摘要
以ZrO_2/Ti-6Al-4V金属-陶瓷梯度材料为例,研究了梯度材料在承受热冲击载荷作用时的动态温度响应分析模型问题。研究的重点是分析材料的热导率和热容随温度变化的特性(即变物性特性)对动态温度响应的影响。分析结果表明,当梯度材料承受热冲击载荷作用时,变物性特性对材料的动态温度响应和材料隔热性能预测的影响十分明显,在对梯度材料的隔热性能进行优化设计时,必须采用动态变物性温度响应分析模型和理论进行分析。
The dynamic temperature responses analysis model problems of metal-ceramic functionally graded materials (FGMs) under thermal shock load are studied. Emphasis is placed on the influence of the temperature-dependent properties on the dynamic temperature responses. As an example,ZrO2/Ti-6Al-4V FGM is analyzed. The results show that the influence of the temperature-dependent properties on the dynamic temperature response and the prediction of insulation properties is very significant when the materials is under thermal shock load. It is suggested that the optimum design process of the FGMs'insulation properties must be based on the dynamic temperature-dependent analysis model.
基金
国家自然科学基金(19302017)
关键词
金属-陶瓷梯度材料
动态温度响应
变物性分析模型
metal-ceramic functionally graded materials
dynamic temperature response
temperature-dependent properties analysis model
