The Effect of Helix on the Nonlinear Analysis of Threaded Connection
Based on the axisymmetric and 3-D finite element models, the axial-load and stress distributions on each thread of the threaded connection have been studied. The effect of helix and the elastic-plastic behavior of the material at the thread roots have been explored. Simulation results indicate that the axial-load and stress distributions obtained from the axisymmetric finite element model show good agreement with the results of 3-D analysis in both elastic and plastic states with the same mesh density. So the axisymmetric model can be used to study the axial-load and the stress distributions of the threaded connection subjected to axial-load. The axial-load and stress distributions in threads are very sensitive to the applied load. With increasing the applied forces, the axial-load and stress distributions over teeth become homogeneous eventually.
Xianghua Liu, Zhengyi Jiang and Jingtao Han
Y. J. Sun and R. D. Liao, "The Effect of Helix on the Nonlinear Analysis of Threaded Connection", Advanced Materials Research, Vols. 148-149, pp. 1741-1744, 2011