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材料强化模型对回弹计算模拟精度的影响 被引量:2

EFFECT OF MATERIAL WORK HARDENING MODEL ON THE SIMULATION PRECISION FOR SPRINGBACK
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摘要 回弹是冲压不可避免的一种物理现象,不仅影响工件的尺寸精度,而且影响结构的可靠性。准确计算模拟回弹,是降低和控制回弹的前提。材料在冲压过程中经受反向加载作用,表现出与单调加载时迥然不同的力学性能,因此材料强化模型的选择是影响回弹计算模拟精度的主要因素之一。利用有限元法,对汽车车身覆盖件翻边结构冲压回弹进行计算模拟,讨论各向同性强化、随动强化和混合强化模型对计算结果的影响,并与试验结果进行比较。结果表明,各向同性强化由于没有考虑包兴格效应,导致回弹计算结果偏大;随动强化没有考虑材料快速应力应变强化作用,反向软化程度偏高,导致回弹计算结果偏小;混合强化模型既包括了包兴格效应,又考虑了材料的瞬态特性,其反映的应力应变关系与真实材料最为接近,计算的弯曲应力较为精确,回弹预测结果与试验最为接近。 Springback is an inevitable phenomenon in the stamping process, which not only affects the dimension precision, but also affects the structure reliability. Therefore, an accurate prediction of springback is the first important to decrease and control the springbaek. The material in the stamping process will undergo reversed loading, and shows different mechanical properties from monotonic loading. Therefore, the material work hardening model is one of the most important factors affect the simulation precision. This paper uses finite element method to study the springback in the punching of a flanging, and the effects of isotropie, kinematic and mixed hardening models have been discussed, which is verified by the experimental. The results show that the isotropic hardening model does not consider the Bausehinger effect, which leads to an overestimation of springback. The kinematic hardening model does not consider the effect induced by the quick stress-strain, which leads to underestimation of springback. The mixed hardening model considers both the Banschinger effect and transient characteristics, showing a true stress and strain, which leads to an accurate calculation of bending residual stress and springback. The result of mixed hardening model is well consistent with the experimental.
作者 罗云 蒋文春 杨滨 王炳英 LUO Yun, JIANG WenChun, YANG Bin, WANG BingYing ( 1. College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266555, China; 2. College of Mechanical and Electrical Engineering, China University of Petroleum (East China), Qingdao 266555, China)
出处 《机械强度》 CAS CSCD 北大核心 2015年第3期551-555,共5页 Journal of Mechanical Strength
基金 国家自然科学基金(51105380,51105383,11372359) 山东省自然科学基金(ZR2010AQ002) 中国石油大学(华东)研究生创新工程(YCX2014034)资助
关键词 回弹 强化模型 残余应力 Springback Hardening model Residual stress
作者简介 罗云,男,1990年出生,硕士研究生,主要从事焊接结构完整性评价及高温蠕变强度理论的研究。 蒋文春,男,1980年出生,副教授,主要从事结构完整性、先进连接技术及中子衍射表征材料力学行为的研究,发表论文50余篇。
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参考文献13

  • 1李光耀,王琥,杨旭静,郑刚.板料冲压成形工艺与模具设计制造中的若干前沿技术[J].机械工程学报,2010(10):31-39. 被引量:40
  • 2陈炜 ,王晓路 ,高霖 .板料多步冲压回弹的数值模拟研究[J].塑性工程学报,2005,12(5):8-11. 被引量:17
  • 3邵鹏飞,王秀喜,车玫.板料成形中的回弹计算和模具修正[J].机械强度,2001,23(2):187-189. 被引量:18
  • 4Zhu Y X, Liu Y L, Yang H, et al. Improvement of the accuracy and the computational efficiency of the springback prediction model for the rotary-draw bending of rectangular H96 tube [ J ]. International Journal of Mechanical Sciences, 2012, 66:224-232. 被引量:1
  • 5Eggertsen P. A. , Mattiasson K. On the modeling of the bending- unbending behaviour for accurate springback predictions [ J ]. International Journal of Mechanical Sciences, 2009, 51 ( 7 ) : 547- 563. 被引量:1
  • 6Marretta L. , Ingarao G. , Lorenzo R. D. Design of sheet stamping operations to eontrol springbaek and thinning: A muhi-objeetive stochastic optimization approach [ J ]. International Journal of Meehanical Sciences, 2010, 52(7) : 914-927. 被引量:1
  • 7LI Hongzhou, SUN Guangyong, LI Guanyao, et al. On twist springback in advanced high-strength steels [ J ]. Materials and Design, 2011, 32(6) : 3272-3279. 被引量:1
  • 8Zhu Y X, Liu Y L, Li H P, et al. Springback prediction for rotary- draw bending of rectangular H96 tube based on isotropie, mixed and Yoshida-Uemori two-surface hardening models [ J ]. Materials & Design, 2013, 47:200-209. 被引量:1
  • 9Taherizadeh A, Ghaei A, Green D E, et al. Finite dement simulation of springback for a channel draw process with drawbead using different hardening models [ J ]. International Journal of Mechanical Sciences, 2009, 51 (4) : 314-325. 被引量:1
  • 10Muransky O. , Hamelin C. J. , Smith M. C. , et al. The effect of plasticity theory on predicted residual stress fields in numerical weld analyses [ J ]. Computational Materials Science, 2012, 54 : 125- 134. 被引量:1

二级参考文献49

  • 1PALANISWAMY H, NGAILE G, ALTAN T. Finite element simulation of magnesium alloy sheet forming at elevated temperatures[J]. Journal of Materials Processing Tech., 2004, 146(1): 52-60. 被引量:1
  • 2LIU G R, ZHANG G Y. A normed G space and weakened weak (W2) formulation of a cell-based smoothed point interpolation[J]. Int. J. Computational Methods, 2009, 6(1). 147-179. 被引量:1
  • 3LIU G R. On G space theory[J]. Int. J. Computational Methods, 2009, 6(2).- 257-289. 被引量:1
  • 4LI G Y, TAN M J, LIEW K M. Sheet forming analysis based on improved contact searching algorithm and simple approach for eontaet force evaluation[J]. J. Engrg. Materials and Technology, ASME, 2001, 123: 119-124. 被引量:1
  • 5ZHONG Z H. Finite element procedure for contact-impact problems[M]. Oxford: Oxford Press, 1993. 被引量:1
  • 6XU W L, MAC H, LI C H, et al. Sensitive factors in springback simulation for sheet metal forming[J]. Journal of Materials Processing Technology, 2004, 151(1-3): 217-222. 被引量:1
  • 7MORI K, AKITA K, ABE Y. Springback behaviour in BENDING of ultra-high-strength steel sheets using CNC servo press[J]. Journal of Materials Processing Technology, 2005, 159(1): 91-98. 被引量:1
  • 8GOMES C, ONIPEDEL O, LOVELL M. Investigation of SPRINGBACK in high s trength anisotropic steels[J]. Journal of Materials Processing Technology, 2005, 159 (1). 91-98. 被引量:1
  • 9LEE S W, YOON J W, YANG D Y. Comparative investigation into the dynamic explicit and the static implicit method for springback of sheet metal stamping[J]. Engineering Computations, 1999, 16(2-3): 347-373. 被引量:1
  • 10NOELS L, STAINIER L, PONTHOT J P. Combined implicit/explicit time-integration algorithms for the numerical simulation of sheet metal forming[J]. Journal of Computational and Applied Mathematics, 2004, 168(1-2): 331-339. 被引量:1

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