## Journal of Central South University

 第50卷    第4期    总第296期    2019年4月

[PDF全文下载]    [Flash在线阅读]

(1. 重庆大学 机械传动国家重点实验室，重庆，400044；
2. 重庆交通大学 交通运输学院，重庆，400074；3. 重庆大学 机械工程学院，重庆，400044
)

Study on axial mechanical performances of wire rope strand considering inter-wire contact based on semi-analytical method

1. The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China;
2. College of Traffic & Transportation, Chongqing Jiaotong University, Chongqing 400074, China;
3. College of Mechanical Engineering, Chongqing University, Chongqing 400044, China

Abstract:To study the axial mechanical performances for wire rope strand considering inter-wire contact, the mathematical model of wire rope strand subjected to axial tension and torsion loads was established, into which the Poisson''''s ratio effect and inter-wire contact were incorporated, and the model was solved with semi-analytical method (SAM). The conjugate gradient method was used for analyzing the inter-wire contact pressure, and fast Fourier transform was employed to accelerate the solution of contact deformation. Meanwhile, the validity of the above model and method was verified. The results show that the central wire suffers from greater tension load than the outside wire during the axial tension process. The axial strain of the outside wire, contact pressure, contact deformation and half contact width between the central and outside wires increase with the increase of the torsion load during the axial torsion process. Moreover, the contact between the central and outside wires, and the transverse radial contraction of outside wires can lead to a slight decrease in the helix radius of the outside wire centerline.

Key words: axial mechanical performances; inter-wire contact; wire rope strand; semi-analytical method; fast Fourier transform

 中南大学学报（自然科学版） ISSN 1672-7207 CN 43-1426/NZDXZAC 中南大学学报（英文版） ISSN 2095-2899 CN 43-1516/TBJCSTFT