bibo:abstract
  • The present study has numerically predicted both the flow-induced and thermally-induced residual stresses and birefringence in injection or injection/compression molded center-gated disks. Analysis system for entire molding process was developed based on an appropriate physical modeling including a nonlinear viscoelastic fluid model, stress-optical law, a linear viscoelastic solid model, free volume theory for density relaxation phenomena and a photoviscoelasticity and so on. Part Ⅰ presents physical modeling and typical numerical analysis results of residual stresses and birefringence in the injection molded center-gated disk. Thermal residual stress was found to be extensional near the center, compressive near the surface and tend to become toward tensional at the surface. A double-hump profile was obtained across the thickness in birefringence distribution: nonzero birefringence is found to be thermally induced, the outer peak is due to the shear flow and subsequent stress relaxation during the filling stage and the inner peak is due to the additional shear flow and stress relaxation during the packing stage. Predicted birefringence including both the flow -induced and thermally-induced one becomes quite similar to the experimental one. (rdf:langString) (en)
dcterms:alternative
  • Modeling and basic results (xsd:string)
nlon:biographicalNote
  • 권태헌, 회원, 포항공과대학교 기계공학과, thkwon (rdf:langString) (postech.ac.kr)
  • 윤경환, 회원, 단국대학교 기계공학과 (xsd:string)
  • 이영복, 포항공과대학교 기계공학과 (xsd:string)
nlon:classificationNumberOfNLK
  • 550.5 (xsd:string)
nlon:containedIn
dc:creator
  • 권태헌 (xsd:string)
  • 윤경환 (xsd:string)
  • 이영복 (xsd:string)
dcterms:creator
nlon:datePublished
  • 2021-01-30T23:37:12 (xsd:dateTime)
dcterms:description
  • Numerical analysis of residual stresses and birefringence in injection/compression molded center-gated disks, Modeling and basic results (xsd:string)
bibframe:extent
  • 26 cm (xsd:string)
  • p. 2342-2354 (xsd:string)
dcterms:isPartOf
nlon:issuedYear
  • 2002 (xsd:string)
nlon:itemNumberOfNLK
  • 대446 (xsd:string)
rdfs:label
  • 사출/압축 성형 center-gated 디스크에서의 잔류 응력과 복굴절의 수치 해석 . / 이영복, 권태헌,윤경환 (xsd:string)
dcterms:language
nlon:remainderOfTitle
  • 모델링 및 기본 결과 (xsd:string)
dc:subject
  • Birefringence (xsd:string)
  • Free volume theory (xsd:string)
  • Injection molding (xsd:string)
  • Injection/compression molding (xsd:string)
  • Photoviscoelasticity (xsd:string)
  • Residual stress (xsd:string)
  • Viscoelasticity (xsd:string)
  • 광점탄성 (xsd:string)
  • 복굴절 (xsd:string)
  • 사출성형 (xsd:string)
  • 사출압축성형 (xsd:string)
  • 자유체적이론 (xsd:string)
  • 잔류응력 (xsd:string)
  • 점탄성 (xsd:string)
dcterms:title
  • 사출/압축 성형 center-gated 디스크에서의 잔류 응력과 복굴절의 수치 해석 (xsd:string)
rdf:type
bibo:volume
  • 1 (xsd:string)
nlon:volumeOfNLK
  • 26(11) (xsd:string)