한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제22권11호
  • /
  • Pages.210-217
  • /
  • 2005
  • /
  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

SL 광조형 공정에서 고전적층이론을 적용한 곡률 변형 예측

Prediction of Curl Distortion using Classical Lamination Theory in Stereolithography

  • 김기대 (대구가톨릭대학교 기계자동차공학부) ;
  • 이재곤 (대구가톨릭대학교 기계자동차공학부)
  • 발행 : 2005.11.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A curl distortion induced by shrinkage during stereolithography polymerization process is analyzed with the classical lamination theory. Test parts of different layer thickness and part thickness are manufactured and their deformations are measured with CMM. Curl distortion is generated by the differential shrinkage of the layers, where the total shrinkage includes the shrinkages due to solidification and the change of temperature. It is shown that the curl distortion increases exponentially with decreasing the total thickness of the part, whose smaller layer thickness induces larger curl distortion. It is verified that only a part of the total shrinkage plays a role in generating the curl distortion.

키워드

참고문헌

  1. Jacobs, P. F., 'Rapid Prototyping & Manufacturing-Fundamentals of StereoLithography,' SME, pp. 38-48, pp. 249-284, 1992
  2. Narahara, H., Tanaka, F., Kishinami, T., Igarashi, S. and Saito, K., 'Reaction heat effects on initial linear shrinkage and deformation in stereolithography,' Rapid Prototyping Journal, Vol. 5, No. 3, pp. 120-128, 1999 https://doi.org/10.1108/13552549910278946
  3. Park, S. R. and Park, D. S., 'Forming Error and Compensation in RP using SLA,' J. of the KSPE, Vol. 19, No.3, pp. 152-159, 2002
  4. Dai, K. and Shaw, L., 'Distortion minimization of laser-processed components through control of laser scanning patterns,' Rapid Prototyping Journal, Vol. 8, No. 5, pp. 270-276, 2002 https://doi.org/10.1108/13552540210451732
  5. Bugeda, G., Cervera, M., Lombera, G. and Onate, E., 'Numerical analysis of stereo lithography processes using the finite element method,' Rapid Prototyping Journal, Vol. 1, No. 2, pp. 13-23, 1995 https://doi.org/10.1108/13552549510086835
  6. Huang, Y. M. and Jiang, C. P., 'Curl Distortion Analysis During Photopolymerisation of Stereolithography Using Dynamic Finite Element Method,' The Int. J. of Adv. Manuf. Technol., Vol. 22, No. 2, pp. 586-595, 2003 https://doi.org/10.1007/s00170-002-1317-z
  7. Jones, Robert M., 'Mechanics of Composite Materials,' Scripta Book Company, pp,45-47, pp. 148-156, 1975
  8. Ahn, S. H., Lee, C. S., Baek, C. G. and Chu, W. S., 'Strength Prediction Model of Rapid Prototyping Parts-FDM,' J. of the KSCM, Vol. 15, No. 6, pp. 38-43, 2002