【作者】 侯召轩； 吴向东； 李新军； 万敏；

【Author】 Hou Zhao-xuan;Wu Xiang-dong;Li Xin-jun;Wan Min;Beihang University;

【机构】 北京航空航天大学；

【摘要】 液压胀形技术是目前加工空心零件的主要工艺之一^[1],因其能够节约材料,同时成形效果较好,得到了越来越广泛的应用^[6]。液压胀形工艺受到多种因素的影响,因此对液压胀形技术展开数值模拟研究,具有实际意义。本文针对441铁素体不锈钢,进行单拉实验,获得材料模型;因偏心管的几何特殊性,成形时厚度不均匀,成形较困难,因而进行数值模拟,并优化胀形工艺参数,得到了较好的成形性能。更多还原

【Abstract】 Hydro-bulging is a kind of forerunner manufacturing technique in making hollow light body^[1], which is widely used in industry for material saving and good forming effect^[6]. Hydro-bulging is affected by technological parameter. Thus, it is important to explore by the numerical simulation. In this paper, the plastic strain mechanism of OC_r18N_b stainless steel sheet was investigated by room-temperature uniaxial tensile test. On account of complex geometry shape of the decentered tube, technological parameter was optimized to get the effective metal forming property.更多还原