A micro‐macromechanical approach for analyzing creep in randomly oriented short fiber composites

Abstract

The main purpose of this research is to develop a model investigating creep phenomenon in polymeric composites reinforced with randomly oriented short fibers. The creep phenomenon is first analyzed in a representative volume element of a long‐fiber composites at the scale of micro through an implicit approach. Then, creep analysis is performed at laminate level as the macro‐scale analysis. Then, creep response of a quasi‐isotropic laminate is obtained where the outputs of the micro‐scale analysis are fed as input data to the macro‐scale modeling. Laminate analogy is properly integrated with creep modeling technique to obtain the creep behavior of randomly oriented short fiber composites. The results of modeling are compared with published experimental data revealing the proper performance of the developed modeling for both short‐term and long‐term creep phenomena.

A multiscale study of heat treatment effects on the interlayer mechanical properties of 3D printed continuous carbon fiber‐reinforced composites

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“…Composites have drawn considerable interest from research and industry, due to their excellent durability, lightweight, high specific stiffness, strength, etc 1,2 . However, traditional manufacturing techniques limited the forming of complex parts 3 .…”

Research and prediction of creep behavior of triaxial warp‐knitted composites by time–temperature equivalent principle

“…Therefore, it was particularly important to accelerate the creep experiment and establish the creep model [1][2][3] to predict the creep behavior. Creep is the most direct expression of the viscoelastic properties of polymers [4][5][6] and is also one of the main failure forms of material. Many engineering problems include creep 7,8 mainly exists in fan blades, bridges, parts and other places and has a great impact on safety performance of structure part.…”