Force P on plastic bar - Inner plastic bar -Outer cast iron bar PROBLEM 1.7-4 (a) What is the required initial length L, of the plastic bar so that. ilcn it is compressed by some force P. the final length of bar and tube are equal to length L and, at the same time, the gap beten plastic bar and cast iron tube is closed? (b) Compare initial and final volumes for the plastic bar. Assume that E= 170 GPa. E, = 2.1 GPa. v = 0.3. and = 0.4.

Force P on plastic bar - Inner plastic bar -Outer cast iron bar PROBLEM 1.7-4 (a) What is the required initial length L, of the plastic bar so that. ilcn it is compressed by some force P. the final length of bar and tube are equal to length L and, at the same time, the gap beten plastic bar and cast iron tube is closed? (b) Compare initial and final volumes for the plastic bar. Assume that E= 170 GPa. E, = 2.1 GPa. v = 0.3. and = 0.4.

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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Concept explainers

Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.

Question

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A square plastic bar (length Lp, side dimensions p 5193 mm) is inserted inside a hollow,square, cast iron tube (length Lc 5 400 mm, sidesc 5 200 mm, and thickness tc 5 3 mm).

Force P on
plastic bar
- Inner plastic
bar
Outer cast iron
bar
PROBLEM 1.7-4
(a) What is the required initial length L, of the plastic bar so that.
ilcn it is compressed by some force P. the final length of bar and
tube are equal to length L and, at the same time, the gap beten
plastic bar and cast iron tube is closed?
(b) Compare initial and final volumes for the plastic bar.
Assume that E= 170 GPa. E, = 2.1 GPa. v = 0.3. and = 0.4.

A square plastic bar (length Lpside dimension sp-193 mm) is
inserted inside a hollow. square cast iron tube (length Lc = 400
mm. side s.=200 mm, and thickness t=3 mm).
Cast iron tube
= 3 mm
Plastic bar
Sp = 193 mm
Se = 200 mm

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