CAJ | 학술논문

基于ABAQUS有限元软件建立热力耦合分析模型，利用锥形热源模型对拼焊板激光焊接进行模拟，分析得出拼焊板激光焊接过程中温度场、应力场以及焊后残余应力场的分布规律；基于有限元模型，进行单向拉伸模拟并分析卸载后残余应力变化规律，通过解析模型对焊后拼焊板单向拉伸试件宏观拉伸力进行分析；在不同工艺参数下，结合数值模拟与实验对焊接质量进行研究，得出合理工艺参数范围，为后续分析拼焊板材料性能波动、拼焊板焊接实验及拼焊板自由弯曲回弹控制奠定了基础。
기우ABAQUS유한원연건건립열력우합분석모형，이용추형열원모형대병한판격광한접진행모의，분석득출병한판격광한접과정중온도장、응력장이급한후잔여응력장적분포규률；기우유한원모형，진행단향랍신모의병분석사재후잔여응력변화규률，통과해석모형대한후병한판단향랍신시건굉관랍신력진행분석；재불동공예삼수하，결합수치모의여실험대한접질량진행연구，득출합리공예삼수범위，위후속분석병한판재료성능파동、병한판한접실험급병한판자유만곡회탄공제전정료기출。
The thermal-mechanical coupled finite element model is built based on ABAQUS software . In the finite element model , the welding process for tailor welded blanks (TWBs) is simulated using conical heat source model . The distributions of tempera-ture field ,stress field and the welding residual stress field are obtained by finite element analysis .The residual stress distribution is obtained from uniaxial tensile test simulation . The macroscopic loading force through the analytical model of uniaxial tensile specimen analysis of the welded tailored blanks is obtained . Using different process parameters , the reasonable process parame-ters are determined combining the numerical simulation law and the welding experiment .Current work is a base for subsequent a-nalysis of TWBs material properties fluctuations and TWBs air bending springback control .