Lecture 20 sect 9.8

# Lecture 20 sect 9.8 - xy A I xydA =-âˆ xy x y o o I I x y A...

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ME 221 Lecture 20 1 ME 221 Statics Lecture #20 Sections 9.7 - 9.9

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ME 221 Lecture 20 2 Homework #7 Chapter 4 problems: Chapter 9 problems: Due Today
ME 221 Lecture 20 3 Homework #8 Chapter 9 problems: Chapter 5 problems: Additional information to be on Angel Due Friday, October 24

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ME 221 Lecture 20 4 Product Moment of Inertia Basic section with two axes of symmetry x y Composite sections - product parallel axis theorem

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Unformatted text preview: xy A I xydA = -âˆ« xy x y o o I I x y A â€² â€² =-ME 221 Lecture 20 5 Mohrâ€™s Circle for Principal Inertia +I xy-I xy I xx , I yy I yy x I xx I xy x â€¢ draw point ( I xx , I xy ) and the circle ( I xx +I yy )/2 â€¢ draw circle center ( I xx + I yy )/2 x I MAX I MIN 2 Î² â€¢ use geometry to find I MAX , I MIN and Angles in Mohrâ€™s circle are twice those in the section analyzed. ME 221 Lecture 20 6 More Chapter 9 Examples...
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## This note was uploaded on 07/25/2008 for the course ME 221 taught by Professor Buch during the Summer '08 term at Michigan State University.

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Lecture 20 sect 9.8 - xy A I xydA =-âˆ xy x y o o I I x y A...

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