Thermal Stress Analysis of High Voltage Porcelain Post Insulator

En Wei Zhang; Yun Bo Yang; Wei Song; Xiao Wei Wei; Zhi Bin Qiu; Jiang Jun Ruan; Dao Chun Huang

doi:10.4028/www.scientific.net/AMM.521.366

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 521Thermal Stress Analysis of High Voltage Porcelain...

Thermal Stress Analysis of High Voltage Porcelain Post Insulator

Abstract:

Thermal stress caused by different expansion coefficients of porcelain, cement and cast iron is one of the reasons that lead to fracture accidents of high voltage porcelain post insulators. In order to study the thermal stress distribution of post insulator, finite element model is established for numerical simulation calculation under different environmental temperatures contains steady state analysis and transient analysis. The results indicate that temperature variation cause stress concentration at the flange interface of post insulator, while the adverse effect caused by low temperature environment below zero degree centigrade is severer than high temperature.

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Periodical:

Applied Mechanics and Materials (Volume 521)

Pages:

366-370

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.521.366

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Online since:

February 2014

Authors:

En Wei Zhang, Yun Bo Yang, Wei Song, Xiao Wei Wei, Zhi Bin Qiu, Jiang Jun Ruan, Dao Chun Huang

Keywords:

Finite Element Method (FEM), Porcelain Post Insulator, Stress Concentration, Temperature, Thermal Stress

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