Analysis of a unidirectional, symmetric buffer strip laminate with damage

摘要: Abstract A method of analysis capable predicting accurately the fracture behavior a unidirectional composite laminate containing symmetrically placed buffer strips is presented. The based on materials modeling approach using classical shear-lag assumption to describe stress transfer between fibers. Explicit fiber and matrix properties three regions are retained changes in as function relative material properties, strip width initial crack length discussed. As an example, for notch (broken fibers) graphite/epoxy laminate, results show clearly manner which select most efficient combination necessary arrest crack. Ultimate failure after can occur under increasing load, either by continued extension through strip, or breakage undamaged half-plane. That is, certain choices width, jump strip. For some typical hybrid laminates it found that spacing ratio about four one efficient.