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Manufacturing Jedi
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Join Date: Jun 2007
Location: Mexico
Posts: 95
Good Answers: 1

Plastic engineering problem

11/23/2007 6:01 PM

This was a problem was in the final exam of my class:

A part design call for a 135 N (30.375 lbs) load to be suspended from the center of a beam 25mm (0.985 in) tall, 6.5mm (0.256in) thick and 165mm(6.5in) long simply supported at its ends. The part specification requires that the beam not sag more than 15mm (0.591in) after 30 days continuous loading. The designer whishes to use HYTREL 6356 for this part.

a) Calculate the bending stress

b) Will the material meet the sag requirement?

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This discussion was "closed" on 11/30/2007 3:49 PM. No new comments are allowed.
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Join Date: Mar 2007
Location: City of Light
Posts: 3943
Good Answers: 183
#1

Re: Plastic engineering problem

11/25/2007 11:57 AM

The big plastics suppliers as Dupont or bayer have very detailed manuals for the design of parts using theit products. Look via Google at those sheets you will find every thing a,d even a bit more.
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