Affiliation:
1. The Ohio State University, Dept. of Mech. Eng., 206 West 18th Avenue, Columbus, OH 43210
Abstract
The main objective of this paper is to simulate springback using a combined kinematic/isotropic hardening model. Material parameters in the hardening model are identified by an inverse method. A three-point bending test is conducted on 6022-T4 aluminum sheet. Punch stroke, punch load, bending strain, and bending angle are measured directly during the tests. Bending moments are then computed from these measured data. Bending moments are also calculated based on a constitutive model. Material parameters are identified by minimizing the normalized error between two bending moments. A micro genetic algorithm is used in the optimization procedure. Stress-strain curves are generated with the material parameters found in this way, which can be used with other plasticity models. ABAQUS/Standard, which has the combined isotropic/kinematic hardening model, is used to simulate draw-bend of 6022-T4 aluminum sheet. Absolute springback angles are predicted very accurately.
Reference29 articles.
1. Zhang, Z. T., and Hu, S. J., 1998, “Stress and Residual Stress Distributions in Plane Strain Bending,” Int. J. Mech. Sci., 40, No. 6, pp. 533–543.
2. Wenner, M. L. , 1983, “On Work Hardening and Springback in Plane Strain Draw Forming,” Journal Applied Metal Working, 2, No. 4, pp. 342–349.
3. Mickalich, M. K., and Wenner, M. L., 1998, “Calculation of Springback and its Variation in Channel Forming Operations,” Symposium Proceedings, Society of Automotive Engineers Meeting, Detroit, pp. 125–131.
4. Zhang, and Lee, D., 1995, “Effect of Process Variables and Material Properties on the Springback Behavior of 2-D Draw Bending Parts,” SAE Technical Paper Series 950692, International Congress and Exposition, MI.
5. Tang, S. C., 1987, “Analysis of Springback in Sheet Forming Operation,” Proceedings of ICTP, Advanced Technology of Plasticity, pp. 193–197.
Cited by
24 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献