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Time and frequency domain finite ele...

Kenneally, Bernadette.

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Time and frequency domain finite element analysis of vibratory drum interaction with layered earthwork.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Time and frequency domain finite element analysis of vibratory drum interaction with layered earthwork./
Author:	Kenneally, Bernadette.
Description:	128 p.
Notes:	Source: Dissertation Abstracts International, Volume: 76-09(E), Section: B.
Contained By:	Dissertation Abstracts International76-09B(E).
Subject:	Mechanical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3703242
ISBN:	9781321749731

Time and frequency domain finite element analysis of vibratory drum interaction with layered earthwork.
Kenneally, Bernadette.

Time and frequency domain finite element analysis of vibratory drum interaction with layered earthwork. - 128 p.

Source: Dissertation Abstracts International, Volume: 76-09(E), Section: B.

Thesis (Ph.D.)--Colorado School of Mines, 2015.

The earthwork construction industry has been making a necessary shift from quality control/quality assurance (QC/QA) via spot based density and moisture testing to QC/QA via full coverage mechanistic testing (e.g. modulus, stiffness) to allow for performance based assessment of compaction QA/QC. As a result, vibration-based drum measurement of soil properties during compaction, known as Intelligent Compaction (IC) or Continuous Compaction Control (CCC), has gained traction in the US. Using the contact force-drum displacement (F-z) data, coupled with an onboard computer and GPS measurements, the operator can perform real-time QC on 100% of the compacted region, a significant improvement over current spot test methods. For vibratory drums to provide useful, mechanistic measurements, a quantitative understanding of the drum/soil system is needed.

ISBN: 9781321749731Subjects--Topical Terms:

649730
Mechanical engineering.

Time and frequency domain finite element analysis of vibratory drum interaction with layered earthwork.
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100 1 $a Kenneally, Bernadette. $3 3185890
245 1 0 $a Time and frequency domain finite element analysis of vibratory drum interaction with layered earthwork.
300 $a 128 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-09(E), Section: B.
500 $a Advisers: Michael Mooney; Judith Wang.
502 $a Thesis (Ph.D.)--Colorado School of Mines, 2015.
520 $a The earthwork construction industry has been making a necessary shift from quality control/quality assurance (QC/QA) via spot based density and moisture testing to QC/QA via full coverage mechanistic testing (e.g. modulus, stiffness) to allow for performance based assessment of compaction QA/QC. As a result, vibration-based drum measurement of soil properties during compaction, known as Intelligent Compaction (IC) or Continuous Compaction Control (CCC), has gained traction in the US. Using the contact force-drum displacement (F-z) data, coupled with an onboard computer and GPS measurements, the operator can perform real-time QC on 100% of the compacted region, a significant improvement over current spot test methods. For vibratory drums to provide useful, mechanistic measurements, a quantitative understanding of the drum/soil system is needed.
520 $a This research contributes to advancements in Intelligent Compaction by addressing the challenge of modeling the dynamic, non-linear drum/soil system for homogenous and two-layer soil systems. This thesis focuses on time and frequency domain finite element (FE), and analytical modeling to explore the sensitivity of layer parameters such as Young's modulus, material damping, and top layer thickness on drum response. Results from both finite element models are compared with field data and with each other, to gain insight into how the finite element implementations of Rayleigh damping in the time domain, and hysteretic damping in the frequency domain, affect the force-displacement behavior of the drum.
520 $a Additionally, this thesis examines expertise in technology adoption process within state DOT's to gain insights into the combinations of expertise required for successful new technology adoption.
590 $a School code: 0052.
650 4 $a Mechanical engineering. $3 649730
650 4 $a Mechanics. $3 525881
650 4 $a Civil engineering. $3 860360
690 $a 0548
690 $a 0346
690 $a 0543
710 2 $a Colorado School of Mines. $b Mechanical Engineering. $3 2092097
773 0 $t Dissertation Abstracts International $g 76-09B(E).
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791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3703242