多岐伝達経路を有する機械構造物への伝達経路解析手法の適用

抄録

In a typical mechanical product, it is a general method that identify the deformation mode in which significant improvement target of contributing to the response from the experiments and analysis solution and consider the improvement structure in the way of high rigidity by using a technique such as strain energy method in the conventional design and development. In however the above-mentioned method, it is often a conflicting results with weight saving and cost reduction of development requirements. Transfer path analysis (TPA) using FEM is an effective method of reducing noise and vibration of the automobile with respect to these issues. TPA can reveal that the transfer path from the input to the response of the evaluation point and the contribution of the path and consider the response improvement efficiently. TPA using the FEM was applied to mechanical structure with a variety of transfer paths and evaluated the contribution of the vibration transfer path for the vibration response reduction. Results of this analysis revealed a contribution of the partial structure of a vibration transmission path not found in the conventional technique. In the above results, comparison of analytical solutions revealed the differences between TPA and conventional strain energy method and study of improvement structure based on the contribution results achieved response reduction of evaluation points. There are described that elucidation of the mechanism of vibration response and response reduction, the effectiveness, issues and about the future developments of TPA.