基于ANSYS分析的节能赛车车架结构轻量化设计

The Lightweight Frame Design of Energy-saving Automobiles Based on ANSYS

以第一代节能赛车车架为研究对象,运用CATIA软件建立其车架三维模型,并运用ANSYS软件对车架结构进行3种不同材料、不同截面尺寸的刚度、强度分析,在有限元分析的基础上,对车架进行改进设计;同时,对改进后的车架进行自由模态分析,获得车架低阶固有频率(前6阶)及振型.分析结果表明,车架避开了与发动机怠速、常用车速下的频率重合,实现了车架的轻量化.

Taking the first generation of energy‐saving vehicles as the research objects ,using the CAT‐IA software to establish the three‐dimensional model of the frame ,this paper analyzed the stiffness and strength of three different kinds of materials with different section dimensions on the basis of ANSYS and FEM to address improved lightweight frame design .Meanwhile ,the low‐order frequency（six orders） and vibration mode were also obtained from the free modal analysis .The results showed that the frame avoided the coincidence frequency with engine idle speed and common speed and thus the automobile lightweight fabrication was realized .