An extruded polymer beam is subjected to a bending moment M. The length of the beam is L = 500 mm. The cross-sectional dimensions of the beam are b₁ = 38 mm, d₁ = 82 mm, b₂ = 23 mm, d₂ = 23 mm, and a = 7.5 mm. For this material, the allowable tensile bending stress is 14 MPa, and the allowable compressive bending stress is 12 MPa. Determine the largest moment M that can be applied as shown to the beam. b₂ a M d₁ B L N-m | A Answer: M= d₂ b₁

An extruded polymer beam is subjected to a bending moment M. The length of the beam is L = 500 mm. The cross-sectional dimensions of the beam are b₁ = 38 mm, d₁ = 82 mm, b₂ = 23 mm, d₂ = 23 mm, and a = 7.5 mm. For this material, the allowable tensile bending stress is 14 MPa, and the allowable compressive bending stress is 12 MPa. Determine the largest moment M that can be applied as shown to the beam. b₂ a M d₁ B L N-m | A Answer: M= d₂ b₁

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter6: Introduction To Mechanical Properties

Section: Chapter Questions

Problem 26CQ

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Properties of materials

A property of a material describes its characteristics and distinguishes it from the others. The material properties are described it in terms of its hardness, color, appearances, and so on. The material properties generally depend on the type of material, or whether it is a metal or an alloy. There are different kinds of material properties such as mechanical properties, thermal properties, physical properties, and chemical properties. Chemical properties describe the material in terms of a chemical change. The mechanical properties come into existence when the material is acted upon by an external load. Thermal properties are associated with the temperature of the material and specific heat.

Question

An extruded polymer beam is subjected to a bending moment M. The length of the beam is L = 500 mm. The cross-sectional
dimensions of the beam are b₁ = 38 mm, d₁ = 82 mm, b₂ = 23 mm, d₂ = 23 mm, and a = 7.5 mm. For this material, the allowable tensile
bending stress is 14 MPa, and the allowable compressive bending stress is 12 MPa. Determine the largest moment M that can be
applied as shown to the beam.
b₂
a
M
d₁
B
L
N-m
| A
Answer:
M=
d₂
b₁

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