金属材料微扰动增长问题的数值模拟研究

潘昊; 吴子辉; 胡晓棉; 杨堃

doi:10.11858/gywlxb.2013.05.020

金属材料微扰动增长问题的数值模拟研究

doi: 10.11858/gywlxb.2013.05.020

潘昊^1,2,
吴子辉¹,
胡晓棉^1,2,
杨堃^1, ,

1.
北京应用物理与计算数学研究所，北京 100094；
2.
北京应用物理与计算数学研究所计算物理国家级重点实验室，北京 100094

详细信息

通讯作者:
杨堃 E-mail:yangkun@iapcm.ac.cn

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出版历程
- 收稿日期: 2011-11-24
- 修回日期: 2012-02-24
- 刊出日期: 2013-10-15

Numerical Study of Metal Perturbation Growth

PAN Hao^1,2,
WU Zi-Hui¹,
HU Xiao-Mian^1,2,
YANG Kun^{1
, ,}

1.
Institute of Applied Physics and Computational Mathematics, Beijing 100094, China;
2.
National Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094, China

摘要

摘要: 金属材料微扰动增长过程包含了材料大变形、高压及高应变率加载等复杂材料动态响应过程。改进了黎曼解光滑粒子法，并采用改进的光滑粒子法结合有限元方法，对不同初始扰动的增长过程进行了数值模拟，计算结果与实验结果符合较好。计算结果表明，在不同初始扰动下，扰动侧部变形的应变率存在明显差异，并且扰动增长过程受屈服强度的影响较大。该方法可以作为研究金属材料微扰动增长过程的数值方法之一。
- 微扰动 /
- 动态本构关系 /
- 数值模拟 /
- 光滑粒子方法
Abstract: The process of metal perturbation growth includes complex material dynamic response like great distortion, high strain rate and high pressure loading, etc. The modified Smoothed Particle Hydrodynamics (SPH) combining with dynamic constitutive behavior of metal wass used to simulate the perturbation growth with different initial amplitude of the perturbation. The influence of shear modulus and yield strength to the perturbation growth was studied. The calculated results indicate the method can also solve the metal perturbation growth problem well.
- perturbation growth /
- dynamic constitutive behavior /
- numerical simulation /
- smoothed particle hydrodynamics

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参考文献(22)

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