SW11. For the truss shown in figure 1, determinethe stress in members AC and BD in Pascal.The cross-sectional area of each member is900 mm^2BF不(13mHEG30 kN70 kNAyHy4 panels at 4 m = 16 mFigure 12. Weight W is hanged from the pin at A. ABand AC are pined to the support at B and C.Cross sectional area of the cables are AB =800 mm^2 and 400 mm^2 for AC.Neglecting the weight of the bars. Calculatethe maximum safe value of W in Newtons ifthe normal stress in AB is limited to 11O MPaand that in AC to 120 MPa.40AFigure 2

Given: TO determine stress in member AC and BD TO determine the load W

Answered: 1. For the truss shown in figure 1,…

Engineering

Mechanical Engineering

1. For the truss shown in figure 1, determine the stress in members AC and BD in Pascal.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter11: Columns

Section: Chapter Questions

Problem 11.9.30P

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Concept explainers

Combined Loading

Any functioning component, such as machine parts, structural members, pressure vessels, and so on, are all under the influence of more than one force. When anybody is under the influence of more than one force such as shear forces, bending moments, axial forces, torsion, and so on, then such body is said to be under combined loading. A very practical example of combined loading is the crankshaft of an internal combustion engine (IC engine). The crankshaft of the IC engine is under high rpm, which is caused due to the torsional forces. Due to the presence of piston, counterbalances, and internal imbalances, the crankshaft experiences lateral forces and due to the rise in temperature, the crankshaft undergoes thermal expansion, which pulls the crankshaft along the axial direction and lateral direction. The presence of unbalanced loads along the periphery of the crankshaft also induces a bending moment.

Question

SW1
1. For the truss shown in figure 1, determine
the stress in members AC and BD in Pascal.
The cross-sectional area of each member is
900 mm^2
B
F
不
(1
3m
H
E
G
30 kN
70 kN
Ay
Hy
4 panels at 4 m = 16 m
Figure 1
2. Weight W is hanged from the pin at A. AB
and AC are pined to the support at B and C.
Cross sectional area of the cables are AB =
800 mm^2 and 400 mm^2 for AC.
Neglecting the weight of the bars. Calculate
the maximum safe value of W in Newtons if
the normal stress in AB is limited to 11O MPa
and that in AC to 120 MPa.
40
A
Figure 2

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