Passive and active energy dissipation devices for superior crashworthiness performance

被动和主动能量耗散装置，具有卓越的耐撞性能

• 批准号: RGPIN-2015-04890
• 负责人: Altenhof, William
• 金额: $ 2.48万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=685329
• 关键词: Passive; active; energy; dissipation; devices

The proposed research program will continue experimental, numerical, and theoretical studies towards the development of novel and high performing structural energy absorbing devices. These investigations will seek to understand and develop both passive and active adaptive energy dissipation structures relevant to many safety applications, including but not limited to, personal safety devices and automotive, aerospace, and blast protection industries. Two specific areas of research are targeted towards the development of these adaptive energy dissipation devices, namely, (i) the application of a cutting deformation mode of extrusions towards achieving a system which exhibits desired and controlled load/displacement behaviour during deformation, and (ii) the understanding and development of foam filled braided tubes as a novel energy dissipation device. The long term objectives of this research project are to develop high performance, novel, robust, and effective energy absorbing devices so as to mitigate serious injuries or death as a result of falls, automotive crashes, pedestrian impacts, blasts, or bomb explosions in a broad range of safety applications.****Experimental studies will be conducted under quasi-static, dynamic, and ballistic loading conditions and students will be utilizing state of the art equipment, including but not limited to (i) a unique long stroke quasi-static tension/compression testing machine, (ii) two droptower testing devices, (iii) a custom built pneumatic ballistic impact device, and (iv) traditional quasi-static tension/compression loading machines. Quantification of the deformation characteristics and performance of the energy absorbers will occur through the use of transducers, high speed photography and associated digital image analysis software, as well as optical strain measurement systems (using both traditional and high speed cameras). Numerical models will also be extended from the applicant's previously developed engineering models utilizing traditional Lagrangian finite element formulations as well as Eulerian and smooth particle hydrodynamic technologies. These extended models will be experimentally validated and used to understand deformation behaviour and appropriate strategies for design of the adaptive energy dissipation devices. Theoretical models, previously constructed by the applicant's research team, will be used, modified, and extended into optimization studies for prediction of device performance and enhancement. The combined experimental, numerical, and analytical approaches are expected to result in the development of well-engineered adaptive energy dissipation systems. Support from the proposed research grant will provide assistance to train highly qualified personnel and conduct research in the development of these superior energy dissipation devices.**

拟议的研究计划将继续进行实验、数值和理论研究，以开发新颖的高性能结构能量吸收装置。这些研究将寻求理解和开发与许多安全应用相关的被动和主动自适应能量耗散结构。这些自适应能量耗散装置的开发主要针对个人安全装置以及汽车、航空航天和爆炸防护行业的两个特定领域，即（i）应用挤压件的切割变形模式来实现系统其中在变形过程中表现出所需的和受控的载荷/位移行为，以及（ii）理解和开发泡沫填充编织管作为一种新型的能量耗散装置。该研究项目的长期目标是开发高性能、新颖、坚固且耐用的材料。有效的能量吸收装置，以减轻在广泛的安全应用中因坠落、汽车碰撞、行人碰撞、爆炸或炸弹爆炸而造成的严重伤害或死亡。****实验研究将在准静态下进行， 动态的，和弹道载荷条件，学生将使用最先进的设备，包括但不限于（i）独特的长冲程准静态拉伸/压缩测试机，（ii）两个落塔测试装置，（iii）定制的气动弹道冲击装置，以及（iv）传统的准静态拉伸/压缩加载机，将通过使用传感器、高速摄影和相关的数字图像分析软件来量化能量吸收器的变形特征和性能。作为光学应变测量系统（使用传统和高速相机）也将从申请人先前开发的利用传统拉格朗日有限元公式以及欧拉和光滑粒子流体动力学技术的工程模型进行扩展。这些扩展模型将经过实验验证。申请人的研究团队先前构建的理论模型将用于理解变形行为和设计自适应能量耗散装置的适当策略，该理论模型将被使用、修改并扩展到用于预测装置性能的优化研究。综合实验、数值和分析方法预计将开发出精心设计的自适应能量耗散系统，拟议的研究经费的支持将有助于培训高素质人员并在这些系统的开发中进行研究。卓越的能量耗散装置。**