NUMERICAL SIMULATION ON FIBER COMPACTION PROCESS OF FIBER WINDING COMPOSITES IN CURING PROCESS

Abstract

Abstract: In the curing process of fiber winding composites, the fiber volume fractions and the thickness of winding layer are affected by the performance of resin flow and winding tension. Based on Squeeze-sponge′ model, a corresponding finite element model is developed to simulate resin flow and fiber compaction process in the curing process. The curing degree, temperature, resin viscosity and permeability of fiber winding composites are taken into account. Winding features including winding tension and winding patterns are considered. According to data in reference, the numerical model was proved to possess relative superior reliability. The effects of the variation of winding tension on the resin pressure, fiber volume fractions during curing process was studied attentively. It is found that when prepreg tape wind with constant interlaminar stress, resin distributes more symmetrically in the radial direction, and fiber volume fraction of layers tend to be more uniform compared with prepreg tape winding with constant tension. Increasing winding tension of layers which are away from the resin export can make fiber volume fraction equal in every layer.

Key words: fiber winding composites, resin flow, curing process, fiber compaction, numerical simulation

CLC Number:

TB332

REN Ming-fa, LIU Chang-zhi, CONG Jie, ZHANG Jing. NUMERICAL SIMULATION ON FIBER COMPACTION PROCESS OF FIBER WINDING COMPOSITES IN CURING PROCESS[J]. Fiber Reinforced Plastics/Composites, 2016, 0(8): 5-12.

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