Answered: a) What are the principal stresses?…

a) What are the principal stresses? Sketch the principal stress element and mark its values. b) What are the stresses in a-b directions ? Sketch the stress element and mark its values

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter42: Heat Gains And Heat Losses In Structures

Section: Chapter Questions

Problem 10RQ: If the R-value of a construction material is 2.0, what isits U-value? A. 0.25 B. 0 50 C. 1.0 D. 2.0

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Question

Figure Q2 shows the strain gauges positions and values at point A on a surface of a loaded structure. The strain readings in directions of a, b and x are +400m, -100m and +200m respectively. The structure has properties as following; E= 205 GPa, v = 0.32

a) What are the principal stresses? Sketch the principal stress element and mark its values.

b) What are the stresses in a-b directions ? Sketch the stress element and mark its values

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