【摘要】 为提高商用车座椅乘坐舒适性,运用Catia和Hyperworks软件建立座椅的有限元分析模型,对座椅前六阶的模态频率和振型进行了研究,结果表明现有座椅结构模态过低,与发动机怠速及车身其他内饰件形成共振。对局部振型敏感的部位进行了分析,优化了坐垫蛇簧和靠背蛇簧结构并减小部分零件的厚度,使一阶模态频率达到了38.10Hz,较优化之前提升了13.2%,并通过30万次骨架耐久实验表明优化后的座椅具有足够的强度,试验结果证实了优化的有效性及合理性,解决了该商用车座椅共振的问题。更多还原

【Abstract】 In order to improve the riding comfort of commercial vehicle seats,the finite element analysis model of seats is established by CATIA and HyperWorks software. The modal frequency and mode shape of the first six steps of seats are studied. The results show that the structural mode of the existing seats is too low,which resonates with engine idling and other interior parts of the body. The structure of the seat cushion and back coil is optimized and the thickness of some elbows is reduced. The first modal frequency is 38.10 Hz,which is 13.2% higher than that before optimization. The results of 300,000 times skeleton durability tests show that the optimized seat has enough strength. The test results verify the effectiveness and rationality of the results,and solve the quotient Car seat resonance problem.更多还原