残留応力の解放を考慮した複合材料の損傷進展解析手法に関する研究

Numerical Analysis of Damage Development for Composites Considering an effect of release of residual stress

ＦＲＰ積層材に発生する損傷の支配的因子であるトランスバースき裂を定量的に評価するため, 損傷力学に基づき,き裂発生時の残留応力解放を考慮した有限要素解析手法を新たに開発し, これによりトランスバースき裂密度と積層構成の関係を検討した．

In FRP laminates the most dominant factor of damage is transverse crack. To evaluate transverse crack quantitatively, we have developed the numerical simulation program of damage development by Finite element method based on Damage mechanics, considering an effect of release of residual stress after damage occurrence. Additionally the relationship between transverse crack density and stucking sequence have been investigated by the proposing method.