3-D FEM analysis of the temperature field and the thermal stress for plastics thermalforming |
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| Affiliation: | 1. Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, Kumamoto 862-0973, Japan;2. Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia 61519, Egypt;3. College of Pharmacy, Kinjo Gakuin University, 2-1723 Omori, Moriyama-ku, Nagoya, Aichi 463-8521, Japan;4. Department of Drug Discovery, Science Farm Ltd., 1-7-30 Kuhonji, Chuo-ku, Kumamoto, Kumamoto 862-0976, Japan;1. Department of Materials Science and Engineering, Sharif University of Technology, PO Box 11365-9466, 14588 Tehran, Iran;2. Institute for Nanoscience and Nanotechnology (INST), Sharif University of Technology, 14588 Tehran, Iran;1. National Institute of Research and Development for Biological Sciences, branch Institute of Biological Research Republicii Street 48, 400015 Cluj-Napoca, Romania;2. Babeş-Bolyai University, Electron Microscopy Center, Clinicilor Street 5-7, 400006 Cluj-Napoca, Romania;1. Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo, 156-8502, Japan;2. Tokyo International Clinic, 4-18-19 Takanawa, Minato-ku, Tokyo, 108-0074, Japan;3. Department of Food and Cosmetic Science, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri, 099-2493, Japan;4. Department of Applied Biology and Chemistry, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo, 156-8502, Japan;1. Department of Agricultural and Environmental Sciences, Tennessee State University, 3500 John A. Merritt Blvd., Nashville, TN 37209, USA;2. University of Florida, Tropical Research & Education Center, 18905 SW 280th St., Homestead, FL 33031-3314, USA;3. Agricultural Research Center – Hays, Kansas State University, 1232 240th Avenue, Hays, KS 67601, USA;4. United States Department of Agriculture, Agricultural Research Service, U.S. Vegetable Laboratory, 2700 Savannah Highway, Charleston, SC 29414, USA;5. United States Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, 2881 F&B Road, College Station, TX 77845, USA;6. Department of Entomology and Plant Pathology, The University of Tennessee, 2505 E. J. Chapman Dr., 370 Plant Biotechnology Building, Knoxville, TN 37996, USA |
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| Abstract: | The FEM software ARVIP-3D is developed to simulate the deformation, temperature field, thermal stress and warpage of 3-D plastics thermalforming and blow molding. Temperature has a great effect on plastics forming behavior by influencing the material performance parameters, the fluid viscosity and the fluid behavior exponent. Combined with the rigid–visco-plastic FEM equation for forming computation, the Arrhenius and Williams equation for viscosity computation, the Calerkin FEM equation for the temperature field, the FEM software is developed. Whilst simulating the 3-D temperature field, the dynamic heat-conduction boundary condition is adopted, latent heat and deformation heat being treated as dynamic internal heat source in FEM equation. The computational results of adopting the analytical method and the FEM program developed by the authors indicate that the program of analyzing the temperature field is accurate. The simulation result of the temperature distribution corresponding to the thickness distribution agrees well with the experimental results of other researchers. This provides the theoretical basis and a guide for acquiring the thickness distribution of a part by a simple, convenient and non-destructive temperature measurement in practical production, and provides a useful tool to optimize the technique to secure an even distribution of thickness in the part. The warpage and thermal-stress analysis can predict defects and optimize the cooling system to secure an even temperature distribution within the part to assure the part's final shape, practical performance and strength. |
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