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用上限元法可模拟轴对称闭式模锻锻造过程中体积的流动特征。这种方法是应用增量法完成的。用使能耗率减至最小的速度场来预测型腔中的内部变形。这种方法包括对使用各种尺寸比的毛坯在上、下深型腔内的飞边形成和填充程度的估算。介绍了一种用上限元法进行预成形件设计的新方法,该方法是一种从需要获得的锻件形状入手,反过来再分析过程的方法。
The upper bound element method can simulate the flow characteristics of the volume during axial symmetric closed forging and forging. This method is done using the incremental method. Predict internal deformation in the cavity with a velocity field that minimizes the rate of energy consumption. This method includes the estimation of the extent of flash formation and filling in the upper and lower deep cavities for blanks of various sizes. A new method for the design of preform using the upper bound element method is introduced. The method is a kind of method which starts from the shape of the forging to be obtained and then re-analyzes the process.