| 闭口帽型薄壁梁压溃历程的精确仿真 |
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| 引用本文： | 苏庆,孙凌玉.闭口帽型薄壁梁压溃历程的精确仿真[J].农业机械学报,2007,38(7):137-140. |
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| 作者姓名： | 苏庆 孙凌玉 |
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| 作者单位： | 北京航空航天大学汽车工程系,100083,北京市 |
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| 基金项目： | 北京航空航天大学校科研和教改项目 |
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| 摘 要： | 应用数值仿真方法对车辆抵抗碰撞的典型构件进行了压溃历程研究。对比试验数据,分析了4个关键因素对变形模式和仿真精度的影响,得到闭口单帽型薄壁梁获得稳定压溃模式的参数控制方法。提出了车架前端耐撞构件兼顾吸能最大化与吸能平顺化的两步设计法。
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| 关 键 词： | 薄壁梁 闭口帽型截面 压溃 仿真 |
| 修稿时间： | 2006-01-13 |
Accurate Simulation on Collapse History of Thin-walled Beam with Closed-hat Section |
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| Su Qing,Sun Lingyu.Accurate Simulation on Collapse History of Thin-walled Beam with Closed-hat Section[J].Transactions of the Chinese Society of Agricultural Machinery,2007,38(7):137-140. |
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| Authors: | Su Qing Sun Lingyu |
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| Institution: | Beihang University |
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| Abstract: | The collapse history of a typical impact member in vehicle was studied by numerical simulation technology.Compared with experimental results,four important factors affecting the collapse mode and simulation accuracy of thin-walled beam with closed-hat section were discussed respectively.The parameter adjustment method obtaining regular axial collapse modes was presented.Furthermore,a two-step law was proposed for crashworthiness design of structural component with both maximum and smooth energy absorption performance. |
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| Keywords: | Thin-walled beam Closed-hat section Collapse Simulation |
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