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The Development of High-Accuracy Warpage Analysis CAE for Large, Thin Plastic Parts
Technical Paper
2005-01-1070
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
This paper presents an improved CAE method for high-accuracy warpage analysis. The physical properties of the materials that affect warpage are examined, considering the mechanisms at work in each of the three steps of the injection molding process: injection, pressure holding, and cooling/ejection. When a theoretical mechanism is not fully understood and measurements are inaccurate, correction is made based on the measurement values of large, thin parts. This paper describes both the analysis and application from more than two years of study using the new CAE method.
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Authors
- Tadayoshi Takahara - General Assembly Engineering Div. Toyota Motor Co.
- Makoto Yoshinaga - General Assembly Engineering Div. Toyota Motor Co.
- Takashi Mizuno - General Assembly Engineering Div. Toyota Motor Co.
- Hiroshi Furuhashi - Production Engineering R&D Dept. DENSO Co.
- Kazumichi Yamada - Engineering Systems Development Sect. Toyoda Gosei Co., LTD.
- Hiroshi Koyama - Production Engineering Dept. 1 Toyota Boshoku Co.
- Ikuo Imaizumi - Production Engineering 2 Div. Kanto Auto Works, LTD.
Citation
Takahara, T., Yoshinaga, M., Mizuno, T., Furuhashi, H. et al., "The Development of High-Accuracy Warpage Analysis CAE for Large, Thin Plastic Parts," SAE Technical Paper 2005-01-1070, 2005, https://doi.org/10.4271/2005-01-1070.Also In
SAE 2005 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V114-6; Published: 2006-02-01
Number: V114-6; Published: 2006-02-01
Virtual Engineering and Development, Digital Modeling and Rapid Prototyping
Number: SP-1917; Published: 2005-04-11
Number: SP-1917; Published: 2005-04-11
References
- Takahara et al “Finite Element Method for Analyzing Thermal Deformation of Large Plastic Components” SAE 2002 World Congress Detroit, MI
- Kamata et al “Evaluation of P-v-T Properties of Crystalline Polymers Using Injection Molding Processes” Journal of JSPP 11 7 627
- Yamabe et al “Generation Mechanism of Residual Stress for PP and PA During Injection Molding” JSPP '97 Tech Papers 317 318 1997
- Wang K. K. “Post molding and Load-Induced Deformation Analysis of Plastic Parts in the Injection Molding Process” Advances in Polymer Technology 11 2 77 89 1991 1992
- Titomanlio G. et al “As-Molded Shrinkage Measurements on Polystyrene Injection Molded Products” Polym. Eng. Sci. 38 254 1998