Failure Analysis on Skunk-Arm of Electrical Tower

Ahmad Rivai, and Md Radzai Said, (2010) Failure Analysis on Skunk-Arm of Electrical Tower. Journal of Engineering and Technolo, 1 (1). pp. 149-160. ISSN 2180-3811

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Affiliations

Universiti Teknikal Malaysia Melaka. Faculty of Mechanical Engineering
Universiti Teknikal Malaysia Melaka. Faculty of Mechanical Engineering

Abstract

Un-proper procedure during installation of the wire-rope could introduce unusual loading to the skunk-arm of the high-voltage electrical tower. Understanding of structural behavior of this kind of structure under different loading should be helpful to take preventive measure again possible future accidental cases. Static and buckling analyses have been performed using Finite Elements Analysis (FEA). Skunk-arm structure modelized by one-dimensional elements, combination between bar and beam. Beam elements represent main structure that are flexural members and bar elements represent stiffener that can only be in tension or ompression loading. Stress distribution due to maximum static loading did not show an excessive stress value, it means no yielding occurs in the structure. But buckling factor show the maximum loading is close to the critical loading that may provoke collapse of structure in buckling mode. The result shows the mechanism of structure failure, which begin with buckling of the lower members of the skunk. In normal condition, factor of safety of 2 is taken according to maximum loading of the structure.

Item Type:

Journal

Keywords:

Skunk-arm, failure, buckling, bending, Finite Elements Analysis.

Subjects:

T Technology, Engineering

ID Code:

11346