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What is apparent modulus of elasticity?(a) ratio of average strain carried by plate to average stress(b) ratio of average stress carried by plate to average strain(c) product of average strain carried by plate to average stress(d) product of average stress carried by plate to average strainThis question was posed to me in an interview for internship.I want to ask this question from Behaviour and Ultimate Strength of Plates and Possible Failure Modes topic in portion Plastic and Local Buckling Behaviour of Steel of Design of Steel Structures

Answer»

Correct OPTION is (b) ratio of AVERAGE stress carried by plate to average strain

To explain I would say: Elastic post-buckling stiffness is measured in terms of apparent modulus of elasticity, E*. It is the ratio of average stress carried by plate to average strain. In most of the cases, the value of E* is in the range 0.408 – 0.5 E and MAY be approximately TAKEN as 0.5E.



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