Numerical investigation of damage area due to different shape of impactors at low velocity impact of GFRP laminate. (2017)

• Record Type: Journal Article
• Authors: Rawat, Prashant; Singh, K.K.; Singh, Nand Kishore
• Is Part Of: Materials today. Volume 4:Number 8(2017)
• Page Start: 8731
• Page End: 8738
• Publication Date: 2017
• Subjects: GFRP -- Impactor shape -- Fiber damage -- LS-DYNA; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2017.07.222
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: In this paper numerical investigation of damage area caused by different shapes of impactor is studied. Quasi-isotropic symmetric glass fiber reinforced polymer (GFRP) laminate have been used with zero bending extension coupling. Four different shape of impactors used for analysis are: (i) Hemispherical headed cylindrical impactor, (ii) Spherical impactor, (iii) Oval shaped impactor and (iv) Flat base cylindrical impactor. These impactors having mass of 5.23 kg and impact velocity 3 m/sec. FEM analysis is done using commercially available software LS-DYNA. On impacting with energy of 23.5 J, oval headed impactor lead to minimum damage area of 394.61 mm 2 and form maximum fiber breakage pyramid structure on the back face of GFRP laminate. On the other hand, flat base cylindrical impactor causes no fiber damage and causes maximum damage area of 1211.27 mm 2 .