No. 3.The assembly shown in Figure No. 3consists of a hollow steel [E = 200 GPa]tube (1) with an outside diameter of 60mm and a wall thickness of 5 mm, a solid40 mm diameter aluminum [E = 70 GPa](2)(3)rod (2), and a solid 30 mm diameterCaluminum rod (3). The member lengthsare L1 = 2 000 mm, L2 = 1 200 mm, and L3= 800 mm. The following loads act on theassembly: P = 150 kN, Q = 80 kN, and R =Figure No. 3115 kN. Determine (a) the change inlength of steel tube (1). (b) the deflection ofjoint D with respect to the fixed support at A.

Given data: E1=200 GPaE2=70 GPaE3=70 GPa

No. 3. The assembly shown in Figure No. 3 consists of a hollow steel [E = 200 GPa] tube (1) with an outside diameter of 60 mm and a wall thickness of 5 mm, a solid 40 mm diameter aluminum [E = 70 GPa] (2) (3) rod (2), and a solid 30 mm diameter D aluminum rod (3). The member lengths are L1 = 2 000 mm, L2 = 1 200 mm, and L3

No. 3. The assembly shown in Figure No. 3 consists of a hollow steel [E = 200 GPa] tube (1) with an outside diameter of 60 mm and a wall thickness of 5 mm, a solid 40 mm diameter aluminum [E = 70 GPa] (2) (3) rod (2), and a solid 30 mm diameter D aluminum rod (3). The member lengths are L1 = 2 000 mm, L2 = 1 200 mm, and L3

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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Alloys

An alloy is an admixture of two or more metals or a metal and a non-metal. Since ancient times, man has been using alloys. Alloying helps to retain the properties of the parent matter, such as hardness, strength, toughness, ductility and is corrosion-resistant. Copper alloys such as brass have antimicrobial properties that help to fight against (Coronavirus disease 2019) COVID-19 and other hospital-acquired infections. Some common alloys are brass, bronze, solder steel, etc. Most alloys have a lower melting point than their constituents. This is due to the presence of a nonmetal as one of the constituents that behaves as an impurity and restricts the raise of melting point.

Question

No. 3.
The assembly shown in Figure No. 3
consists of a hollow steel [E = 200 GPa]
tube (1) with an outside diameter of 60
mm and a wall thickness of 5 mm, a solid
40 mm diameter aluminum [E = 70 GPa]
(2)
(3)
rod (2), and a solid 30 mm diameter
C
aluminum rod (3). The member lengths
are L1 = 2 000 mm, L2 = 1 200 mm, and L3
= 800 mm. The following loads act on the
assembly: P = 150 kN, Q = 80 kN, and R =
Figure No. 3
115 kN. Determine (a) the change in
length of steel tube (1). (b) the deflection of
joint D with respect to the fixed support at A.

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