Mechanics of Materials (MindTap Course List)
9th Edition
ISBN: 9781337093347
Author: Barry J. Goodno, James M. Gere
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 2.7.5P
Determine the strain energy per unit volume (units of psi) and the strain energy per unit weight (units of in ) that can be stored in each or the materials listed in the accompanying table, assuming that the material is stressed to the proportional limit.
| DATA FOR PROBLEM 2.7-5 | |||
| Material | Weight Density (lb/in3) | Modulus of Elasticity (ksi) | Proportional Limit (psi) |
| Mild sleel | 0.284 | 30,000 | 36,000 |
| Tool steel | 0.284 | 30,000 | 75,000 |
| Aluminum | 0.0984 | 10,500 | 60,000 |
| Rubber (soft) | 0.0405 | 0.300 | 300 |
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Use the engineering stress strain diagram provided below to answer parts (A) to
(H) below (the stress-strain diagram bas already been drawn for you):
stress strain diagram
400
350 0
300 0
250 0
200 0
150.0
100.0
50.0
O 05
0 1
0.15
strain
A. Determine the tensile strength of this alloy.
B. show the elastic, plastic and total strain on the diagram
stress (Mpa)
2) Use the engineering stress strain diagram provided below to answer parts (A) to
(H) below (the stress-strain diagram has already been drawn for you):
stress strain diagram
400
350 0
300 0
250 0
200 0
150.0
100.0
50.0
00
0 05
01
0. 15
strain
A. Determine the tensile strength of this alloy.
B. show the clastic, plastic and total strain on the diagram
stress (Mpa)
Please annotate the attached to highlight the different phases of the stress/strain graph for 0.15% carbon steel.
From the attached graph, calculate the following:
1-modulus of elasticity
2-tensile strength
3-the ductility in % of elongation
4- yield strength at a strain offset of 0.002
Chapter 2 Solutions
Mechanics of Materials (MindTap Course List)
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