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Preliminary evaluation of a passive safety device concept for the protection of riders 对保护乘客的被动安全装置概念的初步评估
4区 工程技术 Q3 ENGINEERING, MANUFACTURING Pub Date : 2023-10-27 DOI: 10.1080/13588265.2023.2272306
A. Perticone, D. Barbani, N. Baldanzini
AbstractPowered Two-Wheeler riders are over-represented in crash statistics worldwide, and currently available safety solutions have not triggered a decreasing trend. A new device concept, comprised of a wearable vest with belt stripes sewn on the back and fastened to the motorcycle frame through a metal cable, was developed to save riders’ lives. The objective of this paper is the evaluation of its protective effectiveness in a set of representative crash configurations selected from the ISO 13232 database. The configurations were reproduced in a multibody environment, and each of them was characterised through the following parameters: the impact speeds, contact points, relative heading angle, and the Boolean presence of the safety device. The preliminary evaluation revealed encouraging outcomes as several body regions reported reduced injury indices. However, the benefits depended on the speed range and impact configuration. Overall, the benefits outweighed the additional risks in the selected accident database.Keywords: Restraint devicemotorcycle crashprotective equipmentinjury preventioncrash simulationpassive safety Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingNo private or public fundings were received for this research.
摘要动力两轮车在世界范围内的交通事故统计中占比过高,目前可用的安全解决方案并没有引发减少的趋势。为了挽救骑手的生命,开发了一种新的装置概念,包括一件可穿戴的背心,背心的背面缝有皮带条纹,并通过金属电缆固定在摩托车车架上。本文的目的是从ISO 13232数据库中选择一组具有代表性的崩溃配置来评估其保护有效性。在多体环境中再现了这些构型,并通过以下参数对每种构型进行了表征:冲击速度、接触点、相对航向角和安全装置的布尔存在。初步评估显示了令人鼓舞的结果,因为几个身体区域报告的损伤指数降低了。然而,这些好处取决于速度范围和冲击配置。总的来说,在选定的事故数据库中,收益超过了额外的风险。关键词:约束装置摩托车碰撞防护设备伤害预防碰撞模拟被动安全披露声明作者未报告潜在利益冲突。本研究未收到任何私人或公共资金。
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引用次数: 0
Edgewise compression behaviour of 3D woven honeycomb composites 三维编织蜂窝复合材料的边缘压缩特性
4区 工程技术 Q3 ENGINEERING, MANUFACTURING Pub Date : 2023-10-26 DOI: 10.1080/13588265.2023.2272304
Lekhani Tripathi, Bijoya Kumar Behera
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引用次数: 0
Optimising the tether angle of a head and neck restraint 优化头部和颈部约束绳的角度
4区 工程技术 Q3 ENGINEERING, MANUFACTURING Pub Date : 2023-10-26 DOI: 10.1080/13588265.2023.2272823
Vincent Phibbs Clarke, Cornelis Uys de Jongh
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引用次数: 0
Performance design, development and verification of honeycomb aluminium barrier for vehicle side impact 蜂窝铝汽车侧撞护栏的性能设计、研制与验证
4区 工程技术 Q3 ENGINEERING, MANUFACTURING Pub Date : 2023-10-25 DOI: 10.1080/13588265.2023.2272308
Zhu Haitao, Jialin Yang, Bingxu Duan
SUVs are taken as the research object to develop the side deformation barrier with Chinese characteristics. By extracting characteristic parameters of typical SUVs, honeycomb aluminium barrier and trolley development objectives are defined and theoretical analysis are applied to guide the selection of barrier materials. Based on the dynamic load-cell wall test of barrier trolley, the evaluation method of honeycomb aluminium calibration performance is proposed. Through car-to-car crash test, a new verification method based on the deformation of the body structure and the height distribution of the crash load force is formatted. The results show that the new moving deformation barrier’s mechanical properties meet the design specifications, the prototype is stable in deformation modes and it can characterise the appearance and stiffness characteristics of SUV.
