102 実験 SEA モデルの信頼性評価

概要

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Statistical Energy Analysis (SEA) is a strong tool for analyzing the nose and vibration characteristics in middle and high frequency ranges. The experimental SEA (ESEA) can be utilized to analyze the response in case that the system exists. In ESEA, the SEA parameters are determined by measuring the power input and the subsystem energies experimentally. To evaluate the subsystem energies, the mean values of the velocity levels at several locations on a subsystem are considered. However, the consideration of the variance in energy estimation is required. This paper describes a new formulation for the variance of experimentally determined SEA parameters in order to enable to evaluate the relability of the constructed ESEA models. The formulations are applied to estimate the confidence intervals of SEA parameters of three kinds of structures.
社団法人日本機械学会の論文
2002-09-13