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TECHNICAL PAPERS

Warping Analysis in Laminated Object Manufacturing Process

[+] Author and Article Information
Feng Lin, Wei Sun

Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, PA 19104

J. Manuf. Sci. Eng 123(4), 739-746 (May 01, 2001) (8 pages) doi:10.1115/1.1403447 History: Received March 01, 2000; Revised May 01, 2001
Copyright © 2001 by ASME
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References

Dolenc,  A., and Mäkelä,  I., 1994, “Slicing Procedures for Layered Manufacturing Techniques,” Comput.-Aided Des., 26, No. 2, pp. 119–126.
Bablani, M., and Bagchi, A., 1995, “Quantification of Errors in Rapid Prototyping Processes, and Determination of Preferred Orientation of Parts,” Transactions of the North American Manufacturing Research Institution of SME, Vol. XXIII, Houghton, MI, pp. 319–324.
Jacobs, P. F., 1996, Stereolithography and Other RP&M Technologies: from Rapid Prototyping to Rapid Tooling, SME publishing, Dearborn, Michigan.
Warner, M., and Hsieh, B., 1992, “Let’s Cast a LOM part: A Case Study of Laminated Object Manufacturing Machine,” Proceedings of the Third International Conference on Rapid Prototyping, University of Dayton, Dayton, pp. 287–294.
Chi, C., 1996, “Process Insight About LOM Systems,” Proceedings of Solid Freeform Fabrication Symposium, The University of Texas at Austin, pp. 515–522.
Lin, F., 1997, “Research on the Principle of Slicing Solid Manufacturing Process and the System Development,” Ph.D. Dissertation, Department of Mechanical Engineering, Tsinghua University, Beijing, China.
Pak, S. S., and Nisnevich, G., 1994, “Interlaminate Strength and Processing Efficiency Improvements in Laminated Object Manufacturing,” Proceedings of 5th International Conference on Rapid Prototyping, Dayton, pp. 171–180.
Sonmez,  F. O., and Hahn,  H. T., 1998, “Thermomechanical Analysis of the Laminated Object Manufacturing (LOM) Process,” Rapid Prototyping Journal, 4, No. 1, pp. 26–36.
Flach, L., Klosterman, D. A., and Chartoff, R. P., 1997, “A Thermal Model for Laminated Object Manufacturing Process,” Proceedings of Solid Freeform Fabrication Symposium, The University of Texas at Austin, pp. 677–688.
Flach, L., Jacobs, M. A., Klosterman, D. A., and Chartoff, R. P., 1998, “Simulation of Laminated Object Manufacturing (LOM) with Variation of Process Parameters,” Proceedings of Solid Freeform Fabrication Symposium, The University of Texas at Austin, pp. 407–416.

Figures

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Simple warping phenomena
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The outside forces in LOM process
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The sample of glue’s viscosity variation with temperature 6
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Relationship of layer connecting intensity E with adhesive viscosity ω
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The illustration of the thermal force’s production
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The coordination of the temperature field simulation
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The work cycle of LOM process
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Temperature calculation flowchart
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Comparison between the calculated and the measured temperatures
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Temperature variations at the selected layers
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Definition of layer adhesive connecting intensity
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Relationship of viscosity and adhesive connecting intensity with temperature
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The conversion of thermal force with connecting intensity variation
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The simulated intralaminar thermal force at the 300th layer’s affected by the addition of the 301st layer

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