以suv为研究对象,开发具有中国特色的侧面变形屏障。通过提取典型suv的特征参数,确定了蜂窝铝护栏和小车的发展目标,并应用理论分析指导了护栏材料的选择。基于护栏小车的动态荷载箱壁试验,提出了蜂窝铝标定性能的评价方法。通过车对车碰撞试验,形成了一种基于车身结构变形和碰撞载荷力高度分布的验证方法。结果表明,新型移动变形屏障的力学性能满足设计要求,原型在变形模式下稳定,能够表征SUV的外观和刚度特性。
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引用次数: 0
Crashworthiness optimisation design of novel nested structures 新型嵌套结构的耐撞性优化设计
4区 工程技术 Q3 ENGINEERING, MANUFACTURING Pub Date : 2023-10-24 DOI: 10.1080/13588265.2023.2272307
Yonghui Wang, Qiang He, Xiao Chen
AbstractIn order to improve the crashworthiness of the novel circular-vein branched nested tube (CVBNT) proposed in recent research work, the crashworthiness design is optimised in this paper. Based on numerical simulation technology, the finite element model under transverse quasi-static compression of CVBNT is first established and effectively verified. Then, the energy absorption characteristics of CVBNT and different nested tubes were compared and analysed to reveal the excellent energy absorption performance of CVBNT. Finally, the structural design and the cross-sectional thickness optimisation of CVBNT are carried out. The results show that CVBNT has better energy absorption capacity than other nested tubes. The parameters N and γ have an important influence on the crashworthiness of CVBNT, and when N = 6, γ = 0.5 is the best choice in favour of its crashworthiness. At the same time, the optimisation of cross-section thickness effectively improves the crashworthiness of CVBNT.Keywords: Nested structurecrashworthinessenergy absorptionnumerical simulationoptimization design Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research is supported by The National Natural Science Foundation of China (No. 51705215), The Graduate Student Scientific Research Innovation Projects in Jiangsu Province (NO. KYCX21_3444).
摘要为了提高近年来研究提出的新型圆静脉支套管(CVBNT)的耐撞性,对其耐撞性设计进行了优化。基于数值模拟技术,首次建立了CVBNT横向准静态压缩的有限元模型,并进行了有效验证。然后,对比分析了CVBNT和不同嵌套管的吸能特性,揭示了CVBNT优异的吸能性能。最后,进行了CVBNT的结构设计和截面厚度优化。结果表明,CVBNT比其他嵌套管具有更好的吸能能力。参数N和γ对CVBNT的耐撞性有重要影响,当N = 6时,γ = 0.5是有利于CVBNT耐撞性的最佳选择。同时,截面厚度的优化有效地提高了CVBNT的耐撞性。关键词:嵌套结构价值能量吸收数值模拟优化设计披露声明作者未报告潜在利益冲突。项目资助:国家自然科学基金项目(No. 51705215);江苏省研究生科研创新项目(No. 51705215);KYCX21_3444)。
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引用次数: 0
Ductile failure behaviour characterisation of HRT with GISSMO and crashworthiness optimisation design of VRB-HRT 基于GISSMO的HRT延性破坏行为表征及VRB-HRT耐撞性优化设计
4区 工程技术 Q3 ENGINEERING, MANUFACTURING Pub Date : 2023-10-24 DOI: 10.1080/13588265.2023.2272309
Libin Duan, Xiaotong Yang, Wei Xu, Zhanpeng Du, Xing Liu, Lei Shi, Dongkai Xu
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引用次数: 0
Static and dynamic crushing of sandwich tubes with composite skins and three plywood cores (poplar, birch, and oak) 复合外皮和三种胶合板芯(杨木、桦木、橡木)夹心管的静态和动态破碎
4区 工程技术 Q3 ENGINEERING, MANUFACTURING Pub Date : 2023-10-18 DOI: 10.1080/13588265.2023.2270189
Romain Guélou, Florent Eyma, Arthur Cantarel, Samuel Rivallant, Bruno Castanié
AbstractThis paper presents the results of static and dynamic crushing of sandwich tubes with carbon or glass skins and different wood cores. Wood cores were made with poplar, birch, or oak veneer. The core thicknesses of the tubes were equal even if the thicknesses of the species veneers were different for availability reasons. For a tube with a birch core and carbon skins, the Specific Energy Absorption was 50.4 J/g in quasi-static tests and 66.6 J/g in dynamic, and the energy absorbed was 5427 J in quasi-static and 7025 J in dynamic. The birch layers were shown to make a very significant contribution although they were 40 times less expensive than carbon layers. Results from the research work described here show that these materials are appropriate candidates for energy absorption at low carbon emission and with renewable materials.Keywords: Sandwich structurescrushingenergy absorptionpoplaroakbirch AcknowledgementsThe authors thank the French Government for its financial support (MESRI) and the Garnica company for providing I214 veneers for this study.Disclosure statementNo potential conflict of interest was reported by the author(s).
