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Date of Publication:2014-01-01

Journal:起重运输机械

Issue:8

Page Number:65-69

ISSN No.:1001-0785

Abstract:The girder of light-weight bridge crane with 5 t of rated lifting weight is taken as the study object,the data result of fatigue test for the girder as the basis,to estimate the fatigue life of girder weld joint.The finite element solid model for the girder containing weld joints is built to perform static strength analysis for test load conditions.Under the premise of static strength meeting the related requirements,the fatigue strength analysis is performed for the girder weld joint with Ver-ity module in Fe-safe developed with Battelle hot-spot stress as the core technology.The analysis result shows that fatigue strength of the girder weld after weight reduction can meet the application requirements,with reliable result and good credi-bility.The analysis method in the paper can be directly applied to the weld fatigue analysis for similar structures.

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