...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Engineering Structures >Energy absorption mechanism of axially-varying thickness (AVT) multicell thin-walled structures under out-of-plane loading
【24h】

Energy absorption mechanism of axially-varying thickness (AVT) multicell thin-walled structures under out-of-plane loading

机译：面外载荷下轴向变厚度（AVT）多单元薄壁结构的能量吸收机理

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Multicell columns have becoming increasingly attractive in crashworthiness applications due to their high efficiency of material utilization. Meanwhile, an urgent need exists to develop new structures to achieve the aim of light weight without sacrificing crashworthiness. A novel multicell column with axially-varying thickness (AVT) is proposed in this study. Quasi-static crushing tests were firstly performed experimentally to investigate crushing behaviors. Subsequently, corresponding numerical simulation models were built, validated, and used to conduct a parametric study. Finally, analytical equations for the mean crushing force for AVT multicell columns were derived and used to assess the crashworthiness of multicell columns according to SFE (super folding element) method. The numerical results agreed well with experimental results in terms of deformation mode and crushing forces, and the theoretical predictions were validated by the experimental results. It was concluded that the thickness gradient of AVT multicell columns could effectively reduce the initial peak crushing force while maintaining energy absorption capacity over a long crushing distance. From this perspective, the AVT multicell columns demonstrated competitive advantages over uniform columns as energy absorbers. Moreover, the analytical prediction could be a powerful tool for designing crashworthy structures.
机译：多单元柱由于其材料利用率高而在耐撞性应用中变得越来越有吸引力。同时，迫切需要开发新的结构以实现轻量化而不牺牲耐撞性的目的。在这项研究中提出了一种新型的具有轴向变化厚度（AVT）的多室色谱柱。首先通过实验进行准静态破碎测试以研究破碎行为。随后，建立，验证了相应的数值模拟模型，并将其用于进行参数研究。最后，推导了AVT多单元柱平均挤压力的解析方程，并根据SFE（超级折叠元件）方法评估了多单元柱的耐撞性。数值结果在变形模式和压溃力方面与实验结果吻合良好，理论结果得到了理论验证。结论是，AVT多室色谱柱的厚度梯度可以有效降低初始峰值破碎力，同时在较长的破碎距离内保持能量吸收能力。从这个角度来看，AVT多室色谱柱显示出优于均质柱作为能量吸收器的竞争优势。此外，分析预测可能是设计防撞结构的有力工具。

著录项

  • 来源
    《Engineering Structures》 |2019年第1期|109130.1-109130.17|共17页
  • 作者

    Pang Tong; Zheng Gang; Fang Jianguang; Ruan Dong; Sun Guangyong;

  • 作者单位

    Hunan Univ, State Key Lab Adv Design & Manufacture Vehicle Bo, Changsha 410082, Hunan, Peoples R China|Swinburne Univ Technol, Fac Sci Engn & Technol, Hawthorn, Vic 3122, Australia;

    Hunan Univ, State Key Lab Adv Design & Manufacture Vehicle Bo, Changsha 410082, Hunan, Peoples R China;

    Hunan Univ, State Key Lab Adv Design & Manufacture Vehicle Bo, Changsha 410082, Hunan, Peoples R China;

    Swinburne Univ Technol, Fac Sci Engn & Technol, Hawthorn, Vic 3122, Australia;

    Hunan Univ, State Key Lab Adv Design & Manufacture Vehicle Bo, Changsha 410082, Hunan, Peoples R China|Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Shaanxi, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Multicell; Axially-varying thickness; Crashworthiness; Energy absorption; Axial crushing;

    机译：多蛋白;轴向不同的厚度;持续;能量吸收;轴压;

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