Simulation and analysis of explosive welding of large-area 304L/Q235B metal plates by material point method

WANG Yuxin; LI Xiaojie; YANG Guojun; FAN Shuning; WANG Xiaohong; YAN Honghao

doi:10.11883/bzycj-2021-0198

Volume 42 Issue 3

Apr. 2022

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WANG Yuxin, LI Xiaojie, YANG Guojun, FAN Shuning, WANG Xiaohong, YAN Honghao. Simulation and analysis of explosive welding of large-area 304L/Q235B metal plates by material point method[J]. Explosion And Shock Waves, 2022, 42(3): 035301. doi: 10.11883/bzycj-2021-0198

Citation:

WANG Yuxin, LI Xiaojie, YANG Guojun, FAN Shuning, WANG Xiaohong, YAN Honghao. Simulation and analysis of explosive welding of large-area 304L/Q235B metal plates by material point method[J]. Explosion And Shock Waves, 2022, 42(3): 035301. doi: 10.11883/bzycj-2021-0198

Citation:

WANG Yuxin, LI Xiaojie, YANG Guojun, FAN Shuning, WANG Xiaohong, YAN Honghao. Simulation and analysis of explosive welding of large-area 304L/Q235B metal plates by material point method[J]. Explosion And Shock Waves, 2022, 42(3): 035301. doi: 10.11883/bzycj-2021-0198

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Simulation and analysis of explosive welding of large-area 304L/Q235B metal plates by material point method

doi: 10.11883/bzycj-2021-0198

1.
Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, Liaoning, China
2.
Composite Material Plant, Taiyuan Iron and Steel (Group) Co. Ltd., Taiyuan 030003, Shanxi, China

Received Date: 2021-05-18
Accepted Date: 2022-01-26
Rev Recd Date: 2021-06-24

Available Online: 2022-03-21

Publish Date: 2022-04-07

Abstract

Abstract

The explosive welding process of large-area metal plates 304L/Q235B involves explosive detonation, high-speed collision and plastic deformation of two metal plates, etc. If the finite element method is used to simulate this problem, twist or distortion of the elements will lead to a decrease in the calculation accuracy, even negative volume elements will appear, resulting in the termination of the calculation. Moreover, it is difficult to use the finite element method to calculate and simulate the dispersion process of the gas products formed by explosive detonation. In order to simulate the whole process of explosive welding of large-area metal plates and obtain reasonable technical parameters, the material point method is used for three-dimensional numerical simulation analysis. As one of the meshless methods, the material point method mainly uses the explicit integral algorithm in the simulation of impact dynamics problems. By combining the Lagrangian particle elements with the fixed Euler background grid, this method can realize numerical simulations of the high-speed collision of clad and base plates, the explosive sliding detonation and the plastic deformation process of the metal plate surface, and obtain the results of deformation, effective plastic strain and collision velocity between the clad plate and the base plate. The deformation of the composite plate simulated by material point method is basically consistent with the experimental results of explosive welding. The collision velocity between the clad plate and the base plate is an important physical parameter. The relative error between the results of the material point method and Richter formula is less than 13%. Based on the numerical calculation by the material point method and the experimental results, it is shown that the material point method has advantages in numerical accuracy and computational efficiency, and it is also verified that the material point method is an effective numerical method to study metal explosive welding.
- material point method,
- explosive welding,
- large-area metal plates,
- collision velocity between clad plate and base plate

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References(15)

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