Virtual and Physical Prototyping最新文献

英文中文

Inverse design of adaptive flexible structures using physical-enhanced neural network. 基于物理增强神经网络的自适应柔性结构反设计。

IF 8.8 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Virtual and Physical Prototyping

Pub Date : 2025-07-18 eCollection Date: 2025-01-01 DOI: 10.1080/17452759.2025.2530732

Moslem Mohammadi, Abbas Z Kouzani, Mahdi Bodaghi, Ali Zolfagharian

Traditional design and analysis of mechanical metamaterials are complex and time-consuming, owing to their nonlinear characteristics. This paper proposes a computationally efficient inverse design framework to predict the nonlinear strain-stress response considering the buckling behaviour under a tensile load. Design and simulation processes of the structures are based on the reduced order model (ROM) of flexible structures, all within a single software environment, MATLAB/Simscape, using the flexible beam blocks. The physical-enhanced neural network (PENN) design is implemented in MATLAB, utilising the results of the ROM model for training and testing. The ROM model takes 4.5 min on average on a 12-core CPU, whereas the trained PENN predicts the stiffness curve in a fraction of a second on a single-core CPU. After training the model, it was utilised to inverse design the metamaterial structure based on a desired stiffness response. Evolutionary optimisation is employed to iteratively feed various structural parameters into the model to find the optimised parameters of a metamaterial structure that can achieve the desired strain-stress response. The proposed metamaterial structure was experimentally validated through three-dimensional (3D) printing using flexible thermoplastic polyurethane (TPU) filament, demonstrating the efficiency and effectiveness of the proposed methodology.

由于机械超材料的非线性特性，传统的设计和分析既复杂又耗时。本文提出了一种计算效率高的反设计框架来预测在拉载下考虑屈曲行为的非线性应变-应力响应。结构的设计和仿真过程基于柔性结构的降阶模型（ROM），全部在单一软件环境MATLAB/Simscape中使用柔性梁块进行。物理增强神经网络（PENN）设计在MATLAB中实现，利用ROM模型的结果进行训练和测试。ROM模型在12核CPU上平均需要4.5分钟，而经过训练的PENN在单核CPU上只需几分之一秒就能预测刚度曲线。对模型进行训练后，根据期望的刚度响应对超材料结构进行反设计。采用进化优化方法，迭代地将各种结构参数输入到模型中，以找到能够实现期望应变-应力响应的超材料结构的优化参数。通过使用柔性热塑性聚氨酯（TPU）长丝进行三维（3D）打印实验验证了所提出的超材料结构，证明了所提出方法的效率和有效性。

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引用次数: 0

Microstructure and properties of underwater in-situ wire-based laser additive manufactured duplex stainless steel 水下原位线材激光增材制造双相不锈钢的微观结构和性能

IF 10.6 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Virtual and Physical Prototyping

Pub Date : 2024-12-31 DOI: 10.1080/17452759.2024.2401925

Congwei Li, Jialei Zhu, Caimei Wang, Caiyan Deng, Lei Cui, Xiaochun Zhang, Chenglu Zhao, Xiangdong Jiao

A novel underwater in-situ wire-based laser additive manufacturing (ULAM) technology is proposed for the in-service repair of underwater components in nuclear power plant. Duplex stainless steel (DSS) obtained in air and underwater environments were analysed using material characterisation and testing methods. The effects of underwater additive environments on the microstructure evolution, mechanical properties and corrosion resistance of the specimens were investigated. The results show that the laser heat input is consumed to balance the heat loss of the water-cooled base material during the underwater laser additive manufacturing process, leading to a reduction in the heat input to the molten pool. Underwater specimen exhibit a two-phase balance, with small ferrite grain boundary angles, resulting in better tensile strength and corrosion resistance. Laser reheat treatment leads to a phase change in microstructure, which can enhance the microhardness and the tensile strength. The ULAM system can meet the requirements of actual engineering for cladding layer.

