Introduction of laminated composites in the weight sensitive branches of engineering has opened a new avenue of application for their high specific stiffness and good weathering resistance. In spite of these advantages laminated composites are vulnerable to sudden impact due to their low transverse shear capacity than other conventional construction materials like steel and concrete. In most of the situations these impacts are oblique. In the cases of oblique impact due sliding of the impactor friction generates. Present paper aims to carry out dynamic analysis of composite hypar shell roof for clamped boundary condition under oblique impact stricken at different oblique angles. Effect of dry friction between the impactor and shell surface is considered in the present formulation. Time histories of contact force and deflection are presented graphically and critically analysed to give some conclusion of engineering significance at the end.
Composite Hypar shell Oblique impact
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Hertz H (1881) On the contact of elastic solids. Journal fur die reine und angewandte Mathematik 92:156–171Google Scholar
Tan TM, Sun CT (1983) Use of statical indentation laws in the impact analysis of laminated composite plate. J Appl Mech 52:6–12CrossRefGoogle Scholar
Sun CT, Chen JK (1985) On the impact of initially stressed laminates. J Compos Mater 19:490–503CrossRefGoogle Scholar
Rickerby DG, Macmillan NH (1980) On the oblique impact of solid sphere against a rigid plastic solid. Int J Mech Sci 22:491–494CrossRefGoogle Scholar
Shu D, Stronge WJ, Yu TX (1992) Oblique impact at the tip of a cantilever. Int J Impact Eng 12(1):37–47CrossRefGoogle Scholar
Tu CY, Chao CC (1999) Three-dimensional contact dynamics of laminated plates: Part 2. Oblique Impact Friction Compos Part B Eng 30:23–41CrossRefGoogle Scholar
Sahoo S, Chakravorty D (2004) Finite element bending behaviour of composite hypar shells with various edge conditions. J Strain Anal Eng Des 39(5):499–513CrossRefGoogle Scholar
Das Neogi S, Karmakar A, Chakravorty D (2011) Impact response of simply supported skewed hypar shell roofs by finite element. J Reinf Plast Compos 30(21):1795–1805CrossRefGoogle Scholar
Qatu MS, Leissa AW (1991) Natural frequencies for cantilevered doubly-curved laminated composite shallow shells. Comput Struct 17(3):227–256CrossRefGoogle Scholar