首页 > 最新文献

Volume 1B: 38th Computers and Information in Engineering Conference最新文献

英文 中文
From Model-Driven Architecture and Model-Based Systems Engineering via Formal Concept Analysis to Graph-Based Design Languages and Back: A Scientific Discourse 从模型驱动的体系结构和基于模型的系统工程到形式概念分析再到基于图的设计语言:一个科学的论述
Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-86392
Dominik Schopper, S. Rudolph
Most modern digital approaches to engineering are based on models and their model transformations. Most of these model transformations are mathematically speaking non-bijective mappings — so-called projections — where some information of the original model is lost during the mapping. From a theoretical point of view it is therefore of great interest to exactly examine the properties of these model transformations. In this paper at first the characteristics of a model are briefly explained. Then some of the most common model-based engineering approaches are reviewed and compared regarding their models and model transformations. In this examination the missing existence of an inverse transformation (a so-called text-to-model transformation, T2M) of a typical model transformation (a so-called model-to-text transformation, M2T) is identified. That discovery may well hold the key to the realization of a so-called round-trip engineering. The required existence of the inverse transformation to this round-trip engineering is then generically postulated as having the nature of a pattern recognition problem. For illustration purposes and a better understanding of the interpretation of the inverse transformation as a pattern recognition problem, a case study for the reconstruction of an abstract model from the concrete model is given using CAD-Data of a satellite. Since CAD models belong to geometry, dimensionless geometric moment invariants play a key role in the generic solution of the pattern recognition problem contained in this example.
大多数现代工程数字化方法都是基于模型及其模型转换。从数学上讲,大多数模型转换都是非双射映射——即所谓的投影——在映射过程中,原始模型的一些信息丢失了。因此,从理论的角度来看,准确地检查这些模型转换的性质是非常有趣的。本文首先对模型的特点作了简要说明。然后回顾和比较了一些最常见的基于模型的工程方法的模型和模型转换。在本研究中,发现了典型模型转换(所谓的模型到文本转换,M2T)中缺少的逆转换(所谓的文本到模型转换,T2M)。这一发现很可能是实现所谓的往返工程的关键。这种往返工程所需的逆变换的存在性通常被假定为具有模式识别问题的性质。为了说明和更好地理解将逆变换解释为模式识别问题,本文给出了一个使用卫星CAD-Data从具体模型重建抽象模型的案例研究。由于CAD模型属于几何,无量纲几何矩不变量在本例中包含的模式识别问题的通用解中起着关键作用。
{"title":"From Model-Driven Architecture and Model-Based Systems Engineering via Formal Concept Analysis to Graph-Based Design Languages and Back: A Scientific Discourse","authors":"Dominik Schopper, S. Rudolph","doi":"10.1115/DETC2018-86392","DOIUrl":"https://doi.org/10.1115/DETC2018-86392","url":null,"abstract":"Most modern digital approaches to engineering are based on models and their model transformations. Most of these model transformations are mathematically speaking non-bijective mappings — so-called projections — where some information of the original model is lost during the mapping. From a theoretical point of view it is therefore of great interest to exactly examine the properties of these model transformations. In this paper at first the characteristics of a model are briefly explained. Then some of the most common model-based engineering approaches are reviewed and compared regarding their models and model transformations. In this examination the missing existence of an inverse transformation (a so-called text-to-model transformation, T2M) of a typical model transformation (a so-called model-to-text transformation, M2T) is identified. That discovery may well hold the key to the realization of a so-called round-trip engineering. The required existence of the inverse transformation to this round-trip engineering is then generically postulated as having the nature of a pattern recognition problem. For illustration purposes and a better understanding of the interpretation of the inverse transformation as a pattern recognition problem, a case study for the reconstruction of an abstract model from the concrete model is given using CAD-Data of a satellite. Since CAD models belong to geometry, dimensionless geometric moment invariants play a key role in the generic solution of the pattern recognition problem contained in this example.","PeriodicalId":338721,"journal":{"name":"Volume 1B: 38th Computers and Information in Engineering Conference","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121389922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
An Automatic Interaction Method Using Part Recognition Based on Deep Network for Augmented Reality Assembly Guidance 基于深度网络零件识别的增强现实装配引导自动交互方法
Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-85810
Xuyue Yin, X. Fan, Jiajie Wang, Rui Liu, Qiang Wang
Assembly process of complex electromechanical products can be quite complicated and time consuming because of high quality demands. Aiming at improving the efficiency of the manual assembly process, this paper proposes an automatic interaction method using part recognition for augmented reality (AR) assembly guidance, which improves both the accuracy of part picking and the interaction efficiency of AR guidance system. Taking sample images of similar parts as input and part types as output, a deep neural network model Part R-CNN for part recognition is build based on Faster R-CNN and is further fine-tuned by back propagation. By recognizing the assembly part, the augmented assembly guidance information of the corresponding parts assembly process is triggered in real-time without direct user interaction. Experimental results show that the deep neural network based part recognition method reaches 94% on mean average precision and the average recognition speed is 200ms per image frame. The average speed of AR guidance content triggering is about 20fps. All system performance satisfies the accuracy and real-time requirements of the AR-aided assembly system.
