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Multi-pass spinning of thin-walled tubular part with longitudinal inner ribs JIANG Shu-yong(江树勇)1, ZHENG Yu-feng(郑玉峰)2, REN Zheng-yi(任正义)1, LI Chun-feng(李春峰)3 1. Engineering... of the metal in backward ball spinning of thin-walled tubular part with longitudinal inner ribs. Micrography analysis reveals that severe plastic deformation leads to grain refinement, grain......
General issues of FEM in backward ball spinning of thin-walled tubular part with longitudinal inner ribs JIANG Shu-yong(江树勇), REN Zheng-yi(任正义), WU Bin(吴 滨), WU Gui-xiang(武桂香) Engineering... with the measured values. Key words: ball spinning; tube spinning; power spinning; finite element method; longitudinal inner ribs  ......
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researchers to study the backward ball spinning process of thin-walled tubular part with longitudinal inner ribs[8-9]. However, the elastic deformation is neglected in the rigid-plastic FE analysis... spinning forming of thin-walled tubular part with longitudinal inner ribs [D]. Harbin: Harbin Institute of Technology, 2005. (in Chinese) [9] JIANG Shu-yong, XUE Ke-min, ZONG Ying-ying, YU Lin. Process......
, there are no indentation triggers on the inner tubes and ribs. 2.2 Finite element model Finite element analysis was conducted with LS-DYNA [25]. The columns were modeled with the Belytchko-Tsay shell...J. Cent. South Univ. (2017) 24: 1164-1173 DOI: 10.1007/s11771-017-3519-4 Crushing analysis and multi-objective optimization of bitubular hexagonal columns with ribs ZOU Xiang(邹翔), GAO Guang-jun(高广军......
MPa, as shown in Fig.2(b). So the longitudinal cracks will not propagate in straightening stage on the outer arc side of slab. Fig.2 Stress (σZ) distribution on slab from inner arc side... center at stages 6-8 in straightening zone during continuous casting As shown in Fig.4, the longitudinal crack in the zone of slab center appears on slab surface of the inner arc side during......
of Plasticity Engineering, 2005, 12(S): 172-174. [5] JIANG Shu-yong, ZHENG Yu-feng, REN Zheng-yi, LI Chun-feng. Multi-pass spinning of thin-walled tubular part with longitudinal inner ribs[J... deformation of thin-walled cylinders with longitudinal inner ribs[J]. Materials Science and Technology, 2002, 10(3): 287-290. [7] 江树勇, 顾向东, 李春峰, 张 军. 纵向内筋薄壁筒反向滚珠旋压成形机理研究[J]. 锻压技术, 2008, 33(5): 88-91.JIANG......
on both walls. To study porous media insert, porous ribs are used on the outer and inner walls independently. The results show that when porous ribs are placed on the outer wall, although the heat... and porous media permeabilities that are studied. On the other hand, the PN of cases where porous ribs were placed on the inner wall depends on the Darcy number (Da). For example, for ribs with Da=0.1......
J. Cent. South Univ. (2020) 27: 3213-3226 DOI: https://doi.org/10.1007/s11771-020-4541-5 Local corrosion characteristics of a graphene-oxide-modified inner coating LIAO Ke-xi(廖柯熹)1, LI Xiao-xiao(李肖... characteristics of a graphene-oxide-modified inner coating. The effect of chloride concentration on the corrosion of the damaged inner coating was studied. The effects of chloride ions on damaged internal coatings......