Research On The Mechanics Properties And Thermal Strain Of Function Gradient Material

Aims of the paper study Gradient Materials design technique, It is adopted about the method of the quality mechanics continuously to the mechanics kind of the Function Gradient Material, it was hot to proceeded the analysis in response to the dint, combining Theory of Minimum Energy and Energy Dissipation Rate research to the strength standard of Function Gradient Material.Making use of continuum mechanics theory and mixed-mode of composites to proceed the analysis to the valid elastic modulus of composites, establish the improvement method of mixed-mode and obtain the improvement formula of dope out valid elastic modulus and obtain improved formula about change rule of Functionally Gradient Materials along direction of grads. Through the solid example an enunciation, the improved formula is more approach actual and more wide, more valid than established formula according to Vight model and Halpain-Tsai modified formula and exponential function. Making use of the consecution lay the quality mechanics method to proceed to the calculation model of the steps a material the theories deduces, getting the steps a material is hot to compute the formula in response to the dint. And the application presses index number to distribute the thing layering model reforms the tradition uses the even layering calculation the Gradient Materials slab, the calculation expresses, model reforming behind to hot conduct, the temperature is more high at the request of the calculation of the dint ratio the traditional method refrains from rash action the speed wants quick many, accuracy more obvious.Consume from the least can the principle set out, establishing to be applicable to the strength standard of the Gradient Material, making Gradient Material in its design contain the theories of the strength according to.Through the textual research, provided for the Gradient Material design three aspects can make use of the technique:one, found out the more simple practical estimate method for the Gradient Material mechanics kind;Two, provided for the calculation of the Gradient Material, three kinds of hot should the dint calculation analyze the model with the steps a knothole more fast calculation layering model, combining can make use of the steps a plank excluding of go to in the Gradient Material;Three, for after the Gradient Material strength compute with experimented to provide the strength standard.