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Conceptual design and scaled experimental validation of an actively damped carbon tie rods support system for the stabilization of future particle collider superstructures
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10.1063/1.4789783
/content/aip/journal/rsi/84/2/10.1063/1.4789783
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/2/10.1063/1.4789783

Figures

Image of FIG. 1.
FIG. 1.

Superstructure supporting one QD0 in the CLIC_ILD detector: (a) drawing; (b) first four resonances.

Image of FIG. 2.
FIG. 2.

Compliance of the free end of the tube superstructure in the vertical direction.

Image of FIG. 3.
FIG. 3.

Superstructure supporting one QD0 in the CLIC_ILD detector, reinforced with a network of four carbon tie rods: (a) drawing; (b) first four resonances.

Image of FIG. 4.
FIG. 4.

Open loop transfer function between the force exerted by a vertical tendon on the superstructure and its vertical displacement at the same location for two controllers: IFF and IFF filtered.

Image of FIG. 5.
FIG. 5.

Time response of the free end of the superstructure in the vertical direction, excited at the same location: (a) impulse response; (b) step response.

Image of FIG. 6.
FIG. 6.

Scaled test bench: (a) drawing; (b) first four eigen modes.

Image of FIG. 7.
FIG. 7.

Scaled test bench with carbon rods: (a) drawing; (b) first four eigen modes.

Image of FIG. 8.
FIG. 8.

Compliance of the scaled test bench at the free end of the tube in the vertical direction.

Image of FIG. 9.
FIG. 9.

Open loop transfer function between the force exerted by a vertical tendon on the scaled tube and its vertical displacement at the same location for two controllers: IFF and IFF filtered.

Image of FIG. 10.
FIG. 10.

(a) Picture of the experimental set-up. (b) Active tendon.

Image of FIG. 11.
FIG. 11.

Measured compliance of the end of the tube in the vertical direction.

Image of FIG. 12.
FIG. 12.

Time history of the vertical displacement of the free end of the tube, excited by a sinusoïdal extension of the actuators, with an amplitude of 30 μm and a frequency of 30 Hz.

Tables

Generic image for table
Table I.

Characteristics of the main elements of the CLIC_ILD superstructure, along with the hypothesis used in the finite element model.

Generic image for table
Table II.

Number of tie rods and corresponding dimensions to obtain a stiffness of .

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/content/aip/journal/rsi/84/2/10.1063/1.4789783
2013-02-04
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Conceptual design and scaled experimental validation of an actively damped carbon tie rods support system for the stabilization of future particle collider superstructures
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/2/10.1063/1.4789783
10.1063/1.4789783
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