(西北工业大学 凝固技术国家重点实验室，西安 710072)
摘 要: 基于三维有限元模拟软件DEFORM-3D，建立了TC4叶片精锻过程的三维热力耦合有限元模型，并以塑泥为材料，采用物理模拟方法对叶片精锻有限元模型进行了试验验证，得到了不同摩擦条件下模具等效应力、温度场及载荷的分布规律。结果表明：随着摩擦因数的增大，模具等效应力增大；模具叶身与榫头过渡区域及榫头旁侧温度分布较高，摩擦对模具叶身处温度分布的影响最大；摩擦因数增大将增加锻造的消耗能量及最大载荷。
关键字: TC4叶片；模具；摩擦；应力场；温度场
die in TC4 blade forging process
（State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China）
Abstract:A 3D coupled thermo-mechanical finite-element model for TC4 blade forging process was built on the basis of DEFORM-3D. Furthermore, the model was validated with physical trial using plasticine material. Then the distribution laws of effective stress, temperature and load of die were obtained. The results show that the value of effective stress increases with the increase of the friction factor; the temperature in the transition region between blade body and tenon as well as the temperature in the region near the tenon are high. Besides, the friction greatly influences the temperature distribution of blade body; the forging energy and maximum load increase under severe friction condition.
Key words: TC4 blade; die; friction; effective stress field; temperature field
