【摘要】 简要论述了有限元模态分析基本理论,通过对某轻型客车车身的有限元建模及相应的模态分析计算,得到此车身的固有频率和相应的振型,将计算结果与试验模态相比较,说明了该模型的正确性,且结果有一定的可信度。最后针对发现的问题提出了改进建议。更多还原

【Abstract】 The basic theory of finite element modal analysis is discussed briefly in this paper, and then build properly finite element model of light bus body and calculate the eigenvalue, modal shape. Results are compared with those from experience. At last, some adjust suggest is put forward.更多还原