724 形状記憶合金素子の超弾性有限変形挙動の有限要素解析

概要

論文の詳細を見る
Shape memory alloys (SMA) exhibit superelastic behaviors and shape memory effects accompanied by austenite and martensite transformations. With these characteristic material behaviors, the use of shape memory alloys has been growing in recent years. A newly developed computational tool is necessary to design SMA-based devices. In this paper, Brinson's one-dimensional constitutive modeling for SMA is extended to take into account the asymmetric stress-strain behavior, twisting behavior and large deformation and applied to the finite element analysis. The superelastic behavior of a supported beam under four-point bending is analyzed and the result is compared with the experimental result. A helical spring used in SMA actuators is analyzed with extended constitutive modeling for SMA.
一般社団法人日本機械学会の論文