Which of the following statements best Stephanie Redfern Saylor Mechanics

Question 15 / 40: Which of the following statements best describes the difference between elastic and plastic deformation?

A Elastic deformation causes strain oscillations; plastic deformation does not.

B Elastic deformation occurs immediately upon application of a stress and reverses upon removal
of the stress; plastic deformation is permanent.

C Elastic deformation occurs immediately upon application of a stress; plastic deformation occurs
slowly.

D Plastic deformation occurs immediately upon application of a stress and reverses upon removal
of the stress; elastic deformation is permanent.

E Elastic deformation results in dissipation of energy as heat; plastic deformation conserves
energy.

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Explanation:

You may think of elastic behavior as like the behavior of an ideal spring. You may think of plastic behavior as similar to the behavior of clay. However, both plastic and elastic deformations are idealized behaviors.

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Mechanics I ME102

Author:

Stephanie Redfern

The Saylor Foundation

USA

Access: Public Instant Grading

Attribution: Stephanie Redfern, Ranjeet (Ron) Agarwala, and Dr. Steve Gibbs. Mechanics I. The Saylor Academy 2014, http://www.saylor.org/courses/me102/

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