Modeling forces generated within rigid liquid composite molding tools. Part B: Numerical analysis |
| |
| Affiliation: | 1. Institute of Aircraft Design, University of Stuttgart, Pfaffenwaldring 31, 70569 Stuttgart, Germany;2. Fraunhofer Institute for Industrial Mathematics, Kaiserslautern, Germany;1. Department of Mechanical Engineering, Inha University, Inha-ro 100, Nam-gu, Incheon 402-751, Republic of Korea;2. Department of Mechanical Engineering, Ulsan National Institute of Science and Technology, UNIST-gil 50, Eonyang-eup, Ulju-gun, Ulsan 689-798, Republic of Korea;1. Department of Textiles, Ghent University, Technologiepark-Zwijnaarde 907, B-9052 Zwijnaarde, Belgium;2. Department of Materials Science and Engineering, Ghent University, Technologiepark-Zwijnaarde 903, B-9052 Zwijnaarde, Belgium;3. Department Materials and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium;1. School of Applied Sciences, Manufacturing and Materials Department, Composites Centre, Cranfield University, Bedford MK43 0AL, UK;2. Faculty of Engineering, Division of Materials, Mechanics & Structures, University of Nottingham, University Park, Nottingham NG7 2RD, UK;1. Methods for Structural Applications and Processes, Cenaero, Rue des Frères Wright 29, B-6041 Gosselies, Belgium;2. e-Xstream Engineering, MSC Software, Rue Emile Francqui 9, B-1435 Mont-Saint-Guibert, Belgium;3. Any-Shape, Rue de la Digue 37, B-4400 Flémalle, Belgium;4. Institute of Mechanics, Materials and Civil Engineering, Université catholique de Louvain, Place Sainte Barbe 2, B-1348 Louvain-la-Neuve, Belgium;5. Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium |
| |
| Abstract: | Liquid composite molding (LCM) processes generate forces on tooling due to internal resin pressure fields and the resistance to compaction offered by fiber reinforcements. In Part A of this work the authors have presented a detailed study on the evolution of total clamping force during resin transfer molding (RTM) and injection/compression molding (I/CM) cycles. The influence of the complex compaction response of two different reinforcements was demonstrated, important effects including stress relaxation, an apparent lubrication by the injected fluid, and permanent deformation. In the current paper attempts are made to model clamping force evolution utilizing elastic reinforcement compaction models. The predictions are shown to have significant qualitative errors if a single elastic model is applied, particularly if forces due to reinforcement compaction dominate those due to fluid pressure. By using a combination of elastic models significant qualitative and quantitative improvements were made to the predictions. It is concluded that careful characterization of both reinforcement permeability and compaction response are required for an accurate LCM tooling force analysis. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
