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http://dx.doi.org/10.5762/KAIS.2017.18.8.378

Optimum Design of Lock Snap-fit Using Design of Experiment  

Son, In-Seo (Graduate School of Mechanical Engineering, Yeungnam University)
Shin, Dong-Kil (School of Mechanical Engineering, Yeungnam University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.8, 2017 , pp. 378-385 More about this Journal
Abstract
This study investigated the design of a snap fit, which is widely used for fastening plastic parts. We analyzed the assembly mechanism of a lock snapfit, measured the assembly force and separation force based on the design of experiments, and derived a regression equation through an analysis of variance. The response surface methodology was also used. Polybutylene terephthalate was used to fabricate specimens, and the assembly force and separation force were measured using a micro-tensile tester. The length, width, thickness, and interference were considered as factors. A second-order regression model was used to derive the regression equation. The assembly force decreased with increasing length and width, but it increased with increasing thickness and interference. The finite element method was used to analyze the assembly mechanics. The width decreased the assembly force by increasing the ductility. The influences of the factors for low assembly force and high release force were shown to be opposite to each other. It was necessary to design a structure that minimized the assembly force while maintaining an appropriate level of separation force.
Keywords
Assembly Force; Central composite design; Design of experiments; Finite elements method; Lock snap-fit; Optimum Design; Separation Force;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 S. S. Lee, T. H. Kim, S. J. Hu, W. W. Cai, J. A. Abell, "Joining Technologies for Automotive Lithium-Ion Battery Manufacturing: A Review", Proc. of ASME 2010 International Manufacturing Science and Engineering Conference, October, 2010. DOI: https://doi.org/10.1115/MSEC2010-34168
2 L. Amelia, D.A. Wahab, A. R. Ismail, C. H. C. Haron, "Disassembly time evaluation for enhancing the reusability of automotive components", IEEE International Conference on Industrial Engineering and Engineering Management, pp. 115-119, Dec. 2009. DOI: https://doi.org/10.1109/IEEM.2009.5373411
3 B. Willems, W. Dewulf, J. R. Duflou, "Active snap-fit development using topology optimization", International Journal of Production Research, vol. 45, no. 18-19, pp. 4163-4187, 2007. DOI: https://doi.org/10.1080/00207540701440311   DOI
4 M. K. Billal, B. V. Moorthy, D. Aquilina, S. Schenten, "CAE Applications and Techniques used in Calculating the Snaps Insertions and Retentions Efforts in Automotive Trims", SAE Int. J. Passeng. Cars - Mech. Syst, vol. 7, no. 2, pp. 829-837, 2014.   DOI
5 S. J. Ha, Y. K. Cho, M. W. Cho, K. C. Lee,, W. H. Choi, "Process Capability Optimization of a LED Die Bonding Using Response Surface Analysis", Journal of the Korea Academia-industrial cooperation Society, pp. 4378-4384, 2012. DOI: https://doi.org/10.5762/KAIS.2017.18.4.175
6 D. K. Shin, H. C. Kim, J. J. Lee, "Numerical analysis of the damage behavior of an aluminum/CFRP hybrