The overhanging beam shown in Figure 2 is subjected to two point loads, P at the free end D and 2P at section B. The I-section shown in Figure 3 with its centroid, y = 252.625 mm and moment of inertia with its centroidal x-axis I= 831.262 x 10° mm“, will be used as cross section of the beam. 2a) Express all your answers in term of P. Use the values of m=3 and n=2. (1) Construct the shear force and bending moment diagrams of the beam. (11) Identify the shear forces at the sections (i) A and (ii) right before C (Figure 2). (i11) Identify the bending moments at the sections (i) B and (1) C (Figure 2). Use P = 293KN

Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter6: Stresses In Beams (advanced Topics)
Section: Chapter Questions
Problem 6.2.13P: A simply supported wooden I-beam with a 12-ft span supports a distributed load of intensity q = 90...
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The overhanging beam shown in Figure 2 is subjected to two point loads, P at the free end D and 2P
at section B. The I-section shown in Figure 3 with its centroid, y = 252.625 mm and moment of
inertia with its centroidal x-axis I= 831.262 x 10° mm“, will be used as cross section of the beam.
2a) Express all your answers in term of P. Use the values of m=3 and n=2.
(i) Construct the shear force and bending moment diagrams of the beam.
(11) Identify the shear forces at the sections (i) A and (i1) right before C (Figure 2).
(iii) Identify the bending moments at the sections (i) B and (11) C (Figure 2).
Use P = 293KN
26)
(i) Calculate the bending stresses at both points p and q (Figure 3) at beam sections B and
C (Figure 2). Identify whether they are under compression or tension. {
(ii) Calculate the maximum bending stress in compression and tension of the entire beam.
(111) Calculate the transverse shear stresses at both points p and r (Figure 3) at beam sections
A and right before C (Figure 2).
(iv) Calculate the maximum transverse shear stress of the entire beam.
Given the allowable tensile and compressive bending stresses are b MPa and h MPa
respectively. And allowable transverse shear stress is a MPa.
(i) Is the beam safe?
(ii) Calculate the maximum value of P the entire beam can resist.
2c)
2P
150
150
56
28
x'
B
C
D
380
30
3 m
11
y = 252. 625
Figure 2
30
198
All dimensions are in mm.
Figure 3
Transcribed Image Text:The overhanging beam shown in Figure 2 is subjected to two point loads, P at the free end D and 2P at section B. The I-section shown in Figure 3 with its centroid, y = 252.625 mm and moment of inertia with its centroidal x-axis I= 831.262 x 10° mm“, will be used as cross section of the beam. 2a) Express all your answers in term of P. Use the values of m=3 and n=2. (i) Construct the shear force and bending moment diagrams of the beam. (11) Identify the shear forces at the sections (i) A and (i1) right before C (Figure 2). (iii) Identify the bending moments at the sections (i) B and (11) C (Figure 2). Use P = 293KN 26) (i) Calculate the bending stresses at both points p and q (Figure 3) at beam sections B and C (Figure 2). Identify whether they are under compression or tension. { (ii) Calculate the maximum bending stress in compression and tension of the entire beam. (111) Calculate the transverse shear stresses at both points p and r (Figure 3) at beam sections A and right before C (Figure 2). (iv) Calculate the maximum transverse shear stress of the entire beam. Given the allowable tensile and compressive bending stresses are b MPa and h MPa respectively. And allowable transverse shear stress is a MPa. (i) Is the beam safe? (ii) Calculate the maximum value of P the entire beam can resist. 2c) 2P 150 150 56 28 x' B C D 380 30 3 m 11 y = 252. 625 Figure 2 30 198 All dimensions are in mm. Figure 3
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