电焊机2018，Vol.48Issue(5)：15-19,5.DOI:10.7512/j.issn.1001-2303.2018.05.03
搅拌摩擦焊刀具承载能力数值模拟
Numerical simulation of tool load bearing capacity in friction stir welding process
摘要
Abstract
In the friction stir welding (FSW) of thick plate or high-strength alloy,tools easily rupture under the high stress and high temperature.Therefore,it is of great significance to analyze the tool load bearing capacity.In this paper,a Fluent fluid-solid coupling model is established to simulate the thermal mechanical process for the FSW process of 9.53 mm thick AA6061 aluminum alloy.The resultant temperature and pressure fields of tool pin are imported into ANSYS model for the structural analysis.The effect of welding speed on the maximum shear force and the safety factor is investigated.It is shown that the tool is the most likely to rupture at the root of tool pin.With the increase of welding speed,the maximum shear force of tool increases,resulting in the decrease in safety factor and load bearing capacity.The simulation results of the model are basically consistent with the experimental data.关键词
搅拌摩擦焊/刀具/横向力/承载能力/FluentKey words
friction stir welding/tool/traverse force/load bearing capacity/Fluent分类
矿业与冶金引用本文复制引用
夏卫生,夏盼盼,杨帅,杨云珍..搅拌摩擦焊刀具承载能力数值模拟[J].电焊机,2018,48(5):15-19,5.基金项目
武汉市应用基础项目(2017010201010125) （2017010201010125）
