【摘要】 提出了一种利用实验测试的位移自由度模态数据来估算所需要边界点上的转角自由度模态向量数据的方法,并以此对实验数据模型和有限元模型进行模态综合应用,建立整体的半实验模型.通过一个空调器室外机上安装的配管,对其进行实验,估算连接边界点的转角自由度,并应用模态综合法得到配管的MSC.NATRAN模型.综合模型的分析结果显示转角自由度的估算使模态综合的精度有显著提高.更多还原

【Abstract】 A new method about evaluating the rotational degree of freedoms(RDOFs) from the experimental translational degree of freedoms(DOFs) was presented,and then the component mode synthesis(CMS) method with RDOFs was used to create the semi-experimental model.An example was implemented to describe the application of the method in MSC.NATRAN.The results indicate that the estimating method for RDOFs is acceptable.更多还原