PRECISION MECHANICS / EXHIBIT 029

Seismic Isolation Platform

Inside a suspended scientific instrument: eleven subsystems, multiple isolation stages, and the physics of keeping the ground from speaking.

CONCEPT INSTRUMENTQUIETFRAME S–29Interactive cutaway and assembly

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VIEWPORT / FIELD MODELCOMPLETE ASSEMBLY

INITIALISING1063 PARTS

Drag to orbit · Scroll to zoom · Select a componentILLUSTRATIVE / NOT TO SCALE

PENDULUM RESONANCE TEXTBOOK—Hz

f₀ = √(g / L) / 2π

MOTION TRANSMISSIBILITY ILLUSTRATIVE—×

Single-degree-of-freedom model

RESIDUAL MOTION ILLUSTRATIVE—µm

x_out = T × x_ground

EQUIVALENT STIFFNESS TEXTBOOK—N/m

k = mg / L

01 / THE IDEA

Building silence, one stage at a time.

A precision experiment cannot stop the planet from vibrating. It can isolate its sensitive payload with long pendulums, mechanical filters and feedback. This interactive exhibit reveals the load path, suspension hierarchy, optical metrology and an intentionally simplified vibration model.

EXHIBIT CONTROLS

Instrument console

Explore the structure. Every listed component belongs to a real conceptual subsystem.

01 VIEW PARAMETERS

Cutaway depth0%

Exploded separation0%

Technical lighting70%

Educational annotationsProcess animation

02 COMPONENT INSPECTION

Select subsystemNamed component

Assembly / select a partSelect a componentEngineering anatomy

03 VISIBLE SUBSYSTEMS

04 OPERATING PHYSICS

All parameters are illustrative inputs, not facility specifications. The model assumes a linear single-axis pendulum and steady sinusoidal excitation.

Pendulum length1.60 m

Ground vibration2.20 Hz

Ground amplitude200 µm

Damping ratio0.08

Actuator current0.80 A

INDEPENDENT CHECKk = m(2πf₀)²

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Independent stiffness calculation

Actuator force, illustrative: —

05 GUIDED ASSEMBLY

Parts install in subsystem dependency order, from the foundation to protective services.

Not started0 / 1063

OFFLINE • ORIGINAL PROCEDURAL 3D

∑EXPLAINED / ENGINEERING METHODSThe science behind the suspensionSHOW EQUATIONS & ASSUMPTIONS ＋

What is real science?

Genuine principles: pendulum restoring acceleration, isolation above resonance, finite damping, accelerometer feedback and optical displacement sensing. The physics panel uses standard single-degree-of-freedom base-excitation equations, not a numerical model of this multi-stage installation.

Engineering-inspired: suspension wires, bolted flanges, access platforms, piezo supports, protective acoustic enclosure, metrology racks and servo actuators are constructed as a fictional integrated system.

Simplified education: stages are depicted with ideal connections and exaggerated motions; optical rays and force indicators visualise concepts only. Speculative: the exact arrangement, dimensions, performance and controller design have not been validated.

Textbook equations used

f₀ = (1 / 2π) √(g / L)

r = f / f₀

T = √[1 + (2ζr)²] / √[(1 − r²)² + (2ζr)²]

x_out = T · x_ground

k = mg / L ; k_check = m(2πf₀)²

F = K_i · I

Symbols: g = 9.81 m/s² (textbook); L = illustrative pendulum length; ζ = illustrative damping ratio; f = illustrative drive frequency; m = illustrative 250 kg test mass; K_i = illustrative 0.8 N/A.

Illustrative design, not affiliated with any real institution or manufacturer. Animations are explanatory, not validated scientific simulations. No gravity-shielding is claimed: this is isolation from mechanical vibration.

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