复杂机电产品的装配过程对质量要求很高,是一个非常复杂和耗时的过程。为了提高人工装配过程的效率,提出了一种基于零件识别的增强现实(AR)装配引导自动交互方法,既提高了零件选择的准确性,又提高了AR引导系统的交互效率。以相似零件的样本图像为输入,零件类型为输出,在Faster R-CNN的基础上建立零件识别的深度神经网络模型part R-CNN,并通过反向传播进一步微调。通过对装配零件的识别,实时触发相应零件装配过程的增强装配引导信息,无需用户直接交互。实验结果表明,基于深度神经网络的零件识别方法平均识别精度达到94%,平均识别速度为200ms /帧。AR制导内容触发的平均速度约为20fps。系统各项性能均满足ar辅助装配系统的精度和实时性要求。
{"title":"An Automatic Interaction Method Using Part Recognition Based on Deep Network for Augmented Reality Assembly Guidance","authors":"Xuyue Yin, X. Fan, Jiajie Wang, Rui Liu, Qiang Wang","doi":"10.1115/DETC2018-85810","DOIUrl":"https://doi.org/10.1115/DETC2018-85810","url":null,"abstract":"Assembly process of complex electromechanical products can be quite complicated and time consuming because of high quality demands. Aiming at improving the efficiency of the manual assembly process, this paper proposes an automatic interaction method using part recognition for augmented reality (AR) assembly guidance, which improves both the accuracy of part picking and the interaction efficiency of AR guidance system. Taking sample images of similar parts as input and part types as output, a deep neural network model Part R-CNN for part recognition is build based on Faster R-CNN and is further fine-tuned by back propagation. By recognizing the assembly part, the augmented assembly guidance information of the corresponding parts assembly process is triggered in real-time without direct user interaction. Experimental results show that the deep neural network based part recognition method reaches 94% on mean average precision and the average recognition speed is 200ms per image frame. The average speed of AR guidance content triggering is about 20fps. All system performance satisfies the accuracy and real-time requirements of the AR-aided assembly system.","PeriodicalId":338721,"journal":{"name":"Volume 1B: 38th Computers and Information in Engineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130320888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Method of Emerging Delight Design Based on KANSEI 基于感性的新兴喜悦设计方法
Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-85736
Y. Tanaka, H. Aoyama
With the intensification of international competition and diversification of customer tastes, the concept design and architectural design contributing to the function and products of the appearance shape has become an important issue in product development. Therefore, in addition to the manufacturing technology supported by high quality and high performance, the establishment of delight value-added manufacturing technology is required. In recent years, delight design has been attracting attention to create a design that enhances customer satisfaction. Delight design means a design with attractive quality, in addition to the conventional performance quality and must-be quality. However, attractive quality depends on the quality of the designer. Moreover, it is difficult to define such a concept because it is considered to exist in a state similar to an idea, which means that it is vague and difficult to express. Therefore, in this study, we propose a method of constructing a neural network customer value model that creates a product design from KANSEI using customer KANSEI data. Additionally, we propose a method of constructing a neural network customer evaluation model as the inverse model. The customer evaluation model analyzes the KANSEI of individual customers and creates a delight design, which is more appealing to an individual customer. In this study, this proposed method was applied to the side shape of a car’s body and the shape of a beer cup.
