圧電アクチュエータを用いたアダプティブ有孔板の応力集中緩和機能に関する実験的検証

概要

論文の詳細を見る
Using piezoelectric actuators which have the capability to induce various amounts of strain upon activation, it is possible to reduce stress concentrations under varying external load conditions by distributing them in high stress regions in advance. In this paper, we verify experimentally the relaxation of stress concentrations in an adaptive plate with a circular hole using piezoelectric actuators. The adaptive plate is a simple actuator/substrate system in which the substrate is an acrylic acid resin plate with a circular hole and actuators are PZT piezoelectric ceramics bonded to the plate surfaces around the hole. The optimal voltage calculated to minimize maximum stresses in the substrate subjected to uniaxial tensile load was applied to each piezoelectric actuator. The experimental result of circumferential stress distributions on the circular hole boundary was compared with the numerical one. Both results appeared in agreement and relaxation of stress concentrations in the adaptive plate was verified.
社団法人日本機械学会の論文
1996-11-25