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What is the relation between critical stress and slenderness ratio?(a) critical stress is directly proportional toslenderness ratio(b) critical stress is inversely proportional toslenderness ratio(c) critical stress is square of slenderness ratio(d) critical stress is cube of slenderness ratioThe question was posed to me during an interview.My doubt stems from Elastic Buckling of Slender & Built-up Compression Members topic in portion Design of Compression Members of Design of Steel Structures

Answer»

Correct CHOICE is (B) critical stress is INVERSELY PROPORTIONAL toslenderness RATIO

The explanation: fcr= Pcr/Ag = π^2E/λ^2, critical stress is inversely proportional toslenderness ratio of column and very large values can be obtained by using L/r → 0 .



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