Analysis of the Strain Energy Release Rate for a Delamination Crack in a Multilayered Beam with Material Non-Linearity

2018 5th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造;土木建筑工程

Rizov, V.^1

Department of Technical Mechanics, University of Architecture, Civil Engineering and Geodesy, Sofia

1046, Bulgaria^1

关键词: Adhesively bonded;    Complementary strain energy;    Delamination crack;    Material non-linearity;    Multilayered beams;    Parametric investigations;    Ramberg-osgood;    Stress strain relation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/473/1/012002/pdf
DOI  :  10.1088/1757-899X/473/1/012002

来源: IOP

【 摘 要 】

The strain energy release rate for a delamination crack in a multilayered cantilever beam which exhibits material non-linearity is derived by considering the energy balance. The material non-linearity is described by the Ramberg-Osgood stress-strain relation. A cantilever beam made of adhesively bonded lengthwise vertical layers is studied. Each layer has individual widths and material properties. Besides, the delamination is located arbitrary between layers. The strain energy release rate is derived also by differentiating the complementary strain energy with respect to the crack area for verification. It is shown that the solution derived is useful for parametric investigations of delamination in multilayered beams.