电焊机2024，Vol.54Issue(2)：24-29,6.DOI:10.7512/j.issn.1001-2303.2024.02.04
热循环下铝/钢连续驱动摩擦焊接接头应力应变分析
Stress and Strain Analysis of Aluminum/Steel Continuous Drive Friction Welding Joints Under Thermal Cycling
摘要
Abstract
Using ABAQUS finite element software,a new numerical model of thermal mechanical coupling process of con-tinuously driven friction welded joints was established.The following conclusion is drawn:the cooling and low-temperature insulation processes during the thermal cycle are the stages with the highest thermal stress;The appearance and location of joint necking are in good agreement with the experimental results,and the relative error between the necking location and the actual experiment is 6%.The essence of the necking phenomenon is the plastic deformation caused by the stress exceed-ing the strength limit when the aluminum is Free expansion and shrinkage;The cleavage fracture ring was observed on the tensile fracture surface,and its position and width are highly consistent with the strain concentration area of the simulation results.The numerical model accurately simulates the thermo-force coupling process of continuously driven friction welded joints,which provides strong support for actual production and process optimaztion.关键词
连续驱动摩擦焊接/热循环/热应力/有限元模拟/应力应变场Key words
continuous drive friction welding/thermal cycling/thermal stress/finite element simulation/stress and strain field分类
矿业与冶金引用本文复制引用
张昌青,王烨,史煜,马东东,谷怀壮..热循环下铝/钢连续驱动摩擦焊接接头应力应变分析[J].电焊机,2024,54(2):24-29,6.基金项目
国家自然科学基金(51961025) （51961025）
