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Swaged Fittings Under Tension and Fatigue Loads

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Although swaged terminals have become increasingly important for structural engineering and mechanical handling, no technical standards exist either for production or for structural analysis. Owing to the complex behaviour of the components (terminal and wire rope) analytical calculations are not available to estimate the load capacity of swaged terminals under tension or fatigue loads. Only a few design recommendations are available, which are based on geometric parameters and experimental data. Therefore the load capacity of the swaged terminal was investigated in a PhD thesis at the University of Stuttgart. The task was split into theoretical and experimental sections. Analytical formulas were derived with the Finite Element Method to describe the behaviour of wire rope and sleeve after swaging. For this wire rope termination in combination with open spiral strands, the fatigue properties were investigated in a systematic test program. Owing to non-uniform methods of analysis, available test results cannot be applied directly to other rope constructions and terminations. Current standards defined endurance loads for defined rope types and termination such as cast sockets. For safe dimensioning, it is necessary to specify mechanical closure and fatigue conditions considering stress and amplitude depending on swage parameter and material.
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Document Type: Research Article

Publication date: 2010-08-01

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    Structural Engineering International (SEI), the quarterly Journal of IABSE, published since 1991, is the leading international journal of structural engineering dealing with all types of structures and materials. SEI offers its readers a unique blend of short profiles on recent structures, and longer, in-depth technical articles on research, development, design, construction and maintenance. Articles are written by practicing engineers and academia from around the world and reflect the high standards of IABSE. IABSE Peer Review stamps are given to papers that have passed through a highly selective review process and demonstrate a significant contribution to the state of structural engineering knowledge.To recognise contributions of the highest quality, an Outstanding Paper Award is presented each year.

    SEI is printed in Switzerland; ISSN 1016-8664; E-ISSN 1683-0350
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