Answered: M †10 mm 10 mm 30 mm 10 mm ! 30 mm L–…

Engineering

Mechanical Engineering

M †10 mm 10 mm 30 mm 10 mm ! 30 mm L– PROBLEM 5.8-10

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter7: Analysis Of Stress And Strain

Section: Chapter Questions

Problem 7.7.8P

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Question

A laminated plastic beam of square cross section is built up by gluing
together three strips, each 10 mm x 30 mm in cross section (see figure). The beam has a total weight of 3.6 N and is simply supported with span length L =360 mm.Considering the weight of the beam (q), calculate the maximum
permissible CCW moment M that may be placed at the right support.
a. The allowable shear stress in the gluedjoints is 0.3 MPa.
b. The allowable bending stress in the plastic is 8 MPa.

M
†10 mm
10 mm 30 mm
10 mm
!
30 mm
L–
PROBLEM 5.8-10

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