Ceiling-mounted bicycle lift structural analysis
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| - | Part # 001: Ceiling Bracket | + | ==Part # 001: Ceiling Bracket== |
| - | [[Image:Team1-Bracket.jpg|300px]] | + | {| class="wikitable" border="0" |
| - | + | |- | |
| - | '''Material''': Carbon steel<br /> | + | ! Pictures !! Calculations !! |
| + | |- align="left" | ||
| + | | [[Image:Team1-Bracket.jpg|300px]] || '''Material''': Carbon steel<br /> | ||
E = 202,700 N/mm<sup>2</sup><br /> | E = 202,700 N/mm<sup>2</sup><br /> | ||
Yield strength = 350 Mpa<br /> | Yield strength = 350 Mpa<br /> | ||
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P/2 = 111.2 N<br /> | P/2 = 111.2 N<br /> | ||
P/4 = 55.6 N<br /> | P/4 = 55.6 N<br /> | ||
| - | + | |- align="left" | |
| - | '''Bending along X-axis'''<br /> | + | | [[Image:Team1-FBD-Bracket.JPG|300px]] || '''Bending along X-axis'''<br /> |
Distance between support forces: 200 mm<br /> | Distance between support forces: 200 mm<br /> | ||
Vertical centroid: -7.57 mm (measure from top surface)<br /> | Vertical centroid: -7.57 mm (measure from top surface)<br /> | ||
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Maximum x-bending stress: 9.47 N/mm<sup>2</sup> = 9.47 Mpa<br /> | Maximum x-bending stress: 9.47 N/mm<sup>2</sup> = 9.47 Mpa<br /> | ||
| - | + | |- align="left" | |
| - | Bending along Z-axis<br /> | + | | [[Image:Team1-Stress-Bracket.JPG|300px]] || Bending along Z-axis<br /> |
Distance between support forces: 70 mm<br /> | Distance between support forces: 70 mm<br /> | ||
Vertical centroid: -.066 mm (measure from top surface)<br /> | Vertical centroid: -.066 mm (measure from top surface)<br /> | ||
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Maximum net bending stress: 10.1 Mpa<br /> | Maximum net bending stress: 10.1 Mpa<br /> | ||
| - | + | |} | |
'''Stress Concentration Factor'''<br /> | '''Stress Concentration Factor'''<br /> | ||
h = 1.22 mm (sheet thickness)<br /> | h = 1.22 mm (sheet thickness)<br /> | ||
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K = 1.7 - From table A-15-12 of (Shigley, Mechanical Engineering Design)<br /> | K = 1.7 - From table A-15-12 of (Shigley, Mechanical Engineering Design)<br /> | ||
<br /> | <br /> | ||
| - | <big>Actual Maximum Stress = 17.1 Mpa<br /></big> | + | '''<big>Actual Maximum Stress = 17.1 Mpa<br /></big>''' |
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Revision as of 00:25, 8 March 2007
Part # 001: Ceiling Bracket
| Pictures | Calculations | |
|---|---|---|
 | Material: Carbon steel E = 202,700 N/mm2 | |
 | Bending along X-axis Distance between support forces: 200 mm | |
 | Bending along Z-axis Distance between support forces: 70 mm |
Stress Concentration Factor
h = 1.22 mm (sheet thickness)
w = 50 mm (section width)
d = 6 mm (hole size)
d/w = .12 d/h = 5
K = 1.7 - From table A-15-12 of (Shigley, Mechanical Engineering Design)
Actual Maximum Stress = 17.1 Mpa