针对核电站水下部件的在役维修，提出了一种新型水下原位线基激光增材制造（ULAM）技术。使用材料表征和测试方法分析了在空气和水下环境中获得的双相不锈钢（DSS）。研究了水下添加剂环境对试样微观结构演变、机械性能和耐腐蚀性能的影响。结果表明，在水下激光增材制造过程中，激光输入的热量被消耗以平衡水冷母材的热量损失，从而导致熔池输入的热量减少。水下试样表现出两相平衡，铁素体晶界角小，因此抗拉强度和耐腐蚀性更好。激光再热处理会导致微观结构发生相变，从而提高显微硬度和抗拉强度。ULAM 系统可满足实际工程对覆层的要求。

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引用次数: 0

Laser-based directed energy deposition of Monel K-500 and Stellite 6 multi-materials 基于激光的定向能沉积 Monel K-500 和 Stellite 6 复合材料

IF 10.6 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Virtual and Physical Prototyping

Pub Date : 2024-12-31 DOI: 10.1080/17452759.2024.2399789

Ze Chen, Zhongji Sun, Yang Qi, Wei Fan, Verner Soh Qun Liang, Sastry Yagnanna Kandukuri, Paulo Jorge Da Silva Bartolo, Kun Zhou

Laser-based directed energy deposition (L-DED) offers significant advantages for repairing metal structures, particularly in the marine and offshore industry where corrosion-resistant materials like Monel K-500 (a Ni-Cu alloy) lack strength and wear resistance. This study addresses this issue by producing Monel K-500 with high-strength Stellite 6 (a Co-Cr alloy). Two types of multi-material samples were created using L-DED: interlayered and mixed powder samples. The interlayered samples experienced cracking at the material interface, while the mixed powder samples were crack-free and exhibited improved mechanical properties, with yield strength increasing from 208.3 MPa to 490.2 MPa and ultimate tensile strength from 429.7 MPa to 887.0 MPa compared to single Monel K-500 samples. This research demonstrated the potential of in-situ alloying during the L-DED process to enhance alloy properties and highlighted the challenges of abrupt compositional changes leading to cracking, suggesting mitigation strategies for successful production.

激光定向能沉积技术（L-DED）在修复金属结构方面具有显著优势，尤其是在海洋和近海工业领域，因为在这些领域，像 Monel K-500（一种镍铜合金）这样的耐腐蚀材料缺乏强度和耐磨性。本研究通过在 Monel K-500 中加入高强度 Stellite 6（一种 Co-Cr 合金）来解决这一问题。使用 L-DED 制作了两种类型的多材料样品：夹层样品和混合粉末样品。与单一 Monel K-500 样品相比，夹层样品在材料界面处出现了裂纹，而混合粉末样品则没有裂纹，并显示出更好的机械性能，屈服强度从 208.3 兆帕增加到 490.2 兆帕，极限拉伸强度从 429.7 兆帕增加到 887.0 兆帕。这项研究证明了在 L-DED 过程中原位合金化在提高合金性能方面的潜力，并强调了成分突变导致开裂所带来的挑战，提出了成功生产的缓解策略。

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引用次数: 0

Effects of path patterns on residual stresses and deformations of directed energy deposition-arc built blocks 路径模式对定向能沉积弧形构件残余应力和变形的影响

IF 10.6 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Virtual and Physical Prototyping

Pub Date : 2024-12-31 DOI: 10.1080/17452759.2023.2296128

Donghong Ding, Rong Huang, Tao Liu, Lei Yuan, Chuan Liu

Deposition path patterns play an important role in controlling residual stresses and deformation in direct energy deposition-arc (DED-arc) process. In this paper, the effects of various path patterns on the evolution of the temperature history, residual stress distribution, and substrate deformations are investigated through experiments and finite element analysis. The predicted results of temperature fields and substrate deformations are verified experimentally by the infrared thermal imager and the laser profile scanner, respectively. It is found that the path patterns have significant effects on the stress distribution in the first few layers, and the minimum substrate deformation is obtained by the zigzag path along the short edge of the block. The proposed finite element method and measuring method are confirmed to be effective and feasible, providing valuable insight into the residual stresses and deformations control in the DED-arc process.

沉积路径模式在控制直接能量沉积-电弧（DED-arc）工艺中的残余应力和变形方面发挥着重要作用。本文通过实验和有限元分析研究了各种路径模式对温度历史演变、残余应力分布和基底变形的影响。红外热成像仪和激光轮廓扫描仪分别对温度场和基底变形的预测结果进行了实验验证。结果发现，路径模式对前几层的应力分布有显著影响，沿块体短边的之字形路径可获得最小的基底变形。所提出的有限元方法和测量方法被证实是有效和可行的，为 DED 电弧工艺中的残余应力和变形控制提供了有价值的见解。

引用次数: 0

Achieving high strength and ductility in Inconel 718: tailoring grain structure through micron-sized carbide additives in PBF-LB/M additive manufacturing 实现 Inconel 718 的高强度和延展性：在 PBF-LB/M 增材制造中通过微米级碳化物添加剂调整晶粒结构

IF 10.6 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Virtual and Physical Prototyping

Pub Date : 2024-09-11 DOI: 10.1080/17452759.2024.2396064

Konrad Gruber, Wojciech Stopyra, Karol Kobiela, Philipp Kohlwes, Jan Čapek, Efthymios Polatidis, Ingomar Kelbassa

Few attempts have been made so far to develop modifiers for in situ use in Inconel 718 PBF-LB/M fabrication. Reports show an increase in tensile strength compared to unmodified counterparts. Howeve...

