• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Dynamic modeling and analysis of vehicle's smart front-end structure for frontal collision improvement.
【24h】

Dynamic modeling and analysis of vehicle's smart front-end structure for frontal collision improvement.

机译：车辆智能前端结构的动态建模和分析，用于改善前部碰撞。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this research, two types of smart front-end structure are proposed to improve vehicle crashworthiness. The first type consists of two non-extendable hydraulic cylinders parallel to the longitudinal members. The second type consists of two extendable hydraulic cylinders integrated with the front-end structure. The literature review shows that little has been done for the development of simplified models for automotive crash problems in general, and smart front-end structures in particular. The development of such models is desirable for use in the initial concept design stage of automotive structures. The work carried out in this research includes developing and analyzing mathematical models of vehicle-to-vehicle and vehicle-to-barrier in different frontal collision events. In these models, vehicle components are modeled by lumped masses and nonlinear springs. Moreover, the hydraulic cylinders are represented by nonlinear dampers elements. Two types of nonlinearity forms, piecewise and cubic, are used to define the characteristics of both nonlinear springs and dampers. In this research, the dynamic responses of the crash events are obtained with the aid of analytical and numerical approaches. Moreover, the intrusion injury and occupant deceleration are used for interpreting the results. It is demonstrated from simulation results that significant improvements to both intrusion and deceleration injuries are obtained using the smart front-end structures. Furthermore, the vehicle compatibility and the crash severity have been significantly minimized.
机译：在这项研究中，提出了两种类型的智能前端结构来提高车辆的耐撞性。第一类由两个与纵向构件平行的不可伸展的液压缸组成。第二种类型包括与前端结构集成在一起的两个可扩展液压缸。文献综述表明，对于一般的汽车碰撞问题，特别是智能前端结构，简化模型的开发工作还很少。这种模型的开发对于在汽车结构的初始概念设计阶段中使用是理想的。这项研究的工作包括开发和分析在不同的正面碰撞事件中车辆对车辆和车辆对障碍的数学模型。在这些模型中，车辆部件通过集总质量和非线性弹簧建模。此外，液压缸由非线性阻尼器元件表示。分段和立方两种非线性形式用于定义非线性弹簧和阻尼器的特性。在这项研究中，借助分析和数值方法获得了碰撞事件的动态响应。此外，入侵伤害和乘员减速度用于解释结果。从仿真结果表明，使用智能前端结构可以显着改善入侵和减速伤害。此外，车辆兼容性和碰撞严重性已大大降低。

著录项

  • 作者

    Elmarakbi, Ahmed.;

  • 作者单位

    University of Toronto (Canada).;

  • 授予单位 University of Toronto (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 Ph.D.
  • 年度 2004
  • 页码 198 p.
  • 总页数 198
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号