数値部分モデルと部分実構造を併用した自動車用ハイブリッド振動シミュレータの開発

概要

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A vibration simulator was utilized to evaluate the dynamic characteristics of a complicated mechanical system, which requires the total structures to be available. However, in the design stage, only one component is generally under consideration to improve the system dynamics. Therefore, it is useful to develop a hybrid vibration simulator using only the ready-made component which is called a real substructure, as if it behaves as in the total system. In this work, a hybrid model is built by the substructure synthesis method using the FE component model which was obtained by numerical analysis using the finite element method without a real structure, and an experimental model which was obtained by experimental modal analysis of the real substructure. This hybrid model was reduced to the degree of freedom of the connecting point, and we determined a few deciding numbers of excitation and excitation location based on the error ratio and by computing the virtual transmitted force. The real substructure was excited by a hybrid vibration simulator for realizing the vibration behavior in a total system with a modified excitation force, which compensated for the electrical and mechanical characteristics of the vibration simulator.
1997-12-25