Progressive Failure Analysis of Advanced Composites
Abstract
This report results from a contract tasking University of Porto as follows: Structural failure of laminated composites is the result of the accumulation of several damage mechanisms such as matrix cracking, fiber fracture, fiber kinking, and delamination. The use of advanced physically-based computational models in the simulation of the mechanical response of laminated composites can reduce the number of experimental tests required to certify the composite structures used in aircraft. To develop robust analysis methods that can predict the strength and damage tolerance of advanced composite structures it is necessary to account for the onset and evolution of damage, and for the corresponding redistribution of internal loads. The objective of the project is to develop accurate, robust analytical and computational tools for calculating the strength and damage tolerance of advanced composite structures. The models to be developed are derived in the context of Continuum Damage Mechanics (CDM), which provides a rigorous framework to define the constitutive model and the corresponding computational implementation. The CDM models are implemented in a non-linear Finite Element code (ABAQUS) and must be able to predict the onset and type of damage, damage propagation, and structural collapse without requiring any intervention of the user during the analysis.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 25, 2008
- Accession Number
- ADA524389
Entities
People
- Pedro M. Camanho
Organizations
- University of Porto