钢板弹簧有限元辅助设计

Finite Element Assisted Design for Leaf Spring

钢板弹簧被广泛应用在货车悬架上,传统计算方法应用简化计算公式对模型进行简化,能近似地反映钢板弹簧的工作特性和应力。随着有限元仿真技术的发展,精确计算钢板弹簧的工作特性和应力分布已经不再困难。对刚板弹簧的设计进行了改进,采用传统的计算方法进行初步设计验证,采用有限元方法进行分析和修正,改进钢板弹簧弧形,优化钢板弹簧结构,提升钢板弹簧特性,提高了材料的利用率。采用壳单元对少片变截面板簧进行分析,并解决了分析中出现的自然振荡,使仿真简单可靠。

Leaf spring as one of the elastic elements, has simple structure, and can transmit torque in several directions. It is widely used in the suspension of trucks. Traditional calculation method applies simplified calculation formula to simplify the model, and can approximately reflect the work performance and stress of leaf spring. With the development of finite element simulation technique, it is not hard any longer to accurately calculate the work performance and stress distribution of leaf spring. We made some innovation to the design of leaf spring. In the design, traditional calculation method is used for preliminary design proof, and finite element is used for analysis and modification, to improve the arc of leaf spring, optimize its structure, improve its performance and the utilization rate of the material. Shell element is used to analyze few-disc section-changing leaf spring, natural oscillation appeared in analysis is solved and so the simulation is simple and reliable.