An extruded polymer beam is subjected to a bending moment M. The length of the beam is L= 620 mm. The cross-sectional dimensionsof the beam are b = 37 mm, d1 = 80 mm, b2 = 22 mm, d2 = 22 mm, and a = 7.5 mm. For this material, the allowable tensile bending stress is12 MPa, and the allowable compressive bending stress is 11 MPa. Determine the largest moment M that can be applied as shown to thebearn.b,aMd2d| 4Bb1Answer:M =iN-m

Answered: 1Pa. Determine the largest moment M…

Engineering

Civil Engineering

1Pa. Determine the largest moment M that can be applied as shown to the

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

System of Forces

A force is an external influence or agent that changes the state of a system. According to Newton's second law, the force applied to a body is proportional to the change in momentum of a body. Hence, whenever a force is applied to a body, its momentum changes. If the body is at rest, under the action of force, its state of rest changes to motion. In other words, the magnitude of the momentum of the body changes from zero to a measurable value. Similarly, if the body possesses some initial velocity, it has some associated momentum, the effect of force can cause the body to halt or come to rest, that is, the momentum reduces to zero.

Question

An extruded polymer beam is subjected to a bending moment M. The length of the beam is L= 620 mm. The cross-sectional dimensions
of the beam are b = 37 mm, d1 = 80 mm, b2 = 22 mm, d2 = 22 mm, and a = 7.5 mm. For this material, the allowable tensile bending stress is
12 MPa, and the allowable compressive bending stress is 11 MPa. Determine the largest moment M that can be applied as shown to the
bearn.
b,
a
M
d2
d
| 4
B
b1
Answer:
M =
i
N-m

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