DESIGN AND COMPUTATION OF LAMINATEDCOMPOSITE STRUCTURES

摘要

The optimum design of laminated composite structures in terms of strength is a complex taskbecause many different mechanisms are involved in the damage and rupture to which these materialsare subject. The great diversity of the damage mechanisms and their patterns of evolution make itextremely difficult to estimate the strength margins. It is still impossible, for instance, to performsimulations on industrial structures made of unidirectional ply laminates up to rupture. The strategyadopted in this study on designing laminated composite structures is based on the choice of materials(woven or unidirectional plies) and the use of simple models (focusing on the rupture of the first ply)with which industrial structure analyses can be carried out. The choice of materials (woven orunidirectional plies) does not depend only on mechanical criteria but also on the simplicity of thecorresponding modelling procedures.