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DCC Bridge
Anonymous1767087834
03-16 07:56
Model Name
truss bridge 3d model
Tags
architecture
3d printing
realistic
Prompt
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 diameter is 2.5mm, the web bar diameter is 1.8mm, the triangular unit side length is 22mm, and the overall height of the bridge is 30mm (balanced rigidity and light weight). The whole structure has no overhang, no closed cavity, smooth bar connection, no sharp corners (to avoid stress concentration), the total weight of the model (including adhesion layer and no redundant structure) is controlled at 7-8g (≤10g), which is suitable for slicing software weight verification. The model is in STL format, optimized for FFF 3D printing process, the bar structure is continuous and unbroken, the layer bonding performance is good, adapted to Weedoo 3D printer parameters (printing speed 50mm/s, temperature 220℃, layer thickness 0.1mm), the print time is about 1-2 hours (reasonable laboratory printing time). The structural force is transmitted along the axial direction of the bar, giving full play to the tensile and compressive properties of PLA, and the anti-bending and anti-deformation ability of the whole bridge is excellent.
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Anonymous1767087834
Anonymous1767087834