高电压技术2018，Vol.44Issue(2)：498-506,9.DOI:10.13336/j.1003-6520.hve.20180131021
高压电缆接头过盈配合及硅橡胶附件力学性能计算
Interference Fit and Mechanical Property Computation of Silicone Rubber Accessory in HV Cable Joint
摘要
Abstract
The silicone rubber accessory in the cable joint is the weak part of the high voltage(HV) cable system.In order to study the influence of interference fit on the interracial stress of the cable and accessory,uniaxial tensile tests were carried out on silicone rubber material and then the constitutive model was obtained.Then,based on a typical failure case,a cable connector was simplified as a theoretical model.The interference pressure was studied by theoretical analysis and finite element simulation.The results indicated that the maximum interracial pressure could be observed at the location where the thickness of the semiconducting layer was greatest.The Yeoh model was suitable for the semiconducting layer and insulating layer rubber with high computational efficiency and robustness.In addition,the magnitude of interference and thickness of insulating layer would influence the interfacial stress,among which the magnitude of interference was the dominant factor.For this failure case,the interference magnitude increased by 0.01 m and the interracial stress would increase by 0.17 MPa,while the insulating layer thickness increased by 0.01 m and the interfacial stress would increase by 0.006 5 MPa.So it is necessary to focus on controlling the magnitude of interference in the stress design of cable joint.关键词
高压电缆/硅橡胶附件/本构模型/过盈配合/界面应力/过盈量Key words
HV cable/silicone rubber accessory/constitutive model/interference fit/interfacial stress/magnitude of interference引用本文复制引用
谢强,王晓游,傅明利,惠宝军,刘通..高压电缆接头过盈配合及硅橡胶附件力学性能计算[J].高电压技术,2018,44(2):498-506,9.基金项目
教育部霍英东教育基金优选资助课题(114021).Project supported by Fok Ying Tung Education Foundation for Young Scientists (114021). （114021）
