Transcription of Section 16: Neutral Axis and Parallel Axis Theorem - CNX
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Section 16: Neutral Axis and Parallel Axis Theorem - CNX
Section 16: Neutral Axis and Parallel Axis Theorem16-1 Geometry of deformationGeometry of deformation We will consider the deformation of an ideal, isotropic prismaticbeam the cross Section is symmetric about y-axis All parts of the beam that were originally aligned with the longitudinal axis bend into circular arcs plane sections of the beam remain plane and perpendicular to the beam s curved axisbeam s curved axisNote: we will take these directions for M0to be positive However they arepositive. However, they are in the opposite direction to our convention (Beam 7), and we must remember to account for this at the : HornseyNeutral axis16-3 From: BENDING DEFORMATION OF A STRAIGHT MEMBERA STRAIGHT MEMBER A Neutral surfaceis where longitudinal fibers of the material will not undergo a change in : BENDING DEFORMATION OF A STRAIGHT MEMBERA STRAIGHT MEMBER Thus, we make the following axisx(within Neutral surface) axis x(within Neutral surface) does not experience any change in length2.
beambeam s’s curved axis curved axis Note: we will take these directions for M 0 to be positive However they arepositive. However, they are in the opposite direction to our convention (Beam 7), and we must remember to ... 20010 328106 4 16-20 University of Auckland z,3 12
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