ELASTOPLASTIC OPTIMUM DESIGN OF Ni/TiC FUNCTIONAL GRADIENT MATERIAL
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition1994年第2期
论文作者：南策文 张清杰 蔡克峰 闵新民 袁润章
文章页码：8 - 14
摘 要：<正>The thermal residual stresses developed in a disk-shaped.Ni/TiC functionally gradient material （FGM） during its fabricationare investigated by an elastic-plastic finite element numerical ap-proach.Constitutive relations for the graded Ni-TiC composite interlayers between pure metal Ni and ceramic TiC are estimated by usingan effectiv-medium approach,and effective plastic strain and stressdistributions are computed for simulated cooling from an assumed fab-rication temperature.Analyses are performed for a fixed specimen ge-ometry and the graded region is treated as a series of perfectly bondedequal-thick layers.The restults are compared with those obtained by on-ly considering elastic material response to assess the effect of plasticityon the optimum fabrication design of the Ni/TiC FGM.It is demon-strated that the consideration of plasticity is of critical importance foroptimization of the metal/ceramic gradient materials.
南策文，张清杰，蔡克峰，闵新民，袁润章
摘 要：<正>The thermal residual stresses developed in a disk-shaped.Ni/TiC functionally gradient material （FGM） during its fabricationare investigated by an elastic-plastic finite element numerical ap-proach.Constitutive relations for the graded Ni-TiC composite interlayers between pure metal Ni and ceramic TiC are estimated by usingan effectiv-medium approach,and effective plastic strain and stressdistributions are computed for simulated cooling from an assumed fab-rication temperature.Analyses are performed for a fixed specimen ge-ometry and the graded region is treated as a series of perfectly bondedequal-thick layers.The restults are compared with those obtained by on-ly considering elastic material response to assess the effect of plasticityon the optimum fabrication design of the Ni/TiC FGM.It is demon-strated that the consideration of plasticity is of critical importance foroptimization of the metal/ceramic gradient materials.
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