CAJ | 학술논문

以焊接薄板动力学模型修正为目的，通过建立参数法修正模型，对含焊缝悬臂薄板动力学模型进行了修正。将焊缝用连续实体单元建模，焊缝部位的密度和弹性模量作为修正变量，以有限元数值解与模态振动测试结果误差最小化为优化目标，通过数值迭代运算，得到了模型修正参数的最优化解。结果证明模型修正精度较高，可有效降低焊接结构件有限元模型复杂度。
이한접박판동역학모형수정위목적，통과건립삼수법수정모형，대함한봉현비박판동역학모형진행료수정。장한봉용련속실체단원건모，한봉부위적밀도화탄성모량작위수정변량，이유한원수치해여모태진동측시결과오차최소화위우화목표，통과수치질대운산，득도료모형수정삼수적최우화해。결과증명모형수정정도교고，가유효강저한접결구건유한원모형복잡도。
For the purpose of update of the dynamic model of the welding thin plate ,a dynamic model up-date technique is carried out ,which is based on the modal analysis test result about a thin welding canti-lever plate.The weld joint is modeled with continuous solid element and two variables are introduced:density and elasticity modulus parameters of material , an optimizing model is constructed for the model update question ,and solved by iterative algorithm .The optimal solution includes material density and e-lasticity modulus of the weld area .The technique is proved to be convenient and effective;the study is valuable for the issue of the dynamic model update of the welding structure in application and reduces the complex of modeling .