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Numerical Simulation of Molding in Fused Deposition Modeling

Author: SongLiLi
Tutor: CaoZhiQing
School: Beijing University of Chemical Technology
Course: Mechanical Design and Theory
Keywords: Rapid prototyping technology
CLC: TH16
Type: Master's thesis
Year: 2005
Downloads: 185
Quote: 5
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Abstract


Fused deposition modeling (FDM) is the most important one of rapid prototyping technology. This paper using large-scale finite element analysis software ANSYS, the "element birth and death" in the simulation of the forming process of the material in the accumulation, consider temperature-dependent thermal conduction and heat capacity, thermal physical parameters, the establishment of a fused deposition modeling process of three dimensional temperature field and stress field of the finite element model, the influences of the latent heat enthalpy of phase change process. Based on the established finite element model, discussed the different scanning speed on forming parts the influence of stress and deformation. Theoretically verified the rationality and feasibility of high speed scanning. And it analyses the different scanning way and length-width ratio, the influence of the temperature stress distribution. The finite element simulation results and related experimental results reported in literatures have good consistency, in this paper the established finite element model is reasonable, can very good simulation for fused deposition modeling rapid prototyping molding parts of buckling deformation, this is the development direction of the process and for reasonable selection of process parameters to provide a theoretical basis.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Machinery Manufacturing Technology
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