Concept review: average normal strain and average shear strain

Purpose

This optional learning activity will help you review the concepts of normal strain and shear strain. (It does not assess problem-solving ability, however.)

• Module 02 Objective 1 Define elongation, normal strain, and shear strain.
• Module 02 Objective 2 Use appropriate symbols to represent deformation, normal strain, and shear strain.
• Module 02 Objective 3 Determine and report elongation, normal strain, and shear strain values with appropriate SI and US customary units.
• Module 02 Objective 4 Distinguish between elongation and contraction of axially-loaded structural members.
• Module 02 Objective 5 Distinguish between positive and negative shear strain.

These Module Objectives support the following course learning outcome(s):

• calculate and illustrate the normal and shear stress components, normal and shear strains, and deformation of standard idealized elements such as shafts, beams, columns, and thin-wall pressure vessels due to axial, torsional, and flexural loads, pressurization, and/or changes in temperature.

Task

For each question, select the best answer. Discussion and collaboration is encouraged!
Chegg and similar "homework help" websites are prohibited, due to numerous errors that misinform and confuse students.
The correct answers will be made available after you submit your first attempt. If you would like clarification, ask Jenny.
Learn the concepts so that you are able to answer all the questions correctly. Attempt this learning activity as many times as you would like.

Grading Criteria

This optional learning activity is not graded.

You will receive the most benefit from this learning activity if you discuss the questions and answers with classmates.