A SIMPLE THEORY FOR LOW CYCLE MULTIAXIAL FATIGUE |
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| Authors: | R.D. LOHR E. G. ELLISON |
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| Affiliation: | Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, U.K. |
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| Abstract: | Abstract— A theoretical development based on a simple physical model is proposed to help the designer predict high strain multi-axial fatigue behaviour. This approach hypothesises that the maximum shear strain γ*, on planes driving the crack through the thickness, controls the fatigue crack propagation rate and hence the life. The direct strain δ*n acting normal to the plane of γ* can exert a secondary modifying influence. Experimental results from several research laboratories have been analysed in this manner with some success. |
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