摘要
针对某型在研车辆在可靠性冲击路试中转向节断裂问题为研究对象,建立了动力学分析模型提取极限工况下的载荷,同时针对断裂的转向节建立有限元分析模型,基于有限元模型和提取的载荷情况,分析其可靠性试验中经常遇到的制动、转向、垂直冲击工况下的结构强度,得到试验车辆开裂问题的原因,并提出结构优化措施,通过理论分析和试验验证,明显提高了地板开裂处的强度,有效解决了量产车型断裂的风险,具有一定的指导意义。
Aiming at the problem of steering knuckle fracture in reliability impact road test of a research vehicle, in this paper a dynamic analysis model is established to extract the load under extreme conditions, and establishes a finite element analysis model for the broken steering knuckle. Based on the finite element model and the extracted load, in the paper the braking, steering and vertical impact conditions which are often encountered in reliability tests, are analyzed. Structural strength is the cause of cracking of test vehicle, and structural optimization measures are put forward. Through theoretical analysis and experimental verification, the strength of floor cracking is obviously improved, and the risk of mass production vehicle type cracking is effectively solved, which has certain guiding significance.
引文
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