Finite Element Analysis and Experimental Characterisation of SMC Composite Car Hood Specimens under Complex Loadings
AbstractComposite materials have recently been of particular interest to the automotive industry due to their high strength-to-weight ratio and versatility. Among the different composite materials used in mass-produced vehicles are sheet moulded compound (SMC) composites, which consist of random fibres, making them inexpensive candidates for non-structural applications in future vehicles. In this work, SMC composite materials were prepared with varying fibre orientations and volume fractions (25% and 45%) and subjected to a series of uniaxial tensile and flexural bending tests at a strain rate of 3 × 10−3 s−1. Tensile strength as well as failure strain increased with the increasing fibre volume fraction for the uniaxial tests. Flexural strength was found to also increase with increasing fibre percentage; however, failure displacement was found to decrease. The two material directions studied—longitudinal and transverse—showed superior strength and failure strain/displacement in the transverse direction. The experimental results were then used to create a finite element model to describe the deformation behaviour of SMC composites. Tensile results were first used to create and calibrate the model; then, the model was validated with flexural experimental results. The finite element model closely predicted both SMC volume fraction samples, predicting the failure force and displacement with less than 3.5% error in the lower volume fraction tests, and 6.6% error in the higher volume fraction tests. View Full-Text
Share & Cite This Article
Kelly, J.; Cyr, E.; Mohammadi, M. Finite Element Analysis and Experimental Characterisation of SMC Composite Car Hood Specimens under Complex Loadings. J. Compos. Sci. 2018, 2, 53.
Kelly J, Cyr E, Mohammadi M. Finite Element Analysis and Experimental Characterisation of SMC Composite Car Hood Specimens under Complex Loadings. Journal of Composites Science. 2018; 2(3):53.Chicago/Turabian Style
Kelly, Josh; Cyr, Edward; Mohammadi, Mohsen. 2018. "Finite Element Analysis and Experimental Characterisation of SMC Composite Car Hood Specimens under Complex Loadings." J. Compos. Sci. 2, no. 3: 53.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.