Lightweight active and passive energy dissipation devices for enhanced and adaptable crashworthiness performance

轻质主动和被动能量耗散装置，增强和适应性强的耐撞性能

• 批准号: RGPIN-2020-04334
• 负责人: Altenhof, William
• 金额: $ 2.84万
• 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: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=760481
• 关键词: Lightweight; active; passive; energy; dissipation

The proposed research program will focus on the training of highly qualified personnel to undertake unique experimental, numerical, and theoretical studies towards the development of novel and high performing adaptive structural energy absorbing devices, where the force/displacement response adjusts based upon design or as needed. Both passive and active adaptive energy dissipation structures will be engineered, fabricated, and assessed in order to provide appropriate performance data for application to many relevant fields, including but not limited to, military, aerospace, marine, automotive and personal safety equipment industries. The research team will concentrate efforts on the development of adaptive energy dissipation devices exploiting a cutting mode of deformation to maximize system performance under low and high rate compressive and tensile loading conditions. 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, (1) a unique long stroke and traditional (universal) quasi-static tension/compression testing machines, (2) a droptower impact testing machine, (3) a custom built pneumatic cannon and barrier and (4) a Split Hopkinson Pressure Bar (SHPB) apparatus. Collaborative efforts with researchers at the University of Cape Town (South Africa), will provide the opportunity to test both active and passive energy dissipation systems using a ballistic pendulum. Quantification of the deformation characteristics and performance of the energy absorbers will occur through the use of transducers, high speed photography and digital image analysis software, as well as optical strain measurement systems (using both low and high speed cameras). Training of students in the development of high-quality, verified and validated numerical models will also be a focus of the proposed research. Large deformation, high strain rate finite element models employing both traditional Lagrangian element formulations and non-traditional Eulerian, smooth particle hydrodynamic (SPH), element free Galerkin (EFG) and smoothed particle Galerkin (SPG) formulations will be utilized in the advancement of the applicant's previously developed engineering models for deformation simulation of the proposed structural energy dissipation devices. Analytical models will also be advanced and extended for prediction of device performance and enhancement. 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.

拟议的研究计划将着重于对高素质人员进行培训，以进行独特的实验，数值和理论研究，以开发新颖和高性能的自适应结构吸收器械，其中力/位移响应根据设计或需要根据需要进行调整。被动和主动自适应耗散结构都将进行设计，制造和评估，以便为许多相关领域的应用提供适当的性能数据，包括但不限于军事，航空航天，海洋，海洋，汽车和个人安全设备行业。研究团队将专注于开发自适应能量耗散设备，利用切割模式的变形模式，以在低速和高速率压缩和拉伸载荷条件下最大化系统性能。该研究项目的长期目标是发展高性能，新颖，强大和有效的能量吸收设备，以减轻因跌倒，汽车撞车，行人撞击，爆炸或炸弹爆炸而导致的严重伤害或死亡。 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, (1) a unique long stroke and traditional (universal) quasi-static tension/compression testing machines, (2) a droptower impact testing machine, (3) a custom built pneumatic cannon and barrier and (4) a Split Hopkinson Pressure Bar (SHPB) apparatus.与开普敦大学（南非）的研究人员的合作努力将为使用弹道摆板测试主动和被动耗散系统的机会。通过使用传感器，高速摄影和数字图像分析软件以及光学应变测量系统（使用低速和高速摄像头），将通过使用传感器，高速摄影和数字图像分析软件以及能量吸收器的性能进行定量。培训学生在发展高质量，经过验证和验证的数值模型的培训也将成为拟议研究的重点。 Large deformation, high strain rate finite element models employing both traditional Lagrangian element formulations and non-traditional Eulerian, smooth particle hydrodynamic (SPH), element free Galerkin (EFG) and smoothed particle Galerkin (SPG) formulations will be utilized in the advancement of the applicant's previously developed engineering models for deformation simulation of the proposed structural energy dissipation devices.分析模型还将进行提前并扩展，以预测设备性能和增强功能。拟议的研究赠款的支持将为培训高素质的人员提供帮助，并在开发这些高级耗散设备方面进行研究。