MAE 3 - Midterm Review.pdf - MAELabs UCSD
MAE 3 - Midterm Review.pdf - MAELabs UCSD
MAE 3 - Midterm Review.pdf - MAELabs UCSD
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<strong>MAE</strong> 3 - <strong>Midterm</strong> <strong>Review</strong><br />
Spring 2010
• 3D Visualization<br />
• Power and Energy<br />
• Torques<br />
• Gears<br />
• Transmissions<br />
• Free Body Diagrams<br />
• Design<br />
Overview
3D Visualization
Power and Energy<br />
Units Equation<br />
Best Component<br />
Force Newton (kg*m/s 2 ) = m * a Solenoid<br />
Torque Nm (kg*m 2 /s 2 ) = R x F<br />
Energy Joule (kg*m 2 /s 2 ) = ½mv 2<br />
Work Joule (kg*m 2 /s 2 ) = F * d<br />
Power Watts (kg*m 2 /s 3 ) = W / t<br />
Geared motor<br />
HS/NG motor<br />
----<br />
Rubber Band
R |_<br />
Torque<br />
Torque = R x F = R*f*sin(Θ)<br />
Perpendicular Distance Perpendicular Force<br />
Θ<br />
T = R |_ * F T = R * F |_<br />
F<br />
R R F |_<br />
F
T =torque<br />
r =radius<br />
w = angular velocity<br />
w 1 r 1 =w 2 r 2<br />
T 1 / r 1 =T 2 / r 2<br />
Gears<br />
r 1<br />
r 2<br />
T 1 w 1<br />
T 2 w 2
Transmissions
Free Body Diagrams
Design<br />
• Clear Documentation<br />
• Intermediate Verification<br />
• Varying Methods<br />
• Design For Manufacturability<br />
• Degrees of Freedom
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