Numerical Simulation of Curing Deformation of Thermosetting Resin Matrix Composite Curved Structure

Abstract:

The evolutions of physical properties of composites during the curing process of the carbon fibre reinforced resin composite, such as density, modulus, coefficient of thermal expansion, specific heat capacity and thermal conductivity, were analyzed and those evolutions were introduced into the numerical simulation. The new approach to construct the curvilinear coordinate system by streamline equation of steady flow was proposed with the complex curved structure composite as the study object. By using the finite-element method and building the curvilinear coordinate system, the distribution of internal temperature, degree of cure, internal stresses and evolutions of physical properties during the curing process of the composite skin plate of a light aircraft wing were calculated. The deformation of the skin plate caused by the uneven distributions of temperature field and cure degree field, anisotropic thermal expansion coefficients and volumetric shrinkage of resin were calculated in the same model. From the numerical simulation results, it can be concluded that the curing process will be more reasonable and more accurate when the evolutions of physical properties of composites are adopted and the curvilinear coordinate system constructed by streamline equation of steady flow is fully applicable to finite element analysis of composite curved structure.

• Periodical: Applied Mechanics and Materials (Volume 684)
• Pages: 145-153
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.684.145
• Online since: October 2014
• Authors: Ji Lin He, Yun Rong Ma*, Dong Li, Yao Tan, Lei Xu
• Keywords: Composite, Curing Deformation, Curved Structure, Curvilinear Coordinate System, Finite Element Analysis (FEA), Internal Stress

References

[1] Twardowski T, Lin S, Geil R Curing in thick composite laminates: experimentand simulation[J]. Journal of Composite Materials, 1993, 27(3): 216-250.

DOI: 10.1177/002199839302700301

[2] Costa V, Sousa A. Modeling of flow and thermo-kinetics during the cure of thick laminated composites [J]. International Journal of Thermal Sciences, 2003, 42 (1): 15-22.

DOI: 10.1016/s1290-0729(02)00003-0

[3] Michaud D, Beris A. Dhurjati P Thick-sectioned RTM composite manufacturing, part II. Robust cure cycle optimization and control [J]. Journal of Composite Materials, 2002, 36(10): 1201-1230.

DOI: 10.1177/0021998302036010590

[4] Chern BC, Moon TJ, Howell JR, et al. New experimental data for enthalpy of reaction and temperature-and degree-of-cure-dependent specific heat and thermal conductivity of the Hercules 3501-6 epoxy system [J]. Journal of Composite Materials, 2002, 36 (17): 2061-(2072).

DOI: 10.1177/0021998302036017238

[5] Prasatya R McKenna GB, Simon SL. A viscoelastic model for predicting isotropic residual stresses in thermosetting materials: effects of processing parameters [J]. Journal of Composite Materials, 2001, 35(10): 826-849.

DOI: 10.1177/a037322

[6] Yan X. Finite element modeling of curing of epoxy matrix composites [J]. Journal of Applied Polymer Science, 2007, 103 (4): 2310-2319.

DOI: 10.1002/app.24337

[7] Svanberg JM, Holmberg JA. Prediction of shape distortions Part I. FE-implementation of a path dependent constitutive model[J]. Composites Part A: Applied Science and Manufacturing, 2004, 35(6): 711-721.

DOI: 10.1016/j.compositesa.2004.02.005

[8] Behzad T, Sain M. Finite element modeling of polymer curing in natural fiber reinforced composites [J]. Composites Science and Technology, 2007, 67(7-8): 1666-1673.

DOI: 10.1016/j.compscitech.2006.06.021

[9] Cheung A, Yu Y, Pochiraju K. Three-dimensional finite element simulation of curing of polymer composites [J]. Finite Elements in Analysis and Design, 2004, 40(8): 895-912.

DOI: 10.1016/s0168-874x(03)00119-7

[10] Bogetti TA, Gillespie JW. Process-induced stress and deformation in thick-section thermoset composite laminates [J]. Journal of Composite Materials, 1992, 26(5): 626-660.

DOI: 10.1177/002199839202600502

[11] Shin DD, Hahn HT. Compaction of thick composites: simulation and experiment [J]. Polymer Composites, 2004, 25(1): 49-59.

DOI: 10.1002/pc.20004

[12] Svanberg J, Holmberg J. Prediction of shape distortions. Part II. Experimental validation and analysis of boundary conditions [J]. Composites Part A: Applied Science and Manufacturing, 2004, 35(6): 723-734.

DOI: 10.1016/j.compositesa.2004.02.006

[13] Kim YK, White SR. Process-induced stress relaxation analysis of AS4/3501-6 laminate [J]. Journal of Reinforced Plastics and Composites, 1997, 16(1): 2-16.

DOI: 10.1177/073168449701600102

[14] Loos AC, Springer GS. Curing of epoxy matrix composites [J]. Journal of Composite Materials, 1983, 17(2): 135-169.

DOI: 10.1177/002199838301700204

[15] Scott EP, Beck JV. Estimation of thermal properties in epoxy matrix/carbon fiber composite materials [J]. Journal of Composite Materials, 1992, 26(1): 132-149.

DOI: 10.1177/002199839202600109

[16] Tavman I, Akinci H. Transverse thermal conductivity of fiber reinforced polymer composites [J]. International Communications in Heat and Mass Transfer, 2000, 27(2): 253-261.

DOI: 10.1016/s0735-1933(00)00106-8