Particle simulation of dual-scale flow in resin transfer molding for process analysis

Shigeki Yashiro, Daichi Nakashima, Yutaka Oya, Tomonaga Okabe, Ryosuke Matsuzaki

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Modeling the inhomogeneous microstructures of fibrous tows is important for analyzing the process of resin transfer molding because dual-scale pores in a preform can lead to void formation. This study focused on the development of a microscopic flow analysis method to predict the impregnation of fiber bundles. The moving particle semi-implicit method was adopted to model the microstructure of a fiber bundle explicitly and inter-particle potential force was introduced into the numerical model to take account for the capillary effect. The predicted process of impregnation and void formation agreed with empirical observations. The developed approach was applied to predict the relationship between the modified capillary number and void content to identify the optimal molding conditions to reduce microvoids. The obtained relationship reproduced the trends of a reported experiment, which indicates that the proposed approach will provide information about optimal conditions for minimizing void content.

Original languageEnglish
Pages (from-to)283-288
Number of pages6
JournalComposites Part A: Applied Science and Manufacturing
Publication statusPublished - Jun 2019

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials


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