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Bridge Span Stress & Failure Simulator

Matter.js Physics

Structural Configurations

Interactive Construction

Material & Geometry

Beam Depth / Thickness 1.2 m

Joint Material Yield Strength Medium

Why can't we build long flat bridges?
Bending moments grow exponentially with length ($M \propto L^2$). Under gravity, top fibers compress (red) while bottom fibers stretch in tension (blue). Without vertical piers or triangulation, tensile stress quickly exceeds yield limits!

Max Deflection 0.0 cm

Safety Factor (FoS) 2.45

Max Internal Stress 142 MPa

Live Forces & Diagnostics

Test Vehicle Mass 40 Tons

Stress Force Heatmap

Tension (Blue) Neutral Compression (Red)

Joint Telemetry

Node / Joint	Type	Stress (MPa)	State
Joint #1 (Left Pier)	Fixed	42 MPa	OK
Joint #4 (Midspan)	Beam Joint	285 MPa	HIGH
Joint #8 (Right Pier)	Fixed	38 MPa	OK

Physics Diagnostics

Span Length: 100.0 m

Pier Count: 0

Cable Stays: 0

Truss Members: 0

Moments ($M_{max}$): 12,500 kNm

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Structural Mechanics Export Report