Effect of wave type defects on edge crack propagation of cold rolled strip

JiaCong Ying; JianJun Chen; XinNian Li

doi:10.1117/12.2638822

20 September 2022 Effect of wave type defects on edge crack propagation of cold rolled strip

JiaCong Ying, JianJun Chen, XinNian Li

Proceedings Volume 12261, International Conference on Mechanical Design and Simulation (MDS 2022); 122610L (2022) https://doi.org/10.1117/12.2638822
Event: Second International Conference on Mechanical Design and Simulation (MDS 2022), 2022, Wuhan, China

Abstract

Wave type defects can cause strip edge cracks and belt breaking accidents in the cold rolling process. Most of the researches only focused on the crack propagation in good plate shape, and there is still a lack of systematic research on the generation and expansion of cracks in cold-rolled strip with wave type defects. In this study, the uniaxial tensile constitutive relationship of the test material was obtained by tensile test combined with finite element simulation firstly. The neck shrinkage and fracture of the material were determined by metallographic test and scanning electron microscopy to determine the magnitude range of the volume fraction of some voids in the GTN model. Then the characteristic damage parameters in the GTN model were determined based on the GTN damage model combined with the response surface method; finally, the cold continuous rolling model was established by ABAQUS, and the influence of different wave type defects parameters on crack propagation was analyzed based on the GTN model. The results show that the length of crack propagation increases with the increase of wave height, decreases with the increase of wave length. The length of edge notch increases with the increase of wave height and decreases with the increase of wave width. The change in the length of the wave has little effect on the opening length of the notch.

Citation Download Citation

JiaCong Ying, JianJun Chen, and XinNian Li "Effect of wave type defects on edge crack propagation of cold rolled strip", Proc. SPIE 12261, International Conference on Mechanical Design and Simulation (MDS 2022), 122610L (20 September 2022); https://doi.org/10.1117/12.2638822

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