摘要
根据每一片变截面钢板弹簧在自由状态下的三维尺寸、曲率半径和自由弧高,利用Unigraphics的二次开发功能,建立每一片钢板弹簧的实体模型。在ANSYS软件中,采用映射单元划分法,建立钢板弹簧的有限元模型,并在钢板弹簧的接触面中应用接触理论添加接触单元,模拟板间摩擦和计算钢板弹簧的刚度。对钢板弹簧试验分析结果表明:刚度仿真计算值和试验测量值基本吻合,相对误差为5.58%,说明该模型可以用于研究考虑钢板之间存在摩擦作用力时的变截面钢板弹簧的受力情况,可用于探讨非线性有限元分析过程中接触刚度系数和接触算法收敛的相互匹配关系,以及分析少片变截面钢板弹簧的刚度。
Parametric model of taper leaf spring was constructed by developing program of Unigraphics. Through inputting the parameters such as dimensions, curvature and arc height, a solid model of each leaf spring was constructed automatically and respectively. Using the solid model, FEM model of the taper leaf spring could be constructed by mapped mesh in the software of ANSYS. The friction between leaves was simulated based on contact theory by adding contact elements to the contact surface of each leaf spring, and setting all kinds of relevant parameters, and then the stiffness of taper leaf spring was calculated. Comparing the differences between test result and simulation results, it is found that the simulated calculation results by the program are in good agreement with the field data, the relative error is 5.58% which proves that these models can be used to study the stress on taper leaf spring in case of frictional force. They can be used to study the matching coefficient of contact stiffness with convergence of contact algorithm in nonlinear FEM analysis. In addition, they can be used to analyze stiffness of taper leaf spring.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第3期694-698,共5页
Journal of Central South University:Science and Technology
基金
“985工程”汽车先进设计制造技术科研创新平台资助项目
