期刊
INTERNATIONAL JOURNAL OF PLASTICITY
卷 48, 期 -, 页码 189-204出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijplas.2013.02.013
关键词
Friction stir welding; Smoothed particle hydrodynamics; Lagrangian particle method; Microstructure evolution
资金
- Advanced Scientific Computing Research Program
- Scientific Discovery through Advanced Computing Program of the Office of Science, U.S. Department of Energy at the Pacific Northwest National Laboratory
- Vehicle Technologies Program, DOE Office of Energy Efficiency and Renewable Energy at the Pacific Northwest National Laboratory
- U.S. Department of Energy [DE-AC05-76RL01830]
We present a new smoothed particle hydrodynamics (SPH) model for friction stir welding (FSW). FSW has broad commercial application in the marine, aerospace, rail, and automotive industries. However, development of the FSW process for each new application has remained largely empirical. Few established numerical modeling techniques have been developed that can explain and predict important features of the process physics involved in FSW. This is particularly true in the areas of material flow and mixing mechanisms. In this paper, we present a novel modeling approach to simulate FSW that may have significant advantages over current finite element or finite difference based methods. Unlike traditional grid-based methods, Lagrangian particle methods such as SPH can simulate the dynamics of interfaces, large material deformations, and the material's strain and temperature history without employing complex tracking schemes. Three-dimensional simulations of FSW on AZ31 Mg alloy are performed. The temperature history and distribution, grain size, microhardness as well as the texture evolution are presented. Numerical results are found to be in good agreement with experimental observations. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据