|
|
The Unloading Characteristics of Metal in During Dynamic Response |
HUANG Yong, PAN Hao, HU Xiaomian |
National Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, China |
|
|
Abstract: The unloading characteristics are studied to explain the difference between the simulation results and the experimental data in this paper. The different elastic-plastic limiting conditions between the loading and the unloading processes are used to describe the quasi-elastic unloading of the earlier unloading. The critical damage model and the Steinberg-Guinan constitutive model are used to simulate the shock-unloading spallation process and the second loading process of Fe and Al. The simulation results indicate that the method used in this paper can describe quasi-elastic phenomena reasonably well. The results of the damage evolution and the spallation compare favorably with the experiment data at the complete spallation. But in the case of Al experiment, the incomplete spallation occurs because of the lower shock velocity, and it can not be described well with the macroscopic damage evolution model, which explains the difference between the simulation results and the experimental data.
|
Received: 27 November 2011
|
|
|
|
|
[1] |
MENG Yangang, JIN Xueke, LU Panpan, WANG Haifu. Lethality Effects of Enhanced PELE of Reactive Materials[J]. journal1, 2014, 32(9): 31-35. |
[2] |
LIN Yi, HUANG Yunyan, SUN Keqin. Explorating Underground Cavity by Rayleigh Surface Wave[J]. Science & Technology Review, 2014, 32(32): 28-31. |
[3] |
YANG Yanguo, WU Qingwei, SHI Yajun, WANG Hongzhao. Calculation on the Height of Water Flowing Fractured Zone in a Coal Mine[J]. journal1, 2014, 32(3): 34-38. |
[4] |
YIN Qixiang, ZHOU Guoqing, WANG Tao, XIA Lijiang, LIU Yuyi. Numerical Simulation of Thermal Field in Permafrost Embankmentbridge Transition Section of Qinghai-tibet Railway Bridge[J]. journal1, 2014, 32(27): 43-48. |
[5] |
HUANG Si, YANG Fuxiang, SU Xianghui. Unsteady Numerical Simulation for Solid-Liquid Two-Phase Flow in Centrifugal Pump by CFD-DEM Coupling[J]. journal1, 2014, 32(27): 28-31. |
[6] |
ZHANG Deping, ZHAO Yao, SHI Xiaohui, LIU Zhenyi. Numerical Simulation of BLEVE Mechanism of Supercritical Carbon Dioxide[J]. journal1, 2014, 32(25): 46-50. |
|
|
|
|