TOOLED THICK COMPOSITES by ARVEN H. SAUNDERS III ...

3. THE CONSOLIDATION-RESIN FLOW MODEL .......................................................... 22
3.1 The Cure Process Model .............................................................................. .22
3.2 Objectives for the New Cure Process Model ................................................ .25
3.3 New Model Approach and Assumptions/Groundrules .................................. .26
3.4 Introduction to the Pressure and Consolidation Model ................................. .27
3.5 Darcy’s Law ................................................................................................... .27
3.6 Permeability................................................................................................... .28
3.7 Viscosity ........................................................................................................ .30
3.8 Gutowski Effective Stress and Resin Pressure ............................................. .30
3.9 Hubert Fiber Bed Compaction Curve Experiments ....................................... .31
3.10 The Flat Laminate Model ............................................................................ .32
3.11 Concluding Thoughts on the Flat Laminate Model ..................................... .35
3.12 The Flexbeam Laminate Geometry, Control Volumes and Nodes ............. .36
3.13 Tool Geometry and Contact ........................................................................ .38
3.14 Model Boundary Conditions ........................................................................ .38
3.15 CV Material Properties ................................................................................ .39
3.16 Contact Areas.............................................................................................. .40
3.17 Flow Resistance .......................................................................................... .41
3.18 Flow Volume Rate and Pressure Drops ...................................................... .43
3.19 Solving for Unknown Resin Pressures ........................................................ .43
3.20 Description of Kirchoff Algorithm ................................................................. .44
3.21 Flow Direction Monitoring ............................................................................ .45
3.22 Summary of the Consolidation-Resin Flow Submodel ............................... .45
3.23 Flow Chart/Sequence for the Flexbeam Model ........................................... .47
3.24 Cure Kinetics Models .................................................................................. .48
3.25 Material Model Parameters ......................................................................... .49
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