摘要
利用有限元分析方法,对PSZ/Mo功能梯度材料进行了优化设计,确定了最佳形状因子、层数和每一层的厚度。在此基础上,用热压烧结方法制备了六层结构的PSZ/Mo功能梯度材料。利用自制的FGM热性能测试仪,对制备的试样进行了热震性能实验,通过该实验条件下应力场和温度场的有限元计算,阐述了PSZ/Mo功能梯度材料优良抗热震性的原因。
The optimum component distribution, which includes the thickness of each layer, the number of layers and the component distribution gene, can be enacted by means of finite element analysis. Based on the calculations, the optimized PSZ/Mo functionally gradient materials were synthesized using the hot pressing method. Then the thermal shock experiment was carried out using the thermal properties testing equipment which was developed by ourselves. Based on the data from the thermal shock experiment, the temperature distribution and the thermal stress under steady heat insulation in the optimized component distribution PSZ/Mo functionally gradient materials were calculated to explain why the optimized samples have so good thermal shock resistance properties.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2003年第6期42-46,共5页
Acta Materiae Compositae Sinica
基金
国防科技重点实验室基金资助项目(JS9905)
关键词
优化设计
有限元
PSZ/Mo功能梯度材料
Finite element method
Hot pressing
Molybdenum
Temperature distribution
Thermal insulation
Thermal stress
Zirconium
