Finite Element Model of Trimming CFRP Aerospace Composites

Abstract:

Carbon Fiber Reinforced Plastics (CFRP) exhibit superior characteristics such as high specific strength, high specific modulus, fatigue strength and endurance. During the manufacture of components from CFRP, it is usually necessary to carry out a post-machining step. Generally, after curing process, the parts will be trimmed in order to meet the required tolerances. Due to the heterogeneous composition and anisotropy of composite materials, machining procedures can damage the material in ways that directly affect its mechanical properties. Currently a costly try and error approach is employed to determine the optimal process conditions. Thus, this study focused on numerical modelling of machining CFRP composites using cross-nick router. A set of machining tests were performed in order to validate the accuracy of the model. Good agreement between simulation and experimental results show the validity of the model in handling real-field problems. The proposed numerical modeling technique can be used as an input in the process planning and decision making levels.

• Periodical: Applied Mechanics and Materials (Volume 695)
• Pages: 163-166
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.695.163
• Online since: November 2014
• Authors: Raja Izamshah*, M. Akmal, Mohd Amran Md Ali, Mohd Hadzley, Mohd Shahir Kasim, Mohd Asyadi Azam, Mohd Amri Sulaiman
• Keywords: CFRP, Finite Element, Trimming

References

[1] R Izamshah, JPT Mo, S Ding, Hybrid deflection prediction on machining thin-wall monolithic aerospace components, J. of Eng Manufacture Vol. 4 (2012) 592-605.

DOI: 10.1177/0954405411425443

[2] Venu Gopala Rao G, Mahajan P, Bhatnagar N. Micro-mechanical modeling of machining of FRP composites – cutting force analysis. Compos. Sci. Tech. 67 (2007) 579-585.

DOI: 10.1016/j.compscitech.2006.08.010

[3] Ramesh MV, Seetharamu KN, Ganesan N, Shivkumar MS. Analysis of machining of FRPs using FEM. Int J Mach Tools Manu 38 (1998) 31–49.

DOI: 10.1016/s0890-6955(98)00008-x

[4] Mkaddem A, Demirci I, El Mansori M. A micro–macro combined approach using FEM for modelling of machining of FRP composites: cutting forces analysis. Compos Sci Technol (2008); 68: 3123–7.

DOI: 10.1016/j.compscitech.2008.07.009

[5] Nayak D, Bhatnagar N, Mahajan P. Machining studies of UD-FRP composites part 2: finite element analysis. Machining Sci Technol (2005); 9: 503–28.

DOI: 10.1080/10910340500398183

[6] Venu Gopala Rao G, Mahajan P, Bhatnagar N. Micro-mechanical modeling of machining of FRP composites-cutting force analysis. Compos Sci Technol (2007); 67: 579–93.

DOI: 10.1016/j.compscitech.2006.08.010

[7] R. Izamshah R. A, John P. T Mo, Songlin D., Finite Element Analysis Of Machining Thin-Wall Parts, Journal Key Engineering Materials Vol. 458 (2011) 283-288.

DOI: 10.4028/www.scientific.net/kem.458.283

[8] Ramesh MV, Seetharamu KN, Ganesan N, Shivkumar MS. Analysis of machining of FRPs using FEM. Int J Mach Tools Manuf (1998); 38: 1531–49.

DOI: 10.1016/s0890-6955(98)00008-x

[9] Mahdi M, Zhang L. An adaptive three-dimensional finite element algorithm for the orthogonal cutting of composite materials. J Mater Process Technol (2001); 113: 368–72.

DOI: 10.1016/s0924-0136(01)00676-8