A high-density polyethylene [E = 135 ksi and a = 69 x 10-6/°F] block (1) is positioned in a fixture. The block is 2.1 in, by 2.2 in. by 36 in. long. At room temperature, a gap of 0.1 in. exists between the block and the rigid support at B. Assume L₁- 36 in and A = 0.1 in. Determine: (a) the normal stressa in block (1) caused by a temperature increase of 70°F. (b) the normal strain e in block (1) at the increased temperature. Answerrs: (a) a = (b) = i 277.05 A L₁ psi. pc.

A high-density polyethylene [E = 135 ksi and a = 69 x 10-6/°F] block (1) is positioned in a fixture. The block is 2.1 in, by 2.2 in. by 36 in. long. At room temperature, a gap of 0.1 in. exists between the block and the rigid support at B. Assume L₁- 36 in and A = 0.1 in. Determine: (a) the normal stressa in block (1) caused by a temperature increase of 70°F. (b) the normal strain e in block (1) at the increased temperature. Answerrs: (a) a = (b) = i 277.05 A L₁ psi. pc.

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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Question

A high-density polyethylene [E = 135 ksi and a = 69 x 10-6/°F) block (1) is positioned in a fixture. The block is 2.1 in, by 2.2 in.
by 36 in. long. At room temperature, a gap of 0.1 in. exists between the block and the rigid support at B. Assume L₁- 36 in and A = 0.1
in. Determine:
(a) the normal stressa in block (1) caused by a temperature increase of 70°F.
(b) the normal strain e in block (1) at the increased temperature.
Answers:
(a) a =
(b) = i
B
277.05
A
LA
psi.
pc.

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P = 300N ، a=140mm , b=240mm , d=26mm
Provide solution and explain also with steps