For rigid-body motion, the strains will vanish. Under these conditions, integrate the strain displacement relations

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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For rigid-body motion, the strains will vanish. Under these conditions, integrate the strain displacement relations
ди,
er
ar
due
1
Ur +
(7.6.1)
ep = -
1/1 ди,
due
Ug
ere =
2 r d0
ar
(7.6.1)
to show that the most general form of a rigid-body motion displacement field in polar coordinates is given by:
Up* = a sin 0 +b cos 0
Ug* = a cos 0 – b sin 0 + cr
where a, b, c are constants. Also show that this result is consistent with the Cartesian form given by relation (2.2.9)
u* = uo - Wzy
(2.2.9)
v* = Vo + WzX
Transcribed Image Text:For rigid-body motion, the strains will vanish. Under these conditions, integrate the strain displacement relations ди, er ar due 1 Ur + (7.6.1) ep = - 1/1 ди, due Ug ere = 2 r d0 ar (7.6.1) to show that the most general form of a rigid-body motion displacement field in polar coordinates is given by: Up* = a sin 0 +b cos 0 Ug* = a cos 0 – b sin 0 + cr where a, b, c are constants. Also show that this result is consistent with the Cartesian form given by relation (2.2.9) u* = uo - Wzy (2.2.9) v* = Vo + WzX
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