640_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

# 640_Mechanics - 07Ch07.qxd 634 1:24 PM Page 634 CHAPTER 7 Analysis of Stress and Strain FOR up âx ây âx1 ây âx 2 1644 10 ‹ u p1 up2 A

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Unformatted text preview: 07Ch07.qxd 9/27/08 634 1:24 PM Page 634 CHAPTER 7 Analysis of Stress and Strain FOR up âx + ây âx1 ây âx + 2 1644 * 10 ‹ u p1 up2 A MAXIMUM SHEAR STRAINS 76.0°: 2 gxy 2 sin 2u gmax 2 a ây âx 2 456 * 10 6 166.0° â1 76.0° â2 cos 2u + 6 732 * 10 1644 * 10 6 ; ; gmax us1 gmax us2 gmin âaver gxy 2 b 2 6 911 * 10 2 b +a 6 up1 45° 911 * 10 us1 121.0° 6 90° 911 * 10 âx + ây 2 ; 31.0° 6 ; 1190 * 10 Problem 7.7-15 During a test of an airplane wing, the strain gage readings from a 45° rosette (see figure) are as follows: gage A, 520 * 10 6; gage B, 360 * 10 6; and gage C, 80 * 10 6 . Determine the principal strains and maximum shear strains, and show them on sketches of properly oriented elements. 6 y 45° B C 45° A O Probs. 7.7-15 and 7.7-16 x ...
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## This note was uploaded on 12/22/2011 for the course MEEG 310 taught by Professor Staff during the Fall '11 term at University of Delaware.

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