期刊论文

Study on Finite Element Model of Metallic Foams under Dynamic Tension

中文

南华大学学报(自然科学版)

1673-0062

2022

36

6

45-50

10.19431/j.cnki.1673-0062.2022.06.008

11902140:国家自然科学基金 2018JJ3425:湖南省自然科学基金项目 18C0449:湖南省教育厅科学基金

本校为第一机构

泡沫金属单轴动态拉伸加载时往往会发生边缘局部破坏的现象,导致有限元模型结果不能准确地反映动态拉伸力学性能,本文基于三维(three dimensional, 3D)Voronoi立方体模型开展了泡沫金属单轴动态拉伸数值仿...展开更多 泡沫金属单轴动态拉伸加载时往往会发生边缘局部破坏的现象,导致有限元模型结果不能准确地反映动态拉伸力学性能,本文基于三维(three dimensional, 3D)Voronoi立方体模型开展了泡沫金属单轴动态拉伸数值仿真实验,采用改变加载路径与边缘胞壁加厚倍数两种方法,有效地避免了高应变率动态拉伸条件下泡沫金属边缘破坏的现象发生,提出了适用于高应变率下泡沫金属动态拉伸力学性能测试的...

The phenomenon of local damage of the edge often occurs when the foam metal is loaded under uniaxial dynamic tension, so that the results of the finite element model can not accurately reflect the dynamic tensile mechanical properties. Based on the three-dimensional(thr...MORE The phenomenon of local damage of the edge often occurs when the foam metal is loaded under uniaxial dynamic tension, so that the results of the finite element model can not accurately reflect the dynamic tensile mechanical properties. Based on the three-dimensional(three dimensional, 3D) Voronoi cube model, the numerica...