繊維破断の動的挙動を考慮した一方向FRMの引張強度シミュレーション

概要

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A Monte-carlo simulation technique was applied to investigate how the dynamic behavior caused by fiber-breaks affects the tensile failure process and the tensile strength of unidirectional fiber reinforced metals. A shear-lag model was used as the stress analysis method, and the solution for the equation of motion was obtained by the semi-discrete analysis. Such an analysis technique was taken into the simulation procedure, based on the r_<min> method as proposed in the previous report. Conditions of uniaxial tension in a mono-layer of boron-aluminum composite were simulated fifty times and compared with the case in which the fibers break statically. The results showed that many of the simulated failure processes are quite the same as in the case of the static fiber-breaks, but some of the failure processes indicate the more noncumulative mode. Also, the average of the simulated tensile strengths did not change appreciably and the coefficient of variation increased slightly, in comparison with the case of the static fiber-breaks.
社団法人日本材料学会の論文
1992-06-15