随着国际竞争的加剧和消费者品味的多样化,有助于产品功能和外观造型的概念设计和建筑设计已成为产品开发中的一个重要问题。因此,除了以高品质、高性能为支撑的制造技术外,还需要建立愉悦的增值制造技术。近年来,快乐设计一直备受关注,创造一种能提高顾客满意度的设计。赏心悦目的设计是指除了常规的性能品质和必备品质之外,还具有吸引人品质的设计。然而,吸引人的质量取决于设计师的质量。而且,这种概念很难定义,因为它被认为是以一种类似于观念的状态存在的,这意味着它是模糊的,难以表达。因此,在本研究中,我们提出了一种构建神经网络顾客价值模型的方法,该模型利用顾客的感性感性数据从感性感性中创建产品设计。此外,我们还提出了一种构建神经网络客户评价模型作为逆模型的方法。顾客评价模型分析个体顾客的感性,创造出更能吸引个体顾客的愉悦设计。在本研究中,将该方法应用于汽车车身的侧面形状和啤酒杯的形状。
{"title":"Method of Emerging Delight Design Based on KANSEI","authors":"Y. Tanaka, H. Aoyama","doi":"10.1115/DETC2018-85736","DOIUrl":"https://doi.org/10.1115/DETC2018-85736","url":null,"abstract":"With the intensification of international competition and diversification of customer tastes, the concept design and architectural design contributing to the function and products of the appearance shape has become an important issue in product development. Therefore, in addition to the manufacturing technology supported by high quality and high performance, the establishment of delight value-added manufacturing technology is required. In recent years, delight design has been attracting attention to create a design that enhances customer satisfaction. Delight design means a design with attractive quality, in addition to the conventional performance quality and must-be quality. However, attractive quality depends on the quality of the designer. Moreover, it is difficult to define such a concept because it is considered to exist in a state similar to an idea, which means that it is vague and difficult to express.\u0000 Therefore, in this study, we propose a method of constructing a neural network customer value model that creates a product design from KANSEI using customer KANSEI data. Additionally, we propose a method of constructing a neural network customer evaluation model as the inverse model. The customer evaluation model analyzes the KANSEI of individual customers and creates a delight design, which is more appealing to an individual customer. In this study, this proposed method was applied to the side shape of a car’s body and the shape of a beer cup.","PeriodicalId":338721,"journal":{"name":"Volume 1B: 38th Computers and Information in Engineering Conference","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130393149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrating Intelligence and Knowledge of Human Factors to Facilitate Collaboration in Manufacturing 集成智能和人为因素知识,促进制造协作
Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-85805
Harley Oliff, Y. Liu, Maneesh Kumar, Michael Williams
The implementation of automation has become a common occurrence in recent years, and automated robotic systems are actively used in many manufacturing processes. However, fully automated manufacturing systems are far less common, and human operators remain prevalent. The resulting scenario is one where human and robotic operators work in close proximity, and directly affect the behavior of one another. Conversely to their robotic counterparts, human beings do not share the same level of repeatability or accuracy, and as such can be a source of uncertainty in such processes. Concurrently, the emergence of intelligent manufacturing has presented opportunities for adaptability within robotic control. This work examines relevant human factors and develops a learning model to examine how to utilize this knowledge and provide appropriate adaptability to robotic elements, with the intention of improving collaborative interaction with human colleagues, and optimized performance. The work is supported by an example case-study, which explores the application of such a control system, and its performance in a real-world production scenario.
