CAJ | 학술논문

在某款轿车的概念设计阶段,建立了概念车身结构的几何模型,采集了若干典型的车身梁截面.根据接头的力学特性,利用弹簧单元和刚性梁单元对接头进行了模拟,计算了车身5种典型接头的刚度.求取了概念模型的弯曲刚度、扭转刚度和模态,并与详细设计结果进行对比.结果表明,概念设计计算结果与详细设计的结果基本相近,说明采用所提出的概念设计方法,能够比较准确地预测车身结构的性能.
재모관교차적개념설계계단,건립료개념차신결구적궤하모형,채집료약간전형적차신량절면.근거접두적역학특성,이용탄황단원화강성량단원대접두진행료모의,계산료차신5충전형접두적강도.구취료개념모형적만곡강도、뉴전강도화모태,병여상세설계결과진행대비.결과표명,개념설계계산결과여상세설계적결과기본상근,설명채용소제출적개념설계방법,능구비교준학지예측차신결구적성능.
The geometric model for conceptual car body structure is created in the concept design stage of a car, and several typical beam sections of car body are collected. Joints are modeled by spring and rigid beam ele-ments based on their mechanical properties, and the stiffness of five typical joints are calculated. The bending stiff-ness, torsional stiffness and vibration modes of conceptual model are evaluated and compared to the results of subse-quent detailed design. The results show that the calculated results in concept design stage are basically close to that of detailed design, indicating that the concept design method proposed can rather accurately predict the performance of car body structures.