Coupled Process Modeling of Flow and Transport Phenomena in LCM Processing
Tóm tắt
In Liquid Composite Molding (LCM) processes, dry fabric preforms are impregnated with a thermoset resin in a closed mold to fabricate a composite. The resin impregnation process is usually accompanied by other phenomena. In this work, we concentrate on transport phenomena such as convection of heat, cure and volatiles that impact the filling process and/or the quality of the manufactured part. Conventional approach to modeling such a flow is to integrate all the involved physics into the numerical solver. The complexity of integrated computational models will increase the computational time and complicate modification of transport and retention models once implemented. The latter particularly complicates the exploratory modeling attempts to uncover additional physics that require fast and easy code modification. We propose and provide an implementation methodology to separately couple transport and flow models. With this approach, one can couple flow simulation using highly specialized simulation tools with associated transport phenomena that use separate implementation. The emphasis is on transport of volatiles, both discrete bubbles and dissolved solvents, but it is equally applicable to other problems, such as particle transport and filtration or cure propagation. The challenge of this approach is to (1) formulate proper models and implement them and (2) solve the communication between models efficiently. In our case, the distinct models can be coupled through data exchange, via standardized message passing interface (MPI). A well-tested and optimized flow simulation tool LIMS (Liquid Injection Molding Simulation) is used to implement the coupled simulation processes and transfer the simulation state in an efficient manner to model other transport phenomena. Coupled models to track distinct particles and/or bubbles of volatiles and implement convected/diffused dissolved volatiles. The results are presented highlighting the feasibility and utility of this methodology.
Tài liệu tham khảo
Hieber CA, Shen SF (1980) A finite element/finite difference simulation of the injection mold filling process. J Non-Newtonian Fluid Mech 7:1–31
Bruschke M, Advani SG (1990) Finite element/control volume approach to mold filling in anisotropic porous media. Polym Compos 11:398–405
Voller VR, Chen YF (1996) Prediction of filling times of porous cavities. Int J Numer Methods 23(7):661–672
Trochu F, Gauvin R, Gao D-M (1993) Numerical analysis of the resin transfer molding process by the finite element method. Adv Polym Technol 12(4):329–342
Phelan FR (1997) Simulation of the injection process in resin transfer molding. Process Polymer Composites 18:460–476
Mathur R, Fink BK, Advani SG (1999) Use of genetic algorithms to optimize gate and vent locations for the resin transfer molding process. Polym Compos 2:167–178
Minaie B, Chen YF, Mescher MA (2002) A methodology to obtaina desired pattern during resin transfer molding. J Comp Mater 14:1677–1692
Nielsen DR, Pitchumani R (2002) Closed-loop flow control in resin transfer molding using real-time numerical process simulation. Comp Sci Technol 2:283–298
Ngo NG, Mohan RV, Chung PW, Tamma KK (1998) Recent developments encompassing non-isothermal/isothermal liquid composite molding process modeling/analysis: physically accurate, computationally effective, and affordable simulations and validations. J Thermoplast Compos Mater 6:493–532
Trochu F, Ruiz E, Achim V, Soukane S (2006) Advanced numerical simulation of liquid composite molding for process analysis and optimization. Composites Part A 37:890–902
Chebil N, Deléglise-Lagardère M, Park CH (2019) Efficient numerical simulation method for three dimensional resin flow in laminated preform during liquid composite molding processes. Composites Part A 125:2154–2163. https://doi.org/10.1016/j.compositesa.2019.105519
Park CH, Lebel A, Saouab A, Bréard J, Lee WI (2011) Modeling and simulation of voids and saturation in liquid composite molding processes. Composites Part A 42:658–668
Lefevre D, Comas-Cardona S, Binétruy C, Krawczak P (2007) Modelling the flow of particle-filled resin through a fibrous preform in liquid composite molding technologies. Composites Part A 38:2154–2163
Abliz D, Berg DC, Ziegmann G (2019) Flow of quasi-spherical nanoparticles in liquid composite molding processes. Part II: Modeling and simulation. Composites Part A 125:105562. https://doi.org/10.1016/j.compositesa.2019.105562
Simacek P, Advani SG (2004) Desirable features in mold filling simulations for liquid composite molding processes. Polymer Comp 25(4):355–367. https://doi.org/10.1002/pc.20029
Maier RS, Rohaly TF, Advani SG, Fickie KD (1996) A fast numerical method for isothermal resin transfer mold filling. Int J Numer Methods Eng 39
Simacek P, Advani SG (2006) Role of acceleration forces in numerical simulation of mold filling processes in fibrous porous media. Composites Part A 37(11)
Simacek P, Advani SG (2018) Resin flow modeling in compliant porous media: an efficient approach for liquid composite molding. Int J Mater Form 11(4):503–515
Bruschke MV, Advani SG (1994) A numerical approach to model non-isothermal viscous flow through fibrous media with free surfaces. Int J Numer Methods Fluids 19:575–603. https://doi.org/10.1002/fld.1650190704
Tucker III CL, Dessenberger RB (1994) Governing equations for flow and heat transfer in stationary fiber beds, In: SG Advani (eds) Flow and rheology in polymer composites manufacturing, Elsevier
Maldonado J, Louis B, Klunker F, Ermanni P (2012) Reactive flow of thermosetting resins: implications to lcm processing, In: Eleventh international conference on flow processes in composite materials (FPCM-11), Auckland, New Zealand
Aydil T, Taniab H, Erdal M (2014) Resin transfer molding of particle-filled, continuous-fiber rein forced composites, In: Proceedings of the american society for composites - 29th technical conference, ASC
Gangloff JJ, Hwang WR, Advani SG (2014) Characterization of bubble mobility in channel flow with fibrous porous media walls. Int J Multiph Flow 60:76–86
Simacek P, Advani SG (2003) A numerical model to predict fiber tow saturation during liquid composite molding. Comp Sci Technol 63(12):1725–1736. https://doi.org/10.1016/S0266-3538(03)00155-6
Modi D, Simacek P, Advani SG (2003) Influence of injection gate definition on the flow-front approximation in numerical simulations of mold-filling processes. Int J Numer Methods Fluids 42(11)
Niknafs Kermani N, Simacek P, Advani S (2020) bond-line porosity model that integrates fillet shape and prepreg facesheet consolidation during equilibrated co-cure of sandwich composite structures. Composites Part A 139:106071. https://doi.org/10.1016/j.compositesa.2020.106071
Bickerton S, Stadtfeld HC, Steiner KV, Advani SG (2001) Design and application of actively controlled injection schemes for resin-transfer molding. Compos Sci Technol 61(11):1625–1637
Sozer EM, Bickerton S, Advani SG (2000) On-line strategic control of liquid composite mould filling process. Composites Part A 31(12):1383–1394