2) Results of Analysis
3) Bridge Design Replicate
4) Hand Analysis Correspond to Bridge Designer
For the hand analysis to correspond with the Bridge Designer, the length of the membranes need to be scaled equally. In Bridge Designer, the length is contained and scaled to 2 inches per graphical unit, while on the hand drawing we can draw membranes at any sizes. Therefore, Bridge Designer needs to scale their bridge so the forces correlate with the values calculated.
5) Bridge Designer for Knex Bridge
6) Final Analysis
According to the Knex joints test page, it shows that it requires more force to remove a membrane from a 180 gusset plate as the number of membranes added to the gusset increases. Using the given average pull-out force for the different types of modes, such as one, two or three attached membranes, we can compare it with our Knex truss bridge. The online Bridge Designer has already computed the values of forces applied on each membrane of our bridge; so now we only need to identify the membranes close or far from the maximum limit of force. Than we could adjust those certain membranes to build a better cost to weight ratio bridge. For example, if a membrane if suffering force close to its maximum capacity, we can add more membranes in that region, such as to the gusset plates to make a stronger bridge. Similarly, if a membrane is suffering very few amounts of force, we could take the piece out and reduce the estimated bridge cost.
No comments:
Post a Comment