| 含孔薄壁方管结构吸能的数值模拟研究 |
| |
| 引用本文： | 卢进帅,刘志芳,王志华,郝文乾.含孔薄壁方管结构吸能的数值模拟研究[J].北京理工大学学报,2014,34(S1):143-146. |
| |
| 作者姓名： | 卢进帅 刘志芳 王志华 郝文乾 |
| |
| 作者单位： | 太原理工大学 应用力学与生物医学工程研究所, 山西, 太原 030024;太原理工大学 应用力学与生物医学工程研究所, 山西, 太原 030024;太原理工大学 应用力学与生物医学工程研究所, 山西, 太原 030024;太原理工大学 应用力学与生物医学工程研究所, 山西, 太原 030024 |
| |
| 基金项目： | 山西省自然科学基金资助项目(2013011005-2) |
| |
| 摘 要： | 针对含孔薄壁方管的力学性能有较大差异的问题,对于不同结构的铝合金薄壁方管,分别进行轴向冲击载荷作用下的有限元数值模拟的动态力学行为研究. 比较了各种薄壁开孔结构的能量吸收性能,及其耐撞性的各种参数,如比吸能(SEA)及平均破坏力、峰值破坏力等. 研究结果表明,与无孔方管对比,开孔方管初始峰值载荷变化很小,但是其比吸能有不同程度的变化. 在本文研究的范围内,开孔位置为L0=0.50L的4方孔方管吸能效果最好.
|
| 关 键 词： | 开孔方管 轴向冲击 数值模拟 吸能 |
| 收稿时间： | 2014/3/23 0:00:00 |
Numerical Simulation on Energy Absorption Properties of Thin-Walled Square Tubes with Cutouts |
| |
| LU Jin-shuai,LIU Zhi-fang,WANG Zhi-hua and HAO Wen-qian.Numerical Simulation on Energy Absorption Properties of Thin-Walled Square Tubes with Cutouts[J].Journal of Beijing Institute of Technology(Natural Science Edition),2014,34(S1):143-146. |
| |
| Authors: | LU Jin-shuai LIU Zhi-fang WANG Zhi-hua and HAO Wen-qian |
| |
| Institution: | Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China;Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China;Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China;Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China |
| |
| Abstract: | The energy absorption properties and the crash-worthiness parameters, such as the specific energy absorption (SEA), the average crushing force, the peak crushing force, and so on, of the same and different structures of thin-walled square tubes with one or several cutouts under the axial impact were numerically studied and compared through the finite element method. The results show that compared with the hollow square tubes without cutout, the peak crushing force of the tubes with cutouts changs slightly, while the SEA fluctuates to a varying degree. Among them, the square hollow tube with L0=0.50L and four square cutouts show the best performance. |
| |
| Keywords: | square tube with cutouts axial impact numerical simulation energy absorption |
|
| 点击此处可从《北京理工大学学报》浏览原始摘要信息 |
| 点击此处可从《北京理工大学学报》下载免费的PDF全文 |
|
