Posted on March 6, 2010.
The most effective bridge truss type to make spaghetti for physics class? The objective of this project is to build a truss bridge model of spaghetti that can hold a load of 2500 grams for a duration of 40.0 cm.
I ask you guys who know their stuff on the bridges, the bridge truss design would be more effective?
If the answer is correct about other spaghetti is low under "couple", some things about his suggestions for clarification. What he refers to is called flex "time, the couple would be a load that affects one strand (think that the key does a bolt), bending moment would be a load that pushes / pulls perpendicular to the shore. If you design a trellis, your bridge should experience any of these, like a real mesh carrying only axial loads in all members - the tension / tension or compression.
You should know that in such situations it is often construction is most important. It does not depend on the effectiveness of your trellis is whether your joints are not very well built, it will not reach its potential.
Your gateway does not have to be very long (40 cm is about 16 inches), so it will be difficult to do something that is complex and has lots of members. You also want something that does not rely heavily on the action beam (the weaknesses mentioned in the first paragraph). More attention is how spaghetti is thin. Thinner members, and / or more members, loop compression at low load. This means that you want your compression members to be short, and you want some of them, as you can get by with.
Search Whipple Pratt Truss and Warren Truss, these use a large number of members diagonally to eliminate bending forces. Make sure to draw your design in advance and have a plan to complete construction before even beginning construction. Once again I stress, do a job very good while building your deck.
Well, what you could do is try to analyze what follows is based on the static
http://en.wikipedia.org/wiki/Truss_bridg ...
Produce a metric that is based on "vehicles" vs. "quantity of matter". You can determine the amount of material requires a bundle of how much force is required to bear (it will not tell you exactly how to use real spaghetti until you quantify the strength of spaghetti, but ... He will give you an arbitrary metric that defines the structural efficiency for each type).
Of course, much depends on the type of load is on deck ... a point load will produce more torque than the load distributed 40cm - the effects of torque will be greater than the loading in the analysis that spaghetti is not very strong couple because of its length and individual "part" weak - the structure could gradually do if the load is not distributed on the couple and made a bundle spaghetti ... say smacking individual spaghetti until the whole beam becomes too low and all else fails ...
I was looking for a winner of the contest pst.
He was an arch bridge.
Due to the weakness of spaghetti compression. Rough guess, Max 10Length to 1Dia. about 20 mm max
He used a half spoke bicycle wheel design.
It has the advantage of using spaghetti tensile strength to spread the load over the entire structure. Also creating a bridge pre - stressed. (A bridge highlighted against the applied load planed)
He won.
It eventually failed because of an unbalanced load to fill the resulting torsion described by others above.
Thus, a basis of "broad" If the load is unbalanced evenly distribute the load a little better reducing torsional loads.
Please recommend finding the strength of your hardware.
Tensile (p.
