| || Punch problem for initially stressed neo hookean solids
Author : Ali, M. Mukhtar;Parrey, Nabi;Ali, Rashid
Source : Defence Science Journal ; Vol:51(1) ; 2001 ; pp 93-99
Subject : 53 Applied Physics
Keywords : Neo-Hookean Solids;Launching pads;Conical punch;Incremental stress;Strain;Incremental deformation theory
Abstract : The paper reports the indentation of a semi-infinite, initially stressed elastic medium under the action of an axisymmetric rigid punch pressing the medium normally. Th~ problem has been considered within the framework of incremental deformation theory for neo-Hookean solids. Using the Hankel's transformation, the distributions of incremental stress and strain have been obtained. Indentations by a flat-ended c and a conical punch have been obtained as special cases and these effects have been studied numerically and presented in the form of curves. This problem has defence application as many launching pads and firing machines have some neo-Hookean solids as buffer which bear enormous impact or punch during the action of the machine.