近年来,自动化的实施已成为一种普遍现象,自动化机器人系统在许多制造过程中得到积极应用。然而,完全自动化的制造系统远不常见,人工操作员仍然普遍存在。由此产生的场景是人类和机器人操作员在近距离工作,并直接影响彼此的行为。与他们的机器人同行相反,人类不具有相同水平的可重复性或准确性,因此可能成为此类过程中不确定性的来源。同时,智能制造的出现为机器人控制的适应性提供了机会。这项工作研究了相关的人为因素,并开发了一个学习模型,以研究如何利用这些知识并为机器人元素提供适当的适应性,旨在改善与人类同事的协作互动,并优化性能。这项工作得到了一个案例研究的支持,该案例研究探讨了这种控制系统的应用,以及它在实际生产场景中的性能。
{"title":"Integrating Intelligence and Knowledge of Human Factors to Facilitate Collaboration in Manufacturing","authors":"Harley Oliff, Y. Liu, Maneesh Kumar, Michael Williams","doi":"10.1115/DETC2018-85805","DOIUrl":"https://doi.org/10.1115/DETC2018-85805","url":null,"abstract":"The implementation of automation has become a common occurrence in recent years, and automated robotic systems are actively used in many manufacturing processes. However, fully automated manufacturing systems are far less common, and human operators remain prevalent. The resulting scenario is one where human and robotic operators work in close proximity, and directly affect the behavior of one another. Conversely to their robotic counterparts, human beings do not share the same level of repeatability or accuracy, and as such can be a source of uncertainty in such processes.\u0000 Concurrently, the emergence of intelligent manufacturing has presented opportunities for adaptability within robotic control. This work examines relevant human factors and develops a learning model to examine how to utilize this knowledge and provide appropriate adaptability to robotic elements, with the intention of improving collaborative interaction with human colleagues, and optimized performance. The work is supported by an example case-study, which explores the application of such a control system, and its performance in a real-world production scenario.","PeriodicalId":338721,"journal":{"name":"Volume 1B: 38th Computers and Information in Engineering Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130512506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Human Face Reconstruction in Biomedical Applications 人脸重建在生物医学中的应用
Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-85971
S. Barone, M. Bordegoni, F. Cucinotta, Serena Graziosi, A. Razionale, F. Sfravara
3D virtual reconstruction of human body parts is nowadays a common practice in many research fields such as the medical one, the manufacturing of customized products or the creation of personal avatar for gaming purpose. The acquisition can be performed with the use of an active stereo system (i.e., laser scanner, structured light sensors) or with the use of a passive image-based approach. While the former represents a consolidated approach in human modeling, the second is still an active research field. Usually, the reconstruction of a body part through a scanning system is expensive and requests to project light on the patient’s body. On the other hand, the image-based approach could use multi-photo technique to reconstruct a real scene and provides some advantages: low equipment costs (only one camera) and rapid acquisition process of the photo set. In this work, the use of the photogrammetry approach for the reconstruction of humans’ face has been investigated as an alternative to active scanning systems. Two different photogrammetric approaches have been tested to verify their potentiality and their sensitivity to configuration parameters. An initial comparison among them has been performed, considering the overall number of points detected (sparse point cloud reconstruction, dense point cloud reconstruction). Besides, to evaluate the accuracy of the reconstruction, a set of measures used in the design of wearable head-related products has been assessed.
人体部位的3D虚拟重建如今在许多研究领域都是一种常见的做法,例如医疗领域,定制产品的制造或为游戏目的创建个人化身。采集可以通过使用主动立体系统(即激光扫描仪、结构光传感器)或使用被动基于图像的方法进行。前者代表了人类建模的统一方法,而后者仍然是一个活跃的研究领域。通常,通过扫描系统重建身体部位是昂贵的,并且需要将光线投射到患者的身体上。另一方面,基于图像的方法可以使用多张照片技术来重建真实场景,并且具有设备成本低(仅一台相机)和照片集获取过程快的优点。在这项工作中,使用摄影测量方法重建人脸作为主动扫描系统的替代方案进行了研究。已经测试了两种不同的摄影测量方法,以验证它们的潜力和它们对配置参数的敏感性。考虑到检测到的点的总数(稀疏点云重建和密集点云重建),对它们进行了初步比较。此外,为了评估重建的准确性,我们还评估了一套用于可穿戴头戴相关产品设计的措施。
{"title":"Human Face Reconstruction in Biomedical Applications","authors":"S. Barone, M. Bordegoni, F. Cucinotta, Serena Graziosi, A. Razionale, F. Sfravara","doi":"10.1115/DETC2018-85971","DOIUrl":"https://doi.org/10.1115/DETC2018-85971","url":null,"abstract":"3D virtual reconstruction of human body parts is nowadays a common practice in many research fields such as the medical one, the manufacturing of customized products or the creation of personal avatar for gaming purpose. The acquisition can be performed with the use of an active stereo system (i.e., laser scanner, structured light sensors) or with the use of a passive image-based approach. While the former represents a consolidated approach in human modeling, the second is still an active research field. Usually, the reconstruction of a body part through a scanning system is expensive and requests to project light on the