The light rigid bar ABCD shown below is pinned at B and connected to twovertical rods. Assuming that the bar was initially horizontal and the rodsstress-free, determine the stress in each rod after the load P = 20 kN is applied.steelL=1.5 mA=300 mm22 m-E= 200 GPaBDAluminunL=2 mP = 20 kN- 1mA= 500 mm2E= 70 GPa

Solution:- Taking moment about point B, ∑MB=0 2Pal+Pst=2×200002σal ×Aal+σst×Ast=400002σal…

Answered: steel L=1.5 m A=300 mm2 2 m E= 200 GPa…

Engineering

Civil Engineering

steel L=1.5 m A=300 mm2 2 m E= 200 GPa C B D Aluminun P = 20 kN L=2 m k-1m A= 500 mm2 E= 70 GPa

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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Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.

Question

The light rigid bar ABCD shown below is pinned at B and connected to two
vertical rods. Assuming that the bar was initially horizontal and the rods
stress-free, determine the stress in each rod after the load P = 20 kN is applied.
steel
L=1.5 m
A=300 mm2
2 m-
E= 200 GPa
B
D
Aluminun
L=2 m
P = 20 kN
- 1m
A= 500 mm2
E= 70 GPa

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