Fatigue and static damage in chopped composite sheets

damage in chopped composite sheets: After examining the advantages and disadvantages of different models of damage analysis of composites made of chopped fabric, the appropriate model was selected for its applicability and rapid damage analysis capability for coding in Fortran.

VUSDFLD and VUMAT damage analysis sub-programs were prepared based on the selected model for implementation in ABAQUS software, which had the ability to analyze damage by reducing properties suddenly and gradually reducing properties.

This project was implemented for two types of static and cyclic loading.

• Predicting static damage in chopped composites
• Prediction of fatigue damage in chopped composites
• Programming of VUSDFLD and VUMAT subroutines

Fatiguestatic damage in chopped composite sheets-fractography

Contour failure

stress contour