patient’s body. On the other hand, the image-based approach could use multi-photo technique to reconstruct a real scene and provides some advantages: low equipment costs (only one camera) and rapid acquisition process of the photo set. In this work, the use of the photogrammetry approach for the reconstruction of humans’ face has been investigated as an alternative to active scanning systems. Two different photogrammetric approaches have been tested to verify their potentiality and their sensitivity to configuration parameters. An initial comparison among them has been performed, considering the overall number of points detected (sparse point cloud reconstruction, dense point cloud reconstruction). Besides, to evaluate the accuracy of the reconstruction, a set of measures used in the design of wearable head-related products has been assessed.","PeriodicalId":338721,"journal":{"name":"Volume 1B: 38th Computers and Information in Engineering Conference","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128298287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Human Box Delivering Simulation by Subtask Division 按子任务划分的人箱交付仿真
Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-86195
Paul Owens, Y. Xiang
This study addresses one solution for determining the optimal delivery of a box. The delivering task is divided into five subtasks: lifting, initial transition step, carrying, final transition step, and unloading. Each task is simulated independently with appropriate boundary conditions so that they can be stitched together to render a complete delivering task. Each task is formulated as an optimization problem. The design variables are joint angle profiles. For lifting and carrying tasks, the objective function is the dynamic effort. In contrast, for transition task, the objective function is the combination of dynamic effort and joint angle discomfort. For unloading, it is a reverse process of lifting motion. A viable optimization motion is generated from the simulation results. The joint torque, joint angle, and ground reactive forces are analyzed for the delivering motion which is also empirically validated.
本研究提出了一个解决方案,以确定一个盒子的最佳交付。交付任务分为五个子任务:提升、初始过渡步骤、搬运、最终过渡步骤和卸载。每个任务都在适当的边界条件下独立模拟,以便将它们拼接在一起以呈现完整的交付任务。每个任务都是一个优化问题。设计变量为关节角轮廓。对于起重搬运任务,目标函数是动态力。而对于过渡任务,目标函数是动态力和关节角度不适感的组合。对于卸荷,则是升降运动的反向过程。根据仿真结果生成可行的优化运动。分析了关节扭矩、关节角度和地面反力对传递运动的影响,并进行了经验验证。
{"title":"Human Box Delivering Simulation by Subtask Division","authors":"Paul Owens, Y. Xiang","doi":"10.1115/DETC2018-86195","DOIUrl":"https://doi.org/10.1115/DETC2018-86195","url":null,"abstract":"This study addresses one solution for determining the optimal delivery of a box. The delivering task is divided into five subtasks: lifting, initial transition step, carrying, final transition step, and unloading. Each task is simulated independently with appropriate boundary conditions so that they can be stitched together to render a complete delivering task. Each task is formulated as an optimization problem. The design variables are joint angle profiles. For lifting and carrying tasks, the objective function is the dynamic effort. In contrast, for transition task, the objective function is the combination of dynamic effort and joint angle discomfort. For unloading, it is a reverse process of lifting motion. A viable optimization motion is generated from the simulation results. The joint torque, joint angle, and ground reactive forces are analyzed for the delivering motion which is also empirically validated.","PeriodicalId":338721,"journal":{"name":"Volume 1B: 38th Computers and Information in Engineering Conference","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124916648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulating Hypervelocity Impact and Material Failure in Glass 模拟超高速冲击和玻璃材料破坏
Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-85948
A. Birnbaum, J. Steuben, A. Iliopoulos, J. Michopoulos
Simulating hypervelocity impact introduces a host of complexities due to inherent strain, pressure and strain rate sensitivities. Brittle materials, and glasses in particular, exhibit significant deviations from their respective quasi-static responses, displaying permanent densification, gradual softening, and significant variation in response depending on the degree of material damage. This work seeks to examine the evolution of material failure due to hypervelocity impact of a spherical steel projectile in to a soda-lime target plate over a range of impact velocities via the utilization of a scalable, explicit finite element code, Velodyne, and a high strain rate, brittle material model. It is shown that, by analyzing both the evolutionary instantaneous and accumulated failure behaviors, the resulting performance is profoundly effected by target/projectile geometries, as well as the complex behaviors observed with respect to shock propagation, reflection and interference.