摘要本文介绍了碳皮、玻璃皮和不同木芯夹芯管的静态和动态破碎结果。木芯由杨木、桦木或橡木单板制成。由于可用性的原因,即使种单板的厚度不同,管芯厚度也是相等的。以桦木芯和碳皮为材料的管材,准静态比能吸收为50.4 J/g,动态比能吸收为66.6 J/g,准静态比能吸收为5427 J,动态比能吸收为7025 J。桦树层被证明做出了非常重要的贡献,尽管它们比碳层便宜40倍。本文所述的研究工作结果表明,这些材料是低碳排放和可再生材料吸收能量的合适候选者。作者感谢法国政府的财政支持(MESRI)和Garnica公司为本研究提供了I214块单板。披露声明作者未报告潜在的利益冲突。
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引用次数: 0
Driving choices and behaviours of young male drivers at strategic and tactical levels 青年男性司机在战略和战术层面的驾驶选择和行为
4区 工程技术 Q3 ENGINEERING, MANUFACTURING Pub Date : 2023-10-16 DOI: 10.1080/13588265.2023.2270190
Derya Azık, Türker Özkan
AbstractUnderstanding the common actions of risky drivers could be critical to developing effective countermeasures and improving public health. Pre-trip and on-trip choices might be critical parts behind young male drivers’ aberrant behaviours, which are the main causative driver actions. This study aims to investigate young male drivers’ choices and aberrant driving behaviours. 138 young male (age range 21–30), active drivers participated and completed the Adaptation of Advanced Decisions and Patterns of Travel Scale and the Driver Behaviour Questionnaire. The results indicate that tactical decisions are negatively related to aberrant driving behaviour. Younger drivers who make tactical decisions report fewer errors, lapses, and violations compared to others. The same analyses were conducted for strategic choices, and it is found that strategic choices are generally positively related to aberrant driving behaviours (young drivers with strategic choices report more errors and lapses). Interestingly, while tactical and strategic decisions and practices have mostly been studied for older drivers, the safety benefits of these types of decisions (primarily at the tactical level) may be higher for the younger driver population. Thus, the role of different types of driving decisions and possible disadvantages should be considered before encouraging drivers to adopt these types of strategies.Keywords: Younger driverstactical choicesstrategical choicesaberrant driver behaviours Disclosure statementNo potential conflict of interest was reported by the authors.
摘要了解危险驾驶员的共同行为对于制定有效的对策和改善公共卫生至关重要。出行前选择和出行中选择可能是导致年轻男性驾驶员异常行为的关键因素,是导致年轻男性驾驶员异常行为的主要原因。本研究旨在探讨年轻男性驾驶人的驾驶选择与异常驾驶行为。138名年轻男性(年龄21-30岁)主动驾驶人参与并完成了“先进决策与出行模式适应量表”和“驾驶员行为问卷”。结果表明,战术决策与异常驾驶行为呈负相关。与其他司机相比,做出战术决策的年轻司机报告的错误、失误和违规行为更少。对战略选择进行了同样的分析,发现战略选择通常与异常驾驶行为呈正相关(有战略选择的年轻司机报告更多的错误和失误)。有趣的是,虽然战术和战略决策和实践主要是针对老年司机进行的研究,但这些类型的决策(主要是在战术层面上)对年轻司机群体的安全效益可能更高。因此,在鼓励司机采用这些类型的策略之前,应该考虑不同类型的驾驶决策的作用和可能的缺点。关键词:年轻驾驶员战略选择异常驾驶行为披露声明作者未报告潜在利益冲突。
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引用次数: 0
Design and evaluation of compressive properties of 3D-printed PLA stochastic open-cell foam 3d打印PLA随机开孔泡沫材料抗压性能设计与评价
4区 工程技术 Q3 ENGINEERING, MANUFACTURING Pub Date : 2023-10-09 DOI: 10.1080/13588265.2023.2258638
Abdelghani Khennab, Abdennour Benhizia
AbstractThe deformation characteristics and mechanical behaviour of 3D-printed stochastic open-cell foam structures were experimentally studied under a quasi-static compression test. PLA foam specimens with irregular cell geometry, variable strut sections and prescribed relative density are constructed numerically using the Voronoi diagrams and prepared with fused deposition modelling. The design procedure allows controlling the strut topology easily, which makes the geometrical model suitable for studying the effect of local morphological characteristics on the mechanical performance of open-cell foam material. The effect of different morphological characteristics on the compressive mechanical behaviour of the fabricated PLA foam was examined in detail. Compression experiments prove that the mechanical properties are significantly dependent on the relative density and strut section shape. The main mechanical properties of the 3D-printed PLA foams for different cross-sectional shapes of struts were obtained via the energy-efficient method and expressed with the two common formulas existing in the literature.Keywords: Open-cell foamstochastic3D printingnon-uniform cross-sectionstrut shape effect Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
