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| Flexible modeling and stiffness analysis of leaf spring based on improved medium plane method |
| 1.School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.School of Traffic Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu 223003, China) |
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Abstract To solve the problems of establishing the leaf spring flexible model slowly and having large stiffness calculation error in ADAMS software, the modeling idea of improved medium plane method was proposed. All main springs were simplified as an equivalent medium plane spring. Considering the horse bolts constraint, the medium plane was divided into many equal strength line segments according to the similar thickness principle. These line segments were simulated by the Beam elements, then the elements parameters were set according to the true character of the leaf spring medium plane. Taking a leaf spring with gradually hanging stiffness as a example, the 3D model was built in CATIA software, then the correlating coordinate values were extracted to establish the flexible model in View module. In the PostProcessor module, the relation of load and deform of leaf spring was drawn, and the calculated stiffness values of the improved and original methods were compared with the experimental value. The result shows that the improved method spring simulation values are very close to the test values and the culculation speed is improved.
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2011, Vol. 32 
