| 子弹长度对SHPB测试影响的有限元模拟 |
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| 引用本文： | 李志强,陈维毅,王志华. 子弹长度对SHPB测试影响的有限元模拟[J]. 科学技术与工程, 2009, 9(5) |
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| 作者姓名： | 李志强 陈维毅 王志华 |
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| 作者单位： | 太原理工大学应用力学与生物医学工程研究所,太原,030024;太原理工大学应用力学与生物医学工程研究所,太原,030024;太原理工大学应用力学与生物医学工程研究所,太原,030024 |
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| 基金项目： | 国家自然科学基金，山西省自然科学基金 |
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| 摘 要： | 基于三维弹塑性有限元模型,采用动态显式算法模拟一系列不同长度子弹以相同速度打击 AL6061-T6铝合金试样的分离式霍普金森压杆(SHPB)实验,得到了试样的应力-应变关系.与实验结果对比,两者吻合较好,验证了SHPB测试原理的合理性.模拟结果表明,子弹长度越长,试样的最大应力和塑性变形越大.
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| 关 键 词： | 分离式霍普金森压杆 子弹长度 三维弹塑性 有限元模型 |
Finite Element Simulation on the Effect of Striker Bar Length on the SHPB Measurements |
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| LI Zhi-qiang,CHEN Wei-yi,WANG Zhi-hua. Finite Element Simulation on the Effect of Striker Bar Length on the SHPB Measurements[J]. Science Technology and Engineering, 2009, 9(5) |
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| Authors: | LI Zhi-qiang CHEN Wei-yi WANG Zhi-hua |
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| Affiliation: | Institute of Applied Mechanics and Biomedical Engineering;Taiyuan University of Technology;Taiyuan 030024;P. R. China |
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| Abstract: | Based on 3D elastic plastic finite element model,split Hopkinson pressure bar (SHPB) experiment on the AL6061-T6 with a series of varying length of striker bar,is simulated under the identical velocity by using dynamic explicit algorithm. The stress-strain response of specimen is obtained. Comparison with the experimental results,computational ones has better agreement,as verifies the measurement principle of SHPB. Simulation results also indicate that the longer the striker bar,the larger maximum stress an... |
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| Keywords: | split Hopkinson pressure bar striker bar length 3D elastic plastic finite element model |
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