Composite materials are becoming more and more popular in automotive industry since classical materials are, in general, expensive and deficient. This paper presents a study on how metals, used in the construction of car doors, can be successfully replaced by composite materials. The vibration behavior of a car door, made of composite materials, is studied and, since the rigidity of this component is low, a solution is proposed in which the structure is stiffened. The modal analysis and finite element method are used to identify the eigenfrequencies and eigenmodes for this structure.

中文翻译：

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汽车工业用复合材料结构研究

复合材料在汽车工业中越来越受欢迎，因为传统材料通常价格昂贵且缺乏。本文研究了如何用复合材料成功替代用于制造车门的金属。研究了由复合材料制成的车门的振动行为，由于该部件的刚度较低，因此提出了一种加强结构的解决方案。模态分析和有限元方法用于识别该结构的特征频率和特征模态。