| INFLUENCE OF TEMPERATURE-DEPENDENT PROPERTIES ON THERMAL STRESSES RESPONSE AND OPTIMUM DESIGN OF C/M FGMS UNDER THERMAL CYCLIC LOADING |
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| 作者单位： | Zhai Pengcheng Zhang Qingjie Yuan RunzhangState Key Lab. Of Materials Synthesis and ProcessingWuhan University of Technology，Wuhan 430070，P. R. China |
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| 摘 要： | The influence of temperature-dependentproperties on thermal stresses response and optimum design ofnewly developed ceramic-metal functionally graded materialsunder cyclic thermal loading and high temperature gradientenvironment is studied. The thermal conductivity of materialis considered to be dependent on the temperature. In this pa-per, the thermal stresses response of the material is calculatedusing a nonlinear finite element method. Emphasis is placedon the influence of temperature-dependent properties on thethermal stresses response characteristics, the thermal stressesrelaxation properly and the thermal stresses history under thedifferent graded compositional distributions and differentheat flux magnitudes. Through the analysis, it is suggestedthat the influence of temperature-dependent properties can notbe neglected in the thermal stresses response analysis and theoptimum design process of the material must be based on thetemperature-dependent thermo-elastic-plastic theory.
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INFLUENCE OF TEMPERATURE-DEPENDENT PROPERTIES ON THERMAL STRESSES RESPONSE AND OPTIMUM DESIGN OF C/M FGMS UNDER THERMAL CYCLIC LOADING |
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| Authors: | Zhai Pengcheng Zhang Qingjie Yuan RunzhangState Key Lab Of Materials Synthesis and ProcessingWuhan University of Technology Wuhan P R China |
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| Affiliation: | Zhai Pengcheng Zhang Qingjie Yuan RunzhangState Key Lab. Of Materials Synthesis and ProcessingWuhan University of Technology,Wuhan 430070,P. R. China |
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| Abstract: | The influence of temperature-dependent properties on thermal stresses response and optimum design of newly developed ceramic-metal functionally graded materials under cyclic thermal loading and high temperature gradient environment is studied. The thermal conductivity of material is considered to be dependent on the temperature. In this paper, the thermal stresses response of the material is calculated using a nonlinear finite element method. Emphasis is placed on the influence of temperature-dependent properties on the thermal stresses response characteristics, the thermal stresses relaxation property and the thermal stresses history under the different graded compositional distributions and different heat flux magnitudes. Through the analysis, it is suggested that the influence of temperature-dependent properties can not be neglected in the thermal stresses response analysis and the optimum design process of the material must be based on the temperature-dependent thermo-elastic-plastic theory. |
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| Keywords: | Functionally graded materials temper- ature-dependent properties cyclic thermal loading ther-mal stresses response |
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