Theoretical modeling and Verification of Roll-shearing Force of Thick Hollow Hexagonal Stainless Steel Tube

doi:10.3901/JME.2022.01.277

Abstract

Abstract: The swing type roll-shearing method is proposed and a theoretical model for solving the roll-shearing force, the important parameter of the tube roll-shearing process, is established for thick hollow hexagonal stainless steel tubes. The process of processing thick hollow hexagonal stainless steel tubes by this mechanism is analyzed; according to the knowledge of plasticity, the geometric model and mechanical model of the swing roll-shearing mechanism are established, then the essential parameter roll-shearing force is introduced and the theoretical model of it is established, and the theoretical model is applied to a specific example. The area correction coefficient and quasi-static correction coefficient are proposed to modify the theoretical model and solved by the finite element method. The revised theoretical model is verified through experiments, the practicability is tested, and the relationship between the selection of feed and correction coefficients is analyzed, which provided a reference for future experiments. Compared with previous studies, the theoretical model based on correction coefficients has higher accuracy, can better summarize the sources of error of the model of roll-shearing force, and can be applied to other types of tubes.

Key words: thick hollow hexagonal steel tube, swing type roll-shearing, roll-shearing force calculation, simulation, experiment

CLC Number:

TG372

JIANG Junxia, TAO Bangming, LIAO Haipeng, ZHANG Xinyuan, DONG Qun. Theoretical modeling and Verification of Roll-shearing Force of Thick Hollow Hexagonal Stainless Steel Tube[J]. Journal of Mechanical Engineering, 2022, 58(1): 277-288.

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