FRP積層板のき裂損傷発達過程の損傷力学的定式化 : 第1報, き裂発生層の構成式の定式化

概要

論文の詳細を見る
Matrix cracking evolution in composite laminates is formulated in the framework of the continuum damage mechanics. In this paper, the damage evolution of a cracking layer is exclusively focused on. We propose a new concept that a cracked lamina is replaced by an equivalent uniform worksoftening layer, and the analytical method of plasticity is introduced to describe the behavior of the work-softening layer. The most important element of this model is a definition of work-softening modulus which is concerned with the damage evolution law. The elastic analysis proposed by Hashin is shown to be available for formulation of the damage evolution law, and it is also shown that adoption of the cracking layer energy release rate as a cracking criterion leads to a reasonable damage evolution law. The model formulated in this paper can be used for general composite laminates.
一般社団法人日本機械学会の論文
1998-06-25