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车身焊装质量的高低,会直接影响到整车的外观质量、性能,进而影响工厂的经济效益。本文讨论了有限元的理论基础及其分析过程,对论文研究过程中用到的软件做出了相关的说明,分析板壳单元特点。介绍了影响汽车覆盖件的型面尺寸精度的因素。分析了覆盖件中成型最难控制机理的回弹现象的产生,并提出了控制方法。覆盖件的有限元和质量分析具有很好的模具设计效率。
Body welding quality level, will directly affect the appearance of the vehicle quality, performance, thereby affecting the economic benefits of the factory. This paper discusses the theoretical foundation of finite element method and its analysis process. The software used in the research of the paper is explained and the characteristics of plate and shell unit are analyzed. The factors influencing the dimensional accuracy of the automobile panel cover are introduced. The springback phenomenon of the most difficult mechanism of forming in the cover is analyzed and the control method is proposed. Finite element and quality analysis of the cover has good mold design efficiency.