汽车仪表板异响仿真优化及试验研究

为在产品开发前期识别出某SUV仪表板的异响风险,利用仿真方法对其进行典型路谱下的频率响应分析,采用E-line法计算仪表板总成相邻部件之间的相对位移,结合部件间的间隙尺寸信息识别潜在的敲击异响风险点,并且计算风险率.总结导致相对位移较大的原因,结合工程经验及设计要求考虑方案的可实施性,提出控制异响的优化方案.仿真计算结...

Numerical Optimization and Experimental Study on the Rattle of an Automobile Instrument Panel

To identify the risk region of rattle of a SUV instrument panel during vehicle preliminary design stage,finite element method is adopted to analyze the frequency response under typical road spectrum condition.The relative displacement along a gap between two adjacent components is calculated applying the E-line method.Combined with DTS data,risk areas are identified and risk rates are calculated.The cause of relative displacement is also summarized.Then,considering engineering experience,design requirements and feasibility,an optimization scheme to control the rattle is proposed.The results of simulation show that the optimization scheme can effectively control the rattle.The full-vehicle four-poster S&R subjective test is conducted under road spectrum condition and the(S&R)effectiveness of the E-line method is verified.