汽车车门密封条的设计优化

Design Optimization of Car Door Sealing Strip

研究汽车车门密封条的设计优化。通过调节配方可以优化密封条的压缩永久变形;改变密封条密度、断面结构调节车门关门力,该过程可通过有限元仿真精准优化;控制密封间隙以及增大涂层厚度可有效改善与密封条接触的钣金漆面磨损变色问题;选用摩擦因数较小的涂层材料和内耗能较大的密封条材料可有效降低密封条摩擦异响;整车噪声、振动与声振粗糙度性能可通过控制密封间隙、优化密封条断面及压缩负荷、设置风切音结构等改善;在满足性能要求的前提下,应简化密封条结构设计,以提高产品生产效率和质量稳定性。

The design optimization of car door sealing strips was studied.The compression permanent deformation of the sealing strip could be optimized by adjusting the formulation.Changing the density and cross-sectional structure of the sealing strip could adjust the car door closing force,and this process could be accurately optimized through finite element simulation.Controlling the sealing gap and increasing the coating thickness could effectively improve the problem of the wear and discoloration of the sheet metal paint surface in contact with the sealing strip.The selection of coating materials with lower friction coefficients and sealing strip materials with higher internal friction energy could effectively reduce the friction noise of sealing strips.The noise,vibration,harshness property of the entire vehicle could be improved by controlling the sealing gap,optimizing the sealing strip section and compression load,and setting up wind cutting sound structures.The structure design of the sealing strip should be simplified to improve production efficiency and product quality stability while meeting the performance requirements.