由于固有的应变、压力和应变速率敏感性,模拟超高速撞击引入了许多复杂性。脆性材料,特别是玻璃,表现出与它们各自的准静态响应的显著偏差,表现出永久致密化、逐渐软化和响应的显著变化,这取决于材料损伤的程度。这项工作旨在通过利用可扩展的、明确的有限元程序Velodyne和高应变率、脆性材料模型,研究由于球形钢弹丸在一定冲击速度范围内对钠石灰靶板的超高速冲击而导致的材料失效的演变。通过分析演化瞬时失效行为和累积失效行为,结果表明,目标/弹丸几何形状以及在冲击传播、反射和干涉方面观察到的复杂行为对最终性能有深刻影响。
{"title":"Simulating Hypervelocity Impact and Material Failure in Glass","authors":"A. Birnbaum, J. Steuben, A. Iliopoulos, J. Michopoulos","doi":"10.1115/DETC2018-85948","DOIUrl":"https://doi.org/10.1115/DETC2018-85948","url":null,"abstract":"Simulating hypervelocity impact introduces a host of complexities due to inherent strain, pressure and strain rate sensitivities. Brittle materials, and glasses in particular, exhibit significant deviations from their respective quasi-static responses, displaying permanent densification, gradual softening, and significant variation in response depending on the degree of material damage. This work seeks to examine the evolution of material failure due to hypervelocity impact of a spherical steel projectile in to a soda-lime target plate over a range of impact velocities via the utilization of a scalable, explicit finite element code, Velodyne, and a high strain rate, brittle material model. It is shown that, by analyzing both the evolutionary instantaneous and accumulated failure behaviors, the resulting performance is profoundly effected by target/projectile geometries, as well as the complex behaviors observed with respect to shock propagation, reflection and interference.","PeriodicalId":338721,"journal":{"name":"Volume 1B: 38th Computers and Information in Engineering Conference","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122149399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A Stochastic Approach for Performance Prediction of Aircraft Engine Components Under Manufacturing Uncertainty 制造不确定性下飞机发动机部件性能预测的随机方法
Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-85415
Austin M. McKeand, R. Gorguluarslan, Seung-Kyum Choi
Efficient modeling of uncertainty introduced by the manufacturing process is critical in the design of the components of the aircraft engines. In this study, a stochastic approach is presented to efficiently account for the geometric uncertainty, associated with the manufacturing process, in the accurate performance prediction of aircraft engine components. A semivariogram analysis procedure is proposed in this approach to quantify spatial variability of the uncertain geometric parameters based on the manufactured specimens. Karhunen-Loeve expansion is utilized to create a set of correlated random variables from the uncertainty data obtained by variogram analysis. The detailed model of the component is created accounting for the uncertainties quantified by these correlated random variables. A stochastic upscaling method is then utilized to form a simplified model that can represent this detailed model with high accuracy under uncertainties. Specifically, a parametric model generation process is developed to represent the detailed model using Bezier curves and the uncertainties are upscaled to the parameters of this parametric representation. The modal frequency-based reliability analysis of a turbine blade example is used to demonstrate the efficacy of the proposed approach. The application results show that the proposed method effectively captures the geometric uncertainties introduced by manufacturing while providing accurate predictions under uncertainties.
制造过程中引入的不确定性的有效建模在飞机发动机部件的设计中是至关重要的。在本研究中,提出了一种随机方法来有效地解释与制造过程相关的几何不确定性,以准确预测飞机发动机部件的性能。在此基础上,提出了一种半变异函数分析方法来量化不确定几何参数的空间变异性。利用Karhunen-Loeve展开,从方差分析得到的不确定性数据中生成一组相关随机变量。根据这些相关随机变量量化的不确定性,创建了组件的详细模型。然后利用随机上尺度法形成一个简化模型,该模型可以在不确定情况下高精度地表示该详细模型。具体来说,开发了一个参数化模型生成过程,使用贝塞尔曲线表示详细模型,并将不确定性升级为该参数化表示的参数。基于模态频率的涡轮叶片可靠性分析实例验证了该方法的有效性。应用结果表明,该方法能有效地捕获制造过程中引入的几何不确定性,并在不确定性条件下提供准确的预测。
{"title":"A Stochastic Approach for Performance Prediction of Aircraft Engine Components Under Manufacturing Uncertainty","authors":"Austin M. McKeand, R. Gorguluarslan, Seung-Kyum Choi","doi":"10.1115/DETC2018-85415","DOIUrl":"https://doi.org/10.1115/DETC2018-85415","url":null,"abstract":"Efficient modeling of uncertainty introduced by the manufacturing process is critical in the design of the components of the aircraft engines. In this study, a stochastic approach is presented to efficiently account for the geometric uncertainty, associated with the manufacturing process, in the accurate performance prediction of aircraft engine components. A semivariogram analysis procedure is proposed in this approach to quantify spatial variability of the uncertain geometric parameters based on the manufactured specimens. Karhunen-Loeve expansion