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Tolerance analysis of compliant meta...

Chung, Hyun.

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Tolerance analysis of compliant metal plate assemblies considering welding distortion.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Tolerance analysis of compliant metal plate assemblies considering welding distortion./
Author:	Chung, Hyun.
Description:	204 p.
Notes:	Advisers: Dale G. Karr; Thomas Lamb.
Contained By:	Dissertation Abstracts International67-07B.
Subject:	Applied Mechanics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3224854
ISBN:	9780542786501

Tolerance analysis of compliant metal plate assemblies considering welding distortion.
Chung, Hyun.

Tolerance analysis of compliant metal plate assemblies considering welding distortion. - 204 p.

Advisers: Dale G. Karr; Thomas Lamb.

Thesis (Ph.D.)--University of Michigan, 2006.

The ship block construction process consists mostly of cutting, welding and assembling of compliant steel plates and sections. Compared to the ship's total dimension (on the order of a hundred meters), the required accuracy between the interface of adjacent blocks (on the order of millimeters) is about one in one hundred thousand. Block joint alignment thus requires relatively very high accuracy. Misalignment and nonconformance between the building blocks being erected will adversely impact the total productivity of a shipyard by consuming one of the most critical resources in the shipyard.

ISBN: 9780542786501Subjects--Topical Terms:

1018410
Applied Mechanics.

Tolerance analysis of compliant metal plate assemblies considering welding distortion.
LDR:03145nam 2200325 a 45 001 972563
005 20110927
008 110927s2006 eng d
020 $a 9780542786501
035 $a (UMI)AAI3224854
035 $a AAI3224854
040 $a UMI $c UMI
100 1 $a Chung, Hyun. $3 1296569
245 1 0 $a Tolerance analysis of compliant metal plate assemblies considering welding distortion.
300 $a 204 p.
500 $a Advisers: Dale G. Karr; Thomas Lamb.
500 $a Source: Dissertation Abstracts International, Volume: 67-07, Section: B, page: 4037.
502 $a Thesis (Ph.D.)--University of Michigan, 2006.
520 $a The ship block construction process consists mostly of cutting, welding and assembling of compliant steel plates and sections. Compared to the ship's total dimension (on the order of a hundred meters), the required accuracy between the interface of adjacent blocks (on the order of millimeters) is about one in one hundred thousand. Block joint alignment thus requires relatively very high accuracy. Misalignment and nonconformance between the building blocks being erected will adversely impact the total productivity of a shipyard by consuming one of the most critical resources in the shipyard.
520 $a Distortion caused by the welding process is heavily dependent on the plate's boundary conditions such as clamping of the plates being welded and the sequence of assembly can change these boundary conditions. Also, the plate part variations can be varied through the assembly sequences due to its compliancy. The assembly sequence when designed adequately can positively affect the distortions and deformations during the assembly process without costly mitigation processes.
520 $a In this dissertation, both tolerance analysis and welding distortion simulation are vigorously investigated to develop a new tolerance analysis method for ship block joining. The mechanistic variation simulation, which statistically combines the sensitivity matrix with root sum square method to determine mean and standard deviation without Monte-Carlo simulation, is used for the variation simulation and equivalent loading method based on the inherent strain for the welding distortion prediction. The method combines B-Spline finite element analysis with empirical data to determine welding distortion without computationally intensive three-dimensional nonlinear finite element analysis. A Modified Method of Influential Coefficients is developed for variation simulation of ship block assemblies considering welding distortion. For validation purposes, an example ship block which consists of two base plates, four stiffeners, and one web frame is tested by the Modified Method of Influential Coefficients and the results compare favorably with that of Monte-Carlo Simulation.
590 $a School code: 0127.
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Engineering, Marine and Ocean. $3 1019064
650 4 $a Engineering, Mechanical. $3 783786
690 $a 0346
690 $a 0547
690 $a 0548
710 2 0 $a University of Michigan. $3 777416
773 0 $t Dissertation Abstracts International $g 67-07B.
790 $a 0127
790 1 0 $a Karr, Dale G., $e advisor
790 1 0 $a Lamb, Thomas, $e advisor
791 $a Ph.D.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3224854