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Modeling and mesoscopic damage constitutive relation of brittle short-fiber-reinforced composites 被引量:1
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作者 刘洪秋 梁乃刚 夏蒙棼 《Science China(Technological Sciences)》 SCIE EI CAS 1999年第5期530-540,共11页
Aimed at brittle composites reinforced by randomly distributed short-fibers with a relatively large aspect ratio, stiffness modulus and strength, a mesoscopic material model was proposed. Based on the statistical desc... Aimed at brittle composites reinforced by randomly distributed short-fibers with a relatively large aspect ratio, stiffness modulus and strength, a mesoscopic material model was proposed. Based on the statistical description,damage mechanisms, damage-induced anisotropy, damage rate effect and stress redistribution, the constitutive relation were derived. By taking glass fiber reinforced polypropylene polymers as an example, the effect of initial orientation distribution of fibers, damage-induced anisotropy, and damage-rate effect on macro-behaviors of composites were quantitatively analyzed. The theoretical predictions compared favorably with the experimental results. 展开更多
关键词 short-fiber reinforced composites MESOSCOPIC material model DAMAGE CONSTITUTIVE theory dam-age-induced anisotropy damage-rate effect.
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