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Dynamics cheat sheet

my dynamics notes - 12000.org

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14 Velocity and acceleration of rigid body 3D<br />

14.1 Using Vehicle dynamics notations<br />

F x<br />

Nasser M. Abbasi<br />

3d_1.vsd<br />

May 26, 2011<br />

L<br />

I <br />

N<br />

F z<br />

W<br />

z<br />

r<br />

Linear force<br />

torque<br />

Linear velocity<br />

angular velocity<br />

v <br />

y<br />

<br />

p q V<br />

x<br />

M<br />

F y<br />

U<br />

F <br />

Forces, Torques, linear<br />

velocities and angular velocities<br />

for a general 3D rigid body<br />

I xx I xy I xz<br />

<br />

I yx I yy I yz<br />

linear momentum<br />

U qW rV<br />

F d dt p d dt mvm d dt v m a<br />

V rU pW<br />

W pV qU<br />

U<br />

V<br />

W<br />

p<br />

q<br />

r<br />

F x<br />

F y<br />

F z<br />

L<br />

M<br />

N<br />

d dt H d dt I<br />

Angular momentum<br />

Derivation of this is much more complicated than with<br />

the case of linear motion (F=ma), since m is scalar<br />

there, but for rotation, I is matrix. See next page for the<br />

derivation<br />

58

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