1977•Review of Scientific InstrumentsRequires access

Double-pendulum vibration isolator or seismograph

Paul Lorrain

Abstract

The device consists of a platform suspended by three chains and supporting a short light pendulum whose bob is submerged in an oil bath resting on the floor. The transmissibility curve for the platform is comparable to those of much more elaborate isolators. The transmissibility decreases as the inverse of the frequency squared. One isolator of this type has been in constant use for the past three years.

About this research paper

What this paper is about

Why it matters

OpenAlex reports 4 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Isolator, Transmissibility (structural dynamics), Vibration isolation, Pendulum, Vibration, Acoustics, Seismometer, Constant (computer programming)