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#1
03-20-2010, 12:48 PM
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Pasta Truss Bridge....
As you may or may not know I've been back to school for almost a year now...studying mechanical engineering technology at the Penn State York campus.
As an assignment for my statics class, we have to build a pasta truss and test it to see who's can handle the most force before failing... After a little research I chose to build the standard K truss..let's hope it preforms well. My construction technique is quite simple...Fettuccine pasta and CA glue...lots of pins - reminds me of the old stick and tissue models that I use to build....Anyway, this is a lot of fun...I'll post more pictures once I'm finished. Wish me luck. 
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#2
03-20-2010, 01:36 PM
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My oldest son had to make one for his physics class two years ago. We used fetucine and stacked alternating short spans. It was about 15 inches long and 3 inches wide. It held the weight required, but his teacher saved it rather than testing it to destruction like all of the others. His teacher still has it and uses it as an example for the classes each year. It was constructed something like this diagram
 I don't know about you, but thin CA was the ticket when we were building. We also reinforced joints after construction with an extra application of CA.
__________________
Quiet in the corner
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#3
03-20-2010, 01:49 PM
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The US Military Academy has some software for designing truss bridges and building them with file folders.
Designing and Building File-Folder Bridges There might be some infomation that could be helpful to you.
__________________
~Doug~ AC010505 EAMUS CATULI! Audere est Facere THFC 19**-20** R.I.P. it up, Tear it up, Have a Ball
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#5
03-20-2010, 04:11 PM
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We tried the cooked pasta, too. Even when it was completely dried, it was way too brittle. The uncooked pasta was much stronger. It would have been very cool to cook it, shape it and let it dry into whatever shape we wanted. I wanted to take the cooked pasta and weave it into a fabric and then use several layers of the fabric.Maybe, the challenge should be to build a bacon bridge.Mmmmm... bacon.
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Quiet in the corner
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#6
03-20-2010, 04:12 PM
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Cooked Pasta...
Quote:
Cooked Pasta = Suspension Bridge (?) Why not use fresh pasta (uncooked) to construct a model bridge using true arch support? Add joint fillets for extra strength. Let it dry completely (250 dF oven) before using CA to glue the joints. +Gil Last edited by Gil; 03-20-2010 at 04:27 PM.
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#7
03-20-2010, 05:03 PM
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You can always use uncooked pasta but wet one. It will bend and after it is dry it will regain the same type of properties it had before.
__________________
Transliteration of 2D printing into multidimensional dreams? Models: Fiddler's Green models.
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