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Thinning and residual stresses of sheet metal in the deep drawing process
Highlights Die shoulder radius has to be about 10 times sheet thickness (t). Punch nose radius has to be <4 times sheet thickness (t). Thicker sheets increase both thinning and maximum residual stresses. Both thinning and max. residual stresses are reduced for radial clearances<(t). Min. residual stress is at μp, μh and μd close to 0.3, 0.14, and 0.125 respectively.
Abstract This paper presents a Finite Element (FE) model developed for the 3-D numerical simulation of sheet metal deep drawing process (Parametric Analysis) by using ABAQUS/EXPLICIT Finite Element Analysis (FEA) program with anisotropic material properties and simplified boundary conditions. The FE results are compared with experimental results for validation. The developed model can predict the thickness distribution, thinning, and the maximum residual stresses of the blank at different die design parameters, including both geometrical and physical parameters. Furthermore, it is used for predicting reliable, working parameters without expensive shop trials. Predictions of the thickness distribution, thinning and the maximum residual stresses of the sheet metal blank with different design parameters are reported. Frictional limitations and requirements at the different interfaces are also investigated.
Thinning and residual stresses of sheet metal in the deep drawing process
Highlights Die shoulder radius has to be about 10 times sheet thickness (t). Punch nose radius has to be <4 times sheet thickness (t). Thicker sheets increase both thinning and maximum residual stresses. Both thinning and max. residual stresses are reduced for radial clearances<(t). Min. residual stress is at μp, μh and μd close to 0.3, 0.14, and 0.125 respectively.
Abstract This paper presents a Finite Element (FE) model developed for the 3-D numerical simulation of sheet metal deep drawing process (Parametric Analysis) by using ABAQUS/EXPLICIT Finite Element Analysis (FEA) program with anisotropic material properties and simplified boundary conditions. The FE results are compared with experimental results for validation. The developed model can predict the thickness distribution, thinning, and the maximum residual stresses of the blank at different die design parameters, including both geometrical and physical parameters. Furthermore, it is used for predicting reliable, working parameters without expensive shop trials. Predictions of the thickness distribution, thinning and the maximum residual stresses of the sheet metal blank with different design parameters are reported. Frictional limitations and requirements at the different interfaces are also investigated.
Thinning and residual stresses of sheet metal in the deep drawing process
El Sherbiny, M. (author) / Zein, H. (author) / Abd-Rabou, M. (author) / El shazly, M. (author)
2013-10-20
11 pages
Article (Journal)
Electronic Resource
English
Thinning and residual stresses of sheet metal in the deep drawing process
| British Library Online Contents | 2014
Thinning and spring back prediction of sheet metal in the deep drawing process
| British Library Online Contents | 2014