LEFM analysis and service simulation testing of a welded frame structure.

• In this paper the results from fatigue analysis and testing of a welded frame are discussed. The structure contains some typical welds, which can be found on a frame to a wheel loader. The test was carried out with a service load spectrum with an overall stress ratio, R, of about -1. The fatigue cracks started from the root side of the welds in all cases. The test results were correlated with linear elastic fracture mechanics (LEFM) including different assumptions of residual stress distributions.

Nyckelord

LEFM

weld

testing

fatigue

structure

TECHNOLOGY

TEKNIKVETENSKAP

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