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Unformatted text preview: ISE 2204 ---Introduction to Manufacturing Processes Spring 2008 Homework Assignment #1 Solution key Problem 1: Question 2.3 in textbook. (6 points) 1A : 1- =- = l l l l l e , there is linear relationship between l and l . ln l l = ε , the relationship between l and l is natural log. We know linear relationship is increasing (decreasing) faster than natural log curve (as shown in the figure below). It is true for both tensile strain and compressive strain. Problem 2: Question 2.41 in textbook. (6 points) 2A : as listed in the table below. Figure advantages limitations a Perfectly elastic under the stress limit No permanent deformation, sudden fracture after the stress limit b Perfect plastic deformation at the same stress level No elastic recovery c Have both finite elastic module and perfect plastic deformation Elastic recovery is finite. d Rigid, linearly plastic deformation Requires an increasing stress level e ε Compressive strain Tensile strain l l to undergo further strain, No elastic recovery e Have both finite elastic module and plastic...
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This note was uploaded on 04/09/2008 for the course ISE 2204 taught by Professor Rhsturges during the Spring '08 term at Virginia Tech.
- Spring '08