is utilized to create a set of correlated random variables from the uncertainty data obtained by variogram analysis. The detailed model of the component is created accounting for the uncertainties quantified by these correlated random variables. A stochastic upscaling method is then utilized to form a simplified model that can represent this detailed model with high accuracy under uncertainties. Specifically, a parametric model generation process is developed to represent the detailed model using Bezier curves and the uncertainties are upscaled to the parameters of this parametric representation. The modal frequency-based reliability analysis of a turbine blade example is used to demonstrate the efficacy of the proposed approach. The application results show that the proposed method effectively captures the geometric uncertainties introduced by manufacturing while providing accurate predictions under uncertainties.","PeriodicalId":338721,"journal":{"name":"Volume 1B: 38th Computers and Information in Engineering Conference","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125681282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Exploring the Design Space Using a Surrogate Model Approach With Digital Human Modeling Simulations 利用代理模型方法探索设计空间与数字人体建模仿真
Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-86323
Salman Ahmed, M. Gawand, Lukman Irshad, H. Demirel
Computational human factors tools are often not fully-integrated during the early phases of product design. Often, conventional ergonomic practices require physical prototypes and human subjects which are costly in terms of finances and time. Ergonomics evaluations executed on physical prototypes has the limitations of increasing the overall rework as more iterations are required to incorporate design changes related to human factors that are found later in the design stage, which affects the overall cost of product development. This paper proposes a design methodology based on Digital Human Modeling (DHM) approach to inform designers about the ergonomics adequacies of products during early stages of design process. This proactive ergonomics approach has the potential to allow designers to identify significant design variables that affect the human performance before full-scale prototypes are built. The design method utilizes a surrogate model that represents human product interaction. Optimizing the surrogate model provides design concepts to optimize human performance. The efficacy of the proposed design method is demonstrated by a cockpit design study.
在产品设计的早期阶段,计算人因工具通常没有完全集成。通常,传统的人体工程学实践需要物理原型和人体受试者,这在财政和时间方面都是昂贵的。在物理原型上执行的人体工程学评估具有增加整体返工的局限性,因为需要更多的迭代来合并与设计阶段后期发现的人为因素相关的设计更改,这影响了产品开发的总体成本。本文提出了一种基于数字人体建模(DHM)方法的设计方法,以便在设计过程的早期阶段告知设计师产品的人体工程学合理性。这种主动的人体工程学方法有可能让设计师在制作全尺寸原型之前确定影响人体性能的重要设计变量。该设计方法利用代表人类产品交互的代理模型。优化代理模型提供了优化人类性能的设计概念。通过座舱设计研究,验证了所提设计方法的有效性。
{"title":"Exploring the Design Space Using a Surrogate Model Approach With Digital Human Modeling Simulations","authors":"Salman Ahmed, M. Gawand, Lukman Irshad, H. Demirel","doi":"10.1115/DETC2018-86323","DOIUrl":"https://doi.org/10.1115/DETC2018-86323","url":null,"abstract":"Computational human factors tools are often not fully-integrated during the early phases of product design. Often, conventional ergonomic practices require physical prototypes and human subjects which are costly in terms of finances and time. Ergonomics evaluations executed on physical prototypes has the limitations of increasing the overall rework as more iterations are required to incorporate design changes related to human factors that are found later in the design stage, which affects the overall cost of product development. This paper proposes a design methodology based on Digital Human Modeling (DHM) approach to inform designers about the ergonomics adequacies of products during early stages of design process. This proactive ergonomics approach has the potential to allow designers to identify significant design variables that affect the human performance before full-scale prototypes are built. The design method utilizes a surrogate model that represents human product interaction. Optimizing the surrogate model provides design concepts to optimize human performance. The efficacy of the proposed design method is demonstrated by a cockpit design study.","PeriodicalId":338721,"journal":{"name":"Volume 1B: 38th Computers and Information in Engineering Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133120531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
期刊
Volume 1B: 38th Computers and Information in Engineering Conference
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1