A rigid steel bar is supported by three rods, as shown. There is no strain in the rods before the load P is applied. Aft

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A Rigid Steel Bar Is Supported By Three Rods As Shown There Is No Strain In The Rods Before The Load P Is Applied Aft 1 (602.45 KiB) Viewed 11 times

A rigid steel bar is supported by three rods, as shown. There is no strain in the rods before the load P is applied. After load P is applied, the normal strain in rod (2) is 920 pin./in. Assume initial rod lengths of L₁ = 150 in. and L₂ = 75 in. Determine (a) the normal strain in rods (1). (b) the normal strain in rods (1) if there is a 0.052 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 0.052 in. gap in the connection between the rigid bar and rod (2) at joint B before the load is applied. (1) (a) E₁ = L₂ Answers: (b) ₁ = (c) E1 = Rigid bar i i (2) P (1) L₂ uin./in. uin./in. uin./in.