 | | Re: My Pictures From Brickfest —Thomas Avery
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| | | (...) That's because it's a truss :-) A truss is a structure composed of triangles (very simple explaination). A truss is very stiff because its geometry causes all members to be loaded in compression or tension. Theoretically, the members see no (...) (22 years ago, 26-Jul-02, to lugnet.robotics)
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| | | | | Re: My Pictures From Brickfest —Rob Doucette
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| | | | (...) In practice, given the length of the members in Doug's model I'd expect them to behave as slender columns when loaded (by leaning on it as opposed to the weight of the pick n place mechanism which didn't seem to add much load). -Rob. [looking (...) (22 years ago, 26-Jul-02, to lugnet.robotics)
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| | | | | | Re: My Pictures From Brickfest —Thomas Avery
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| | | | (...) And those would be the compression members of the truss. (...) At just a glance (i.e. no proper analysis), I imagine that when you "leaned" on it, you'll have a few members in tension somewhere in the structure. The structure will deflect very (...) (22 years ago, 26-Jul-02, to lugnet.robotics)
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| | | | | | Re: My Pictures From Brickfest —Rob Doucette
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| | | | (...) I'm guessing the members would delaminate (the plates capping the double beams would separate) especially if the loading is cyclical. I still think a long column will describe the behaviour more so than a truss because of the length. I don't (...) (22 years ago, 26-Jul-02, to lugnet.robotics)
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| | | | | | Re: My Pictures From Brickfest —Thomas Avery
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| | | | (...) You're comparing apples to oranges here. Within a truss, you will have members in compression. Column analysis (i.e. Euler buckling, and the like) can be applied to those memebers. To say that it behaves more like a slender column than a truss (...) (22 years ago, 26-Jul-02, to lugnet.robotics)
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