Fink truss equilibrium problem with Autodesk force analysis

aerograce · Sep 11, 2013

The Fink truss is my model. In analyzing this structure, autodesk doesn't give me the desired result. Look at point F, it doesn't reach equilibrium. I don't know why, but shall we continue to use this app in analyzing truss structures?

Screenshot of a truss analysis app showing a triangular roof truss with nine labelled downward point loads F1 to F9 at the top and joint nodes A to L, with pink reaction arrows at the supports and at joint C and the apex.

Screenshot of a truss analysis app showing a Fink-style truss with labelled joints A to L, downward point loads F1 to F9 of 1 to 2 lb, pin and roller supports at A and J, and pink reaction-force arrows near joint F.

Screenshot of a truss analysis app showing a triangular Fink-style truss with nodes labelled A to L, blue downward point loads F1 to F9 and pink reaction labels at the top and middle.

Screenshot of a truss analysis app showing a Fink-style truss with labelled joints A to L, downward point loads F1 to F9, two support reactions of 6.71 lb, and member lines drawn between joints.

SteamKing · Sep 12, 2013

It's kind of hard to follow your problem, since you jump right into the middle of it.

There are free truss analyzers which can be downloaded off the net. I would check you truss with one of these.
This is a pretty good package: http://www.grapesoftware.mb.ca/

aerograce · Sep 12, 2013

Thanks for your advice. Just by lookijg at point F, it doesn't reach equilibrium. But maybe I am wrong, so I want to verify it

Fink truss equilibrium problem with Autodesk force analysis

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