车架刚度及模态的有限元分析与优化

【摘要】 建立某概念设计阶段的车架有限元模型 ,利用工程分析软件 ANSYS6.1计算出其前五阶固有频率、振型及弯曲和扭转刚度 ;以总质量为目标 ,在动静刚度许可的范围内对其纵横梁的截面尺寸进行优化设计更多还原

【Abstract】 In this paper, a finite element model of a frame, which is on the phase of conceptual design, is established using the software ANSYS6 1 The primary five natural frequencies and corresponding modal shapes as well as the static bending and torsional stiffness are calculated Aiming at the minimum total mass, the section dimension of the longitudinal and cross girders of the frame are optimized in the allowable range of static and dynamic stiffness更多还原