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Dynamic energy absorption behavior of lattice material filled with shear thickening fluid
Wu XQ(吴先前); Yin QY(殷秋运); Huang CG(黄晨光); Zhong FC
会议录名称X INTERNATIONAL CONFERENCE ON STRUCTURAL DYNAMICS (EURODYN 2017)
2017
会议名称10th International Conference on Structural Dynamics (EURODYN)
会议日期SEP 10-13, 2017
会议地点Sapienza Univ Rome, Fac Civil & Ind Engn, Rome, ITALY
摘要In the present research the dynamic energy absorption behavior of lattice material filled with shear thickening fluid (STF) is studied by the modified split Hopkinson pressure bar (SHPB) apparatus. The nominal engineering stresses versus strain curves are measured to analyze the dynamic energy absorption behavior of the combined material. The dynamic behavior of lattice material is also measured as a comparison. The results show the dynamic strength of the lattice material is about 3 MPa, which is a little higher than the static strength of about 2.3 MPa because of the inertial effect during impact. However, when filled with STF, the combined material shows extraordinary energy absorption behavior when compared to the empty lattice material. The stress of the lattice material filled with STF increase almost linearly to about 9 MPa and then increases slowly with the increase of strain. The excellent energy absorption behavior of the lattice material filled with STF could be explained by the interaction between the lattice cores and the STF during compression. For the lattice material, while some of cores buckling, it will lose the load capacity. While filled with STF, if the initial buckling of some of the lattice cores happens during impact, the strong lateral drag force is generated by the ambient STF due to the fast lateral velocities of the cores, leading to the great increase of its dynamic energy absorption behavior. (C) 2017 The Authors. Published by Elsevier Ltd.
关键词Dynamic Energy Absorption Behavior Lattice Material Shear Thickening Fluid Split Hopkinson Pressure Bar
WOS记录号WOS:000422868902109
资助信息The paper was supported by National Natural Science Foundation of China under Grant Nos. 11332011, 11402277.
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收录类别CPCI-S ; EI
语种英语
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文献类型会议论文
条目标识符http://dspace.imech.ac.cn/handle/311007/75560
专题流固耦合系统力学重点实验室
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GB/T 7714
Wu XQ,Yin QY,Huang CG,et al. Dynamic energy absorption behavior of lattice material filled with shear thickening fluid[C],2017.
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