Modeling creep behavior of fiber compositesA micromechanical model for the creep behavior of fiber composites is developed based on a typical cell consisting of a fiber and the surrounding matrix. The fiber is assumed to be linearly elastic and the matrix nonlinearly viscous. The creep strain rate in the matrix is assumed to be a function of stress. The nominal stress-strain relations are derived in the form of differential equations which are solved numerically for off-axis specimens under uniaxial loading. A potential function and the associated effective stress and effective creep strain rates are introduced to simplify the orthotropic relations.
Document ID
19890043230
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chen, J. L. (Purdue Univ. West Lafayette, IN, United States)
Sun, C. T. (Purdue University West Lafayette, IN, United States)