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采用双辊夹持扩旋成形新工艺来加工风机机壳零件,利用ABAQUS软件建立了风机机壳双辊夹持扩径旋压成形过程的三维有限元模型,并利用该模型进行了风机机壳扩径旋压成形过程的数值模拟。获得了成形过程中等效应力、应变及壁厚的分布,并对旋辊进给率对成形件应力应变及壁厚差的影响规律进行了研究。结果表明,等效应力、应变随着旋辊进给率的增大而减小,而最大壁厚差随着旋辊进给率的增大而增大。最后综合考虑得到旋辊进给率的建议取值为0.16 rad.r-1。
A new process of double-roll clamping and spin-forming was used to process the fan case parts. The three-dimensional finite element model of the fan case double-roller clamping and expanding spinning process was established by ABAQUS software. The fan case Numerical Simulation of Expanded Spinning Process. The distribution of equivalent stress, strain and wall thickness in the forming process was obtained. The influence of the feed rate of the roller on the stress and strain and the thickness difference of the forming part was also studied. The results show that the equivalent stress and strain decrease with the increase of the feed rate of the rollers, while the maximum wall thickness difference increases with the increase of the feed rate of the rollers. Finally, the recommended value for getting the feed rate of the roller is 0.16 rad.r-1.