抄録
The stress concentration factors in unidirectional fiber reinforced metal matrix composites with random distances between the fibers were simulated based on shear-lag analysis, on the assumption that the shear deformation of the matrix metal adjacent to a broken fiber could be approximately identified as a deformation of the elastic linear hardening plasticity. The results showed that the average value of the stress concentration factor gradually decreased as the applied stress at infinity increased, and gave almost the similar value as that obtained analytically in the case of the constant distances between the fibers. Further, it was shown that the increment in the stress concentration factor was expressed approximately by 2-parameter Weibull distribution, similar to the situation in which the matrix behaved elastically in the vicinity of broken fiber. However, the degree of the variation was extremely small in the former as compared with the latter.
