Development of high-performance system of vibration analysis and experimental estimation method of optimal model for large scale nonlinear systems

在节能、节约资源的极限设计等新的技术趋势下，在设计阶段进行振动分析的必要性和重要性进一步增强。因此，对于与实际机器相似的大尺度自由度模型，需要进行高精度的分析。然后，基于约束振型降维的方法，建立了一套适用于各种非线性的实用振动分析系统。

The necessity and importance of the vibration analysis at the design stage increase further more under a recent technological trend such as the limit design for the energy saving and resource saving. Therefore, high-accuracy analysis is required for a large-scale degree of freedom model similar to an actual machine. Then, based on a dimensional reduction method by using the constrained modes, a practical system of vibration analysis applicable to various nonlinearities was developed.