A Dislocation Density Based Crystal Plasticity Model of 3D Complex Sheet Metal Forming

2011 ◽  
Author(s):  
Haiming Zhang ◽  
Xianghuai Dong ◽  
Qian Wang ◽  
Zhiying Chen
Keyword(s):  
Dislocation Density ◽  
Sheet Metal ◽  
Crystal Plasticity ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Plasticity Model ◽  
Crystal Plasticity Model

Forming Limit Prediction of BCC Materials under Non-Proportional Strain-Path by Using Crystal Plasticity

2012 ◽  
Vol 201-202 ◽  
pp. 1110-1116
Author(s):  
Mei Yang ◽  
Xiao Yan Zhang ◽  
Hao Wang
Keyword(s):  
Sheet Metal ◽  
Crystal Plasticity ◽  
Strain Path ◽  
Forming Limit Diagram ◽  
Forming Limit ◽  
Slip Systems ◽  
Plasticity Model ◽  
Forming Process ◽  
Crystal Plasticity Model ◽  
Microstructure Effect

In this paper, the forming limit of a body-centered cubic (BCC) sheet metal under non-proportional strain-path is investigated by using the Marciniak and Kuczynski approach integrated with a rate-dependent crystal plasticity model. The prediction model has been proved to be effective in predicting Forming Limit Diagram (FLD) of anisotropic sheet metal with FCC type of slip systems[1]. The same model has been used to study the FLD under non-proportional strain-path of BCC slip systems numerically and experimentally. The agreement between the experiments and simulations is good. With crystal plasticity model well describing the crystal microstructure effect, our model can be used to predict the FLD of BCC sheet metal under complicated strain path in plastic forming process with good accuracy.

A dislocation-density-based 3D crystal plasticity model for pure aluminum

2009 ◽  
Vol 57 (19) ◽  
pp. 5936-5946 ◽  
Author(s):  
Alankar Alankar ◽  
Ioannis N. Mastorakos ◽  
David P. Field
Keyword(s):  
Dislocation Density ◽  
Crystal Plasticity ◽  
Pure Aluminum ◽  
Plasticity Model ◽  
Crystal Plasticity Model
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