迄今为止，很少有人尝试开发改性剂用于 Inconel 718 PBF-LB/M 的原位制造。报告显示，与未改性的同类产品相比，拉伸强度有所提高。然而...

引用次数: 0

Computational and experimental investigation of thermally auxetic multi-metal lattice structures produced by laser powder bed fusion 激光粉末床融合产生的热辅助多金属晶格结构的计算和实验研究

IF 10.6 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Virtual and Physical Prototyping

Pub Date : 2024-09-11 DOI: 10.1080/17452759.2024.2396069

Ondřej Červinek, Michael Robert Tucker, Daniel Koutný, Markus Bambach

Communication antennas and optical systems of space-borne satellites require highly accurate relative positioning of components despite large variations in ambient temperature. As a potential solut...

尽管环境温度变化很大，但空间搭载卫星的通信天线和光学系统仍需要对元件进行高度精确的相对定位。作为一种潜在的解决方案，...

引用次数: 0

3D Cementitious composites printing with pretreated recycled crumb rubber: mechanical and acoustic insulation properties 用预处理过的再生橡胶屑打印三维水泥基复合材料：机械和隔音性能

IF 10.6 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Virtual and Physical Prototyping

Pub Date : 2024-09-09 DOI: 10.1080/17452759.2024.2399787

Xiangyu Wang, Liangfen Du, Zhenbang Liu, Mingyang Li, Yiwei Weng, Zhixin Liu, Yi Wei Daniel Tay, Zheng Fan, Teck Neng Wong, Ming Jen Tan

Cementitious materials incorporating recycled crumb rubber have become a common sustainable resolution in diverse building environments to achieve various functions in terms of lightweight, ductili...

在各种建筑环境中，含有再生橡胶屑的水泥基材料已成为一种常见的可持续解决方案，可实现轻质、延展性和耐久性等各种功能。

引用次数: 0

Interlayer laser cladding SiC regulates microstructure and mechanical properties of Ti-6Al-4V arc-directed energy deposited components 层间激光熔覆碳化硅可调节 Ti-6Al-4V 电弧定向能沉积部件的微观结构和机械性能

IF 10.6 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Virtual and Physical Prototyping

Pub Date : 2024-09-05 DOI: 10.1080/17452759.2024.2399183

Chao Chen, Wenlong Li, Shupeng Wang

The existing methods for preparing titanium matrix composites (TMCs) are less efficient and more expensive. An interlayer laser cladding SiC during arc-directed energy deposition Ti-6Al-4V was deve...

现有的钛基复合材料（TMC）制备方法效率较低、成本较高。在电弧定向能量沉积 Ti-6Al-4V 的过程中，开发了一种层间激光熔覆碳化硅的方法。

引用次数: 0

Knowledge-based bidirectional thermal variable modelling for directed energy deposition additive manufacturing 基于知识的定向能沉积增材制造双向热变量建模

IF 10.6 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Virtual and Physical Prototyping

Pub Date : 2024-09-05 DOI: 10.1080/17452759.2024.2397008

Jian Qin, Pradeeptta Taraphdar, Yongle Sun, James Wainwright, Wai Jun Lai, Shuo Feng, Jialuo Ding, Stewart Williams

Directed energy deposition additive manufacturing (DED-AM) has gained significant interest in producing large-scale metallic structural components. In this paper, a knowledge-based machine learning...

定向能沉积增材制造（DED-AM）在生产大型金属结构件方面已获得了极大的关注。在本文中，一种基于知识的机器学习...

引用次数: 0

Evaluation of plasticity and determination of deformation index of 3D-printed composite cement-based materials 评估 3D 打印复合水泥基材料的塑性并确定其变形指数

IF 10.6 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Virtual and Physical Prototyping

Pub Date : 2024-09-02 DOI: 10.1080/17452759.2024.2391476

Hongping Zhang, Shuni Duan, Zhichao Hu, Litao Liu, Qi Han

Given the current situation that the evaluation system of the deformation and instability failure of 3DPC is immature, this study was devoted to shaping the performance of 3DPC to provide new ideas...

鉴于目前对 3DPC 变形和失稳失效的评价体系尚不成熟，本研究致力于塑造 3DPC 的性能，以提供新的思路......

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