金属主簧-复合材料副簧复合刚度计算模型

为了揭示金属主簧-复合材料副簧的变形机理并快速预测其复合刚度,综合应用板弹簧设计理论、复合材料层合板理论及有限差分法建立了金属主簧-复合材料副簧复合刚度的理论计算模型,并编写了相应的MATLAB计算程序。采用ABAQUS软件建立了某金属主簧-复合材料副簧总成的有限元模型并对其刚度特性进行有限元模拟。有限元模拟刚度与理论计算刚度之间的误差低于3%,从而验证了理论计算模型的正确性。建立的理论计算模型不但阐明了金属主簧-复合材料副簧的变形机理,而且适宜编程计算,能准确快速地预测金属主簧-复合材料副簧的复合刚度,这对复合材料板簧的推广应用具有重要意义。

Theoretical Calculation Model of the Composite Stiffness of Leaf Springs With Metal Main Spring and Composite Auxiliary Spring

In order to reveal the deformation mechanism of leaf springs with metal main spring and composite auxiliary spring and predict its composite stiffness quickly,a theoretical calculation model was established by using design theory of leaf spring,composite laminated plate theory and finite difference method.Then the corresponding MATLAB calculation program was written.The finite element model of a leaf spring with a metal main spring and a composite auxiliary spring was established based on the finite element simulation method and its stiffness characteristics were simulated by ABAQUS software.The error between the stiffness values obtained from finite element simulation and the theoretical calculation modal is less than 3%,so the theoretical calculation model is correct.The model not only illustrates the deformation mechanism of leaf springs with metal main spring and composite auxiliary spring,but also suitable for programming,so the model can predict the composite stiffness of leaf springs with metal main spring and composite auxiliary spring accurately and quickly,which is of great significance for promoting the application of composite leaf springs.