Truss Analysis Using Weldments
We designed and built a truss bridge (out of popsicle sticks) based on calculations predicting the presence of zero-force members, and verified these calculations through practical testing and simulation. I wired and soldered connections for the project and wrote code to integrate and utilize a load cell for accurate force measurements. Separately, I modeled the truss in SolidWorks using precise dimensions from our calculations, employing Weldments to convert sketches into thin beams. I defined the bottom corner joints as a fixed point and a roller joint, designated each member as a truss, and conducted a static study. The exported beam force data closely matched the original calculations, confirming the accuracy of the design and analysis. All work presented in this portfolio reflects my individual contributions.
Fully constructed bridge out of popsicle sticks for reference.
Dimensionally accurate sketch of our bridge truss.
Edited weldments pipe to create a truss of thin beams.
Set up of the static study. Bottom corner joints are defined as a fixed point and a roller joint, and 10lbf is applied to the top center joint.
Average forces in each beam.
Axial forces in each beam. These were exported to an Excel spreadsheet.
Comparison of all calculations with the generated spreadsheet. They all nearly matched perfectly.
Initial 3d model of our bridge.