【摘要】 利用刚粘塑性有限元方法,对1420铝锂合金特深模锻件反挤成形过程进行了热力耦合FEM分析,获得了1420铝锂合金反挤成形时载荷与位移的关系以及工件上的内应力、应变、应变速率和温度的分布信息。所得结果对工艺制度的制定和模具设计都具有指导意义。更多还原

【Abstract】 By considering the coupled thermo -mechanical relations between temperature and deforming,a numerical sim ulation of the special long forging for 1420Al -Li alloy dur ing inverted extrusion was done by using rigid visco-plastic finite elem ent method in this paper.The relations between total load and the displacement,the distribution of s tress,strain,temperature and stra in rates during forging,which can provide useful information for the p rocess design,were gained.更多还原