弾性薄板に作用する面外圧力分布の同定(<小特集>実験計測技術の新展開)

概要

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In the several engineering fields, the collision between structures and foreign objects involve some difficulties in the numerical treatment because intensity, contact area and the time history of the impact load are not known. Some experimental techniques have been suggested to measure the distributed load by a piezo-electric sensor. However, such a direct measurement often meet with difficulty, because the geometry or rigidity of the contact surface may be altered by attaching the sensors on the surface. In order to overcome the difficulty, this paper deals with estimation of pressure distribution applied to the elastic thin plate using inverse analysis. In the present study, the transmission matrix is introduced which gives linear relation between distributed load and internal strain. The boundary element method is employed to obtain the transmission matrix, and Tikhonov's method is used to stabilize the solutions, which are determined by inverse analysis. A numerical simulation on the circular plate subjected to transverse distributed loading is conducted to demonstrate the effectiveness of the present method.
社団法人日本機械学会の論文
2001-03-25