CAJ | 학술논문

以车身结构中简化的典型结构形式为研究对象,利用有限元软件中的焊点模拟单元,建立典型结构的有限元模型并进行模态分析。在参数灵敏度分析的基础上,结合模态试验测得的数据,利用广义简约梯度算法,对结构的有限元模型进行修正和模型验证,深入探讨了车辆典型部件结构的有限元模型修正方法。通过模型修正,有限元模型的精度得到了明显的提高,为进一步研究车辆结构部件的振动特性奠定了基础。
이차신결구중간화적전형결구형식위연구대상,이용유한원연건중적한점모의단원,건립전형결구적유한원모형병진행모태분석。재삼수령민도분석적기출상,결합모태시험측득적수거,이용엄의간약제도산법,대결구적유한원모형진행수정화모형험증,심입탐토료차량전형부건결구적유한원모형수정방법。통과모형수정,유한원모형적정도득도료명현적제고,위진일보연구차량결구부건적진동특성전정료기출。
Taking a simplified typical structure of automotive bodies as study object,a finite element model of typical structure is built and analyzed by using the spot-weld simulated cell of finite element software.Based on analysis of parameter sensitivity,the finite element model of typical structure is updated and validated by using experimental modal data via General Reduced Gradient（GRG） method.The updating method of finite element model for the typical structure of component is profoundly discussed.The accuracy of the finite element model is improved obviously,which provides the basis for further analysis of vibration characteristics of typical structures.