A rigid steel bar is supported by three rods, as shown. There is no strain in the rods before the load Pis applied. After load Pis applied, the normal strain in rod (2) is 840 µin./in. Assume initial rod lengths of L1 = 120 in. and L2 = 71 in. Determine (a) the normal strain in rods (1). (b) the normal strain in rods (1) if there is a 0.032 in. gap in the connections between the rigid bar and rods (1) at joints A and C before the load is applied. (c) the normal strain in rods (1) if there is a 0.032 in. gap in the connection between the rigid bar and rod (2) at joint B before the load is applied. (1) (1) (2) L Ripid bar Answers: (a) ɛ1 = i pin./in. (b) ɛ = pin./in. (c) E1 = pin./in.

A rigid steel bar is supported by three rods, as shown. There is no strain in the rods before the load Pis applied. After load Pis applied, the normal strain in rod (2) is 840 µin./in. Assume initial rod lengths of L1 = 120 in. and L2 = 71 in. Determine (a) the normal strain in rods (1). (b) the normal strain in rods (1) if there is a 0.032 in. gap in the connections between the rigid bar and rods (1) at joints A and C before the load is applied. (c) the normal strain in rods (1) if there is a 0.032 in. gap in the connection between the rigid bar and rod (2) at joint B before the load is applied. (1) (1) (2) L Ripid bar Answers: (a) ɛ1 = i pin./in. (b) ɛ = pin./in. (c) E1 = pin./in.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter7: Analysis Of Stress And Strain

Section: Chapter Questions

Problem 7.7.4P: An element of material in plain strain is subjected to strains x = 0.0015, , y . = -0.0002, and xy =...

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