Breadboard Deflection Estimator

Estimate center deflection, self-weight sag, and fundamental frequency for optical breadboards under load.

Breadboard & Load
Deflection Results
Center deflection (δ)
From applied load
17.01µm
Self-weight deflection (δ_sw)
From board self-weight
16.27µm
Total deflection
33.28µm
Dynamic & Structural
Fundamental frequency (f₀)
Based on total deflection
86.40Hz
Board self-weight
4.778kg
Load-to-weight ratio
F / (board weight)
1.046
Area moment of inertia (I)
52028.9mm⁴
Assessment
Consider thicker board or honeycomb. Moderate fundamental frequency (86.40 Hz).
Abridged Optics — Breadboard Deflection Estimator v1.0Assumes uniform distributed load on a rectangular cross-section. Real point loads from posts may produce different deflection patterns.

All information, equations, and calculations have been compiled and verified to the best of our ability. For mission-critical applications, we recommend independent verification of all values. If you find an error, please let us know.