Finite element simulation of earing of AA3104 sheets using CMTP yield criterion

A continuum mechanics of the textured polycrystals (CMTP) yield function considering the weights of the texture-components is suggested to be directly used in finite element code ABAQUS to simulate the earing of the 3104 aluminum alloy sheets during deep drawing, taking friction and blank holder force into account. The predictions based on the CMTP yield function are compared with those on the Barlat 1991 yield function, both predict the general shape of the experimental profile with a maximum at 45 center dot but underestimate the cup height by approximate 1 mm. The thickness variation induced by deep drawing is also described. Further improvements in the accuracy of the simulation are also discussed. Reasonable agreement of the predictions on the CMTP yield function with the measured earing profiles has been obtained. The earing predictions of the 3104 aluminum alloy sheets on the CMTP yield function is more accurate than those on the Barlat 1991 yield function. The thickness variation of the blank in the simulation is in accordance with the practice process, which shows increasing friction and blank holder force enables the height of earing to increase.