大型罐体运输车结构强度和刚度的有限元分析

FEM Analysis on Structural Strength and Stiffness for Large Tank Trucks

以大型罐体运输车为研究对象,对其进行有限元分析,从而确定该运输车结构的薄弱和危险部位,以便对其进行结构优化改进。首先,利用ANSYS Workbench平台建立大型罐体运输车有限元模型;其次,根据工程实际中的受力和约束情况,为其施加合理约束和载荷;最后求得该大型罐体运输车各个部件的变形和应力情况。计算表明,罐体运输车最大应力点在端部支架处,最大应力值为250MPa,安全系数为2.196,处于安全范围。论文还利用材料力学的知识对罐体的中间横截面所受到的最大应力进行了强度计算,验证了有限元计算的准确性。

This paper discussed the large tank truck. Its structure was optimized by using finite element analysis to determine weak and dangerous parts. First,the finite element model of the large tank truck was built by ANSYS Workbench platform. Secondly,according to the stress and the constraint condition of the tank truck in the engineering practice,reasonable constraints and the loads were applied. Finally,the deformation and stress of the various parts of the large tank truck were obtained. Calculations show that the tank truck maximum stress point at the end of the end bracket,and the maximum stress value is about 250 Mpa and the safety coefficient is 2. 196,which is still in the safe range. Then the maximum stress in the middle cross- section of the tank is checked by using knowledge of the mechanics of materials to verify the accuracy of the finite element method.