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Trans. Nonferrous Met. Soc. China 22(2012) s287-s293 Springback mechanism and compensation of cryogenic Ti alloy tube after numerically controlled bending ZHAN Mei, ZHAI Hua-dong, YANG He State Key... Abstract: The springback mechanism for a large-diameter thin-walled CT20 titanium alloy tube with an outside diameter of 85 mm and a wall thickness of 2.5 mm (denoted as D85 mm×t2.5 mm) was investigated......
Trans. Nonferrous Met. Soc. China 22(2012) 2233-2240 Sensitivity of springback and section deformation to process parameters in rotary draw bending of thin-walled rectangular H96 brass tube ZHU Ying... 2011; accepted 30 September 2011 Abstract: In order to study the effects of the process parameters on springback and section deformation, a sensitivity analysis model was established based......
Trans. Nonferrous Met. Soc. China 25(2015) 3048-3055 Constitutive modeling and springback simulation for 2524 aluminum alloy in creep age forming You-liang YANG1,2, Li-hua ZHAN1,2, Jie LI2,3 1. State... and springback simulation for AA2524 sheet in creep age forming (CAF) process were presented. A series of creep aging tests were performed on AA2524 at the temperature of 180-200 °C and under......
, and a new concept of neutral layer offset radius ratio was also put forward. Finally, the calculation model of bar straightening springback deflection combined with the pure bending springback theory... words: bar straightening; neutral layer offset radius ratio; springback model; experimental analysis 随着石油,船舶,汽车等制造行业的飞速发展,对高强度合金钢棒材的需求量和质量要求日益提高,其中直线度要求达到1 mm/m,甚至小于0.5 mm/m,否则后续加工中材料的去除量非常大,损耗严重,成本急剧增加......
of specimen 图12 试件回弹量的分布 Fig. 12 Springback distribution of specimen 4 实验结果及分析 为了验证有限元分析结果的准确性,在室温条件下进行了黏性介质压力成形试验,试验装置及模具如图13所示,考虑到成形过程中的回弹,成形试件外轮廓的模具尺寸以零件的上偏差为基准进行加工,成形试件内轮廓的模具尺寸... 宾, 白雪飘. 一种带有回弹补偿的钛合金钣金热成形工艺[J]. 塑性工程学报, 2013, 20(4): 71-74. ZHANG Tao, HAN Xiu-quan, SUN Bin, BAI Xue-piao. A method for titanium alloy sheet hot forming with springback compensation[J]. Journal......
Trans. Nonferrous Met. Soc. China 23(2013) 1061-1071 Springback prediction for incremental sheet forming based on FEM-PSONN technology Fei HAN1, Jian-hua MO2, Hong-wei QI1, Rui-fen LONG1, Xiao-hui... Technology, Huazhong University of Science and Technology, Wuhan 430074, China Received 5 March 2012; accepted 15 September 2012 Abstract: In the incremental sheet forming (ISF) process, springback......
, Northwest Polytechnical University, Xi’an 710072, China Received 28 July 2006; accepted 15 September 2006 Abstract: Elongation and springback are the bottleneck problems of thin-walled aluminum... bending is established based on the DYNAFORM platform. The process of thin-walled aluminum alloy tube NC precision bending is simulated with the model and the elongation and springback of tube......
cross-sectional deformations such as suck-in and volume conservation effects, along with global deformations such as springback. An analytical model was developed to determine the particular... process parameters rather than part attributes. Key words: bending technology; tools; dimensional accuracy; distortions; springback; formability 1 Introduction As a result of intensified......
into an algorithm for predicting springback and bend angle prior to the unloading sequence, the dimensional accuracy is improved. This work focuses on the development of this steering model. Since the method used... capabilities would improve the accuracy of the methodology even further. Key words: adaptive bending; closed-loop feedback; dimensional accuracy; springback; aluminium; extrusion 1 Introduction......