Variation simulation and process diagnosis considering in-plane and out-of-plane welding distortion = 면내/면외 용접변형을 고려한 편차 전파 시뮬레이션 및 공정 진단

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The shipbuilding industry has been working hard to solve the accuracy control problem for decades. Welding is mainly used to join two parts in shipyard. Welding generates localized heating within the parts that eventually causes inelastic distortion. Such variations caused by welding accumulate as many parts are joined together, which ultimately affect the final product. These variations are then subjected to correction, which takes a lot of effort, time and cost. As a study on the variation simulation, there has been a study on the compliant assembly. And the influence of the welding distortion that occurs at the joining process has been further studied. Welding distortion affects in-plane/out-of-plane variations. To date, studies related to variation simulation have focused mainly on out-of-plane variations. The variations generated in the in-plane direction is a problem directly related to the margin, which has a great effect on the productivity. Therefore, it is necessary to research the in-plane variation simulation model. In addition, since in-plane/out-of-plane variations affect each other, they must be considered together. This research aims to construct a variation simulation model for in-plane and out-of-plane variations. The geometric analysis was used to derive an equation that indicates the effect of out-of-plane variation on the in-plane variation. And each process was diagnosed using pattern analysis to see how each process contributed to the final assembly variation.
Advisors
Chung, Hyunresearcher정현researcher
Description
한국과학기술원 :기계공학과,
Publisher
한국과학기술원
Issue Date
2017
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학과, 2017.8,[v, 56 p. :]

Keywords

Ship block assembly▼aTolerance analysis▼aWelding distortion▼aMethod of influence coefficient▼aVariation simulation▼aIn-plane distortion▼aOut-of-plane distortion▼aDiagnosis; 선박 블록 조립▼a공차해석▼a용접변형▼a영향계수법▼a편차 전파 시뮬레이션▼a면내 변형▼a면외 변형▼a공정진단

URI
http://hdl.handle.net/10203/242886
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=718548&flag=dissertation
Appears in Collection
ME-Theses_Master(석사논문)
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