404 損傷力学に基づく圧電セラミックスの疲労損傷発展式の定式化

概要

論文の詳細を見る
Damage in piezoelectric ceramics under mechanical and electrical cyclic loading is represented by a damage variable based on the continuum damage mechanics, and an evolution equation of the damage variable is formulated by taking into account the effect of applied electric field on a fatigue life. In addition, the damage variable is incorporated into a constitutive equation of piezoelectric ceramics by using the modified cubes model; i.e. material constants of the constitutive equation are expressed as a material function of the damage variable. Then, the damage evolution equation and the constitutive equation are applied to a prediction of a fatigue life. Results of the prediction are compared with experimental results, and the validity of formulating the damage evolution equation and the constitutive equation is disussed.
社団法人日本機械学会の論文
2002-09-20