• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of crashworthiness >Thin-walled curved hexagonal beams in crashes - FEA and design
【24h】

Thin-walled curved hexagonal beams in crashes - FEA and design

机译：碰撞中的薄壁弯曲六角形梁-有限元分析和设计

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

This paper focuses on the crashworthiness analysis and crash responses of thin-walled curved beams with hexagonal cross sections. An optimal design of hexagonal cross-sectional profile of such curved beams are obtained based on the observations of typical crash responses of a series of thin-walled curved hexagonal beam samples. The optimised curved beam achieves maximum energy-absorption capability. Detailed finite element (FE) models and finite element analysis (FEA) method are employed to investigate the crash behaviour of the curved hexagonal beams and provide the observations for the optimum design. In this design optimisation problem, the specific energy absorption is set as the objective, and the cross-sectional side length and wall thickness are selected as two design variables. The design samples are selected from design space using factorial design method, and the design problem is formulated based on the FEA results of the design samples, by the use of design of experiments method. Afterwards, simplified FE models are developed for the design samples of the curved hexagonal beams and are applied for the same design problem. It is verified that the developed simplified models lead to the same optimal design as the detailed models. A parametric study is also performed to reveal the influences of the selected design variables on the overall structures' crash responses.
机译：本文着重于具有六角形横截面的薄壁弯曲梁的耐撞性分析和碰撞响应。基于对一系列薄壁弯曲六边形梁样本的典型碰撞响应的观察，获得了此类弯曲梁的六边形横截面轮廓的最佳设计。优化的弯曲光束实现了最大的能量吸收能力。详细的有限元（FE）模型和有限元分析（FEA）方法被用来研究六角形弯曲梁的碰撞行为，并为优化设计提供观察依据。在该设计优化问题中，将比能量吸收作为目标，并选择横截面的边长和壁厚作为两个设计变量。使用析因设计方法从设计空间中选择设计样本，并通过实验设计方法，根据设计样本的有限元分析结果提出设计问题。之后，针对弯曲的六边形梁的设计样本开发了简化的有限元模型，并将其应用于相同的设计问题。可以证明，所开发的简化模型可导致与详细模型相同的最佳设计。还进行了参数研究，以揭示所选设计变量对整体结构碰撞响应的影响。

著录项

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