truss bridge 3d model

3D model of a high-performance simple supported triangular truss bridge for FFF 3D printing, PLA filament, University academic coursework design, ultra-light and high load-bearing, one-piece integral molding (no assembly allowed), no support material needed for printing (fits laboratory no-support printing parameters). Strictly comply with the 150mm clear span requirement, the two ends of the bridge are flat support structures, can stand independently stably without any external support, the support end width is 10mm to ensure stable placement on the table. A 10mm wide load hanger groove is reserved at the absolute midpoint of the bridge (the center of the 150mm span), the upper and lower chords at the hanger position are thickened to 3mm, and the surrounding truss units are encrypted to prevent local fracture under load. The triangular truss adopts an optimal 60° included angle design, the upper and lower straight chords are symmetrically arranged, the web bars are inclined at 60° to the chords, the chord di