A simply supported beam has a span of 4 m, a rectangular cross section 100 mm wide by 200 mm deep and carries a uniformly distributed load of intensity w N/mm over its complete span. A rectangular strain gauge rosette positioned at mid-span on the upper surface of the beam and in the vertical plane of symmetry recorded the following values of strain: e =-900 x 10-6, ep = -200 × 10-6, ec =+300 × 10-6 If Young's modulus E is 200000 N/mm² calculate the value of Poisson's ratio, the principal stresses at the point and hence the load intensity. Ans. v=0.33, o1 =0, 0=-180 N/mm², w=60 N/mm.

A simply supported beam has a span of 4 m, a rectangular cross section 100 mm wide by 200 mm deep and carries a uniformly distributed load of intensity w N/mm over its complete span. A rectangular strain gauge rosette positioned at mid-span on the upper surface of the beam and in the vertical plane of symmetry recorded the following values of strain: e =-900 x 10-6, ep = -200 × 10-6, ec =+300 × 10-6 If Young's modulus E is 200000 N/mm² calculate the value of Poisson's ratio, the principal stresses at the point and hence the load intensity. Ans. v=0.33, o1 =0, 0=-180 N/mm², w=60 N/mm.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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