Abstract:

Many new type of composites come forth continuously recently,such as thermosetting composites and thermoplastic composites.These materials are widely used in aviation,spaceflight and architecture.As a result,the research of mechanical properties has attracted much attention at home and abroad.In this paper,elasticity theory has been employed,according to condition of incompressibility in fluid mechanics,analyzed mechanical properties for the thermoplastic composites.Constitutive relationships of anisotropic viscous materials,transversely isotropic materials were obtained.Viscosity parameters η11,η12,η22,η23 were determined by the micromechanics analysis.According to the research of laminates deformation,the constitutive equation and viscosity parameters′ijare obtained.Then these results are discussed.

Key words: constitutive equation, viscosity, anisotropic, micromechanics