Low-velocity impact of multilayer sandwich beams with metal foam cores: Analytical, experimental, and numerical investigations
Low-velocity impact of multilayer sandwich beams with metal foam cores: Analytical, experimental, and numerical investigations
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DOI：
10.1177/1099636218759827
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发表时间：
2020-03
影响因子：
3.9
通讯作者：
Jianxun Zhang;Q. Qin;Shangjun Chen;Yan Yang;Y. Ye;Chunping Xiang;TJ Wang
中科院分区：
文献类型：
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作者：
Jianxun Zhang;Q. Qin;Shangjun Chen;Yan Yang;Y. Ye;Chunping Xiang;TJ Wang
本文采用解析、实验和数值计算相结合的方法，研究了具有泡沫金属芯材的完全固支多层夹层梁受重物撞击时的低速冲击响应。采用拟静力法，推导了完全固支多层夹层梁的动力响应解析解，其中考虑了大挠度引起的弯曲和拉伸的相互作用。考虑了局部凹陷和芯部强度对整体弯曲的影响。通过低速碰撞实验和数值计算验证了分析模型的正确性。本分析模型合理地捕捉实验和数值结果。结果表明，多层夹层梁的能量吸收随夹层系数的减小和芯层强度的增大而增大。
This paper uses the analytical, experimental and numerical methods to investigate the low-velocity impact response of fully clamped multilayer sandwich beams with metal foam cores struck by a heavy mass. Using the quasi-static method, analytical solutions for dynamic response of the fully clamped multilayer sandwich beams are derived including the interaction between bending and stretching induced by large deflections. Effects of local denting and core strength on the overall bending are considered. The low-velocity impact experiments and numerical calculations are carried out to validate the analytical model. The present analytical model captures experimental and numerical results reasonably. It is shown that the energy absorption of multilayer sandwich beams increases with decrease of multilayer factor and increase of the core strength.