(北京航空制造工程研究所，北京 100024)
摘 要: 针对连续SiC纤维增强钛基复合材料(SiCf/Ti)的成形，利用基体钛合金具有超塑性的特性，使得复合材料沿垂直纤维方向具有较大变形能力的特性，采用代表性单元法(RVE)计算复合材料的高温变形过程，分析在高温变形过程中成形工艺参数对应力—应变、应力—应变速率、m—应变速率关系的影响规律。计算结果可以为复合材料采用高温成形方法制造空心结构件提供参考。
关键字: 钛基复合材料; 高温变形; 典型单元体(RVE); 有限元法(FEM)
（AVIC Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China）
Abstract:The representative volume element method was adapted to simulate the deforming process of SiC fiber reinforced titanium matrix composite (SiCf/Ti). The influence of process parameters on stress—strain, stress—strain, m—strain rate during the high temperature deformation was analyzed, the simulating results can supply favorable reference for the fabrication of SiCf/Ti composites hollow part.
Key words: titanium matrix composites; high temperature deformation; representative volume element (RVE); finite element method (FEM)
