在Adams/Chassis Leafspring专业模块自动生成钢板弹簧模型的基础上,考虑到该专业模块本质上是针对传统钢板弹簧建模所设计的,同时又存在板簧的端部接触和各片之间的摩擦等关键部分处理粗糙的问题,因此对模型的关键部分进行重新定义从而得到了基于Adams/Chassis Leafspring专业模块基础上的二次开发模型。利用相关试验设备对平衡悬架钢板弹簧实物进行力学特性试验,并将试验测量结果与模型仿真结果进行对比分析,保证了板簧二次开发模型的可靠性。对于平衡悬架钢板弹簧而言,还提出一种计算动刚度的公式并对该公式的定义进行详细的解释。针对板簧二次开发模型进行不同工况下的仿真分析,总结出平衡悬架钢板弹簧所具有的动态特性,为改善整车平顺性提供了理论基础。
Based on the leaf spring modeling built by the professional software Adams/Chassis Leafspring, and considering that the software is specially applied to traditional leaf spring and many key parts such as the end contact and interleaf friction are not defined well. So these key parts of modeling are re-defined to acquire the secondary developed model based on the professional software Adams/Chassis Leafspring. A series of experiments about mechanical properties in leaf spring are conducted by us in our lab, and the reliability of the secondary developed leaf spring modeling is proved through the comparison of test results with model simulation results. Besides, the paper presents a way to calculate dynamic stiffness for the tandem suspension leaf spring and provides explicit explanation about the formula. The dynamic characteristics of the tandem suspension leaf spring is summed up according to the simulation results under different working conditions, which provides theoretical basis for improving vehicle ride performance.
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