片振り引張り-片振りねじり組合せ荷重下における平織りガラス布積層板の疲労挙動

概要

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Fatigue Strength and stress-strain response of plain woven glass fibric laminates subjected to pulsating tension/pulsating torsion combined loading were studied in this paper. In order to evaluate the biaxial fatigue failure strength, the normalized fatigue strength that a cyclic biaxial stress is divided by the static strength was used in S-N curves. According to the test results, it is found that all data locate in a slightly wide band on the S-N plot in spite of different biaxial stress ratios, but the tendency that the slope of the S-N curve becomes low in case of a high shear stress component, can be distingushable. The tendency of modulus decays in both tension and shear even under combined loading is almost the same as those under uniaxial tension and pure torsion loadings, respectively. The direction of matrix cracking seems dependent on the principle stress direction under pulsating tension/pulsating torsion combined loading although it is also strongly influenced by fiber orientation.
一般社団法人日本機械学会の論文
1992-10-25