摘要采用准静态压缩实验研究了3d打印随机开孔泡沫结构的变形特性和力学性能。使用Voronoi图和熔融沉积模型对具有不规则细胞几何形状、可变支柱截面和规定相对密度的PLA泡沫试样进行了数值构建。该设计方法可以方便地控制支撑结构的拓扑结构,使得该几何模型适合于研究局部形态特征对开孔泡沫材料力学性能的影响。研究了不同形态特征对聚乳酸泡沫塑料压缩力学性能的影响。压缩实验证明,相对密度和截面形状对其力学性能有显著影响。采用节能法得到了3d打印PLA泡沫塑料在不同支撑截面形状下的主要力学性能,并用文献中常用的两种公式表示。关键词:开孔泡沫随机3d打印非均匀横截面支柱形状效应披露声明作者声明,他们没有已知的竞争经济利益或个人关系,可能会影响本文所报道的工作。
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引用次数: 0
Aircraft crashworthiness: modelling of fuel inside a conformable tank 飞机耐撞性:油箱内燃油的建模
4区 工程技术 Q3 ENGINEERING, MANUFACTURING Pub Date : 2023-10-08 DOI: 10.1080/13588265.2023.2267714
Saiaf Bin Rayhan, Xue Pu
AbstractWith the aid of modern computing systems and commercial finite element (FE) codes, the expensive and non-repeatable experimental crashworthiness testing of complex fuselage sections can be simulated accurately. However, some key problems associated with the virtual drop tests have yet to be resolved. One such example is the vertical impact test of the fuselage section with an onboard auxiliary fuel tank, which contains a large amount of fuel inside the fuel tank, where an inevitable fluid-structure interaction (FSI) takes place during crashworthiness. Despite this fact, to date, the researchers have adopted mass distribution techniques where fuel modelling is excluded to avoid the FSI and the total mass of the fuel is distributed over the fuel tank surfaces. Therefore, in this present study, an effort is made to evaluate the importance of FSI over mass distribution techniques to model the fuel adopting the FE code Ansys Explicit. Investigated crash outcomes of the fuselage section based on plastic energy dissipation, plastic deformation, and seat track acceleration responses suggest that in the case of mass distribution techniques, the tank body behaves as rigid, which eventually limits the fuel tank from absorbing much less plastic energy compared to FSI. This also leads to a different failure mechanism for the ribs, which are mainly crashing for mass distribution techniques, while plastic hinge failure occurs for FSI. Finally, after a detailed comparison and discussion, it is concluded that the FSI method is more suitable to represent fuel inside an auxiliary fuel tank.Keywords: Fuel modellingFSI methodaircraft crashworthinessvertical drop test AcknowledgmentThis research did not receive any external funding. The authors are grateful to the Chinese Scholarship Council (CSC) for funding Ph.D. education. In addition, the authors are also grateful to the anonymous reviewer whose critical observations helped to improve the overall quality of the manuscript.Disclosure statementNo potential conflict of interest was reported by the authors.
摘要借助现代计算系统和商用有限元程序,可以对昂贵且不可重复的复杂机身截面耐撞性试验进行精确模拟。然而,与虚拟跌落测试相关的一些关键问题尚未得到解决。其中一个例子是对带有机载辅助油箱的机身部分进行垂直冲击试验,油箱内含有大量燃料,在耐撞性过程中不可避免地会发生流固耦合(FSI)。尽管如此,到目前为止,研究人员已经采用了质量分布技术,其中排除了燃料模型以避免FSI,并且燃料的总质量分布在燃料箱表面。因此,在本研究中,采用有限元代码Ansys Explicit来评估FSI相对于质量分布技术的重要性。基于塑性能量耗散、塑性变形和座椅轨道加速度响应的机身部分碰撞结果研究表明,在质量分布技术的情况下,油箱体表现为刚性,这最终限制了油箱吸收的塑性能量比FSI少得多。这也导致肋的破坏机制不同,主要是质量分布技术的破坏,而塑性铰破坏发生在FSI。最后,经过详细的比较和讨论,得出FSI法更适合表示副油箱内燃油的结论。关键词:燃料建模fsi方法飞机耐撞垂直跌落试验确认本研究未获得任何外部资助。作者感谢中国国家留学基金委(CSC)对博士教育的资助。此外,作者也感谢匿名审稿人,他的批评意见有助于提高手稿的整体质量。披露声明作者未报告潜在的利益冲突。
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引用次数: 0
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International Journal of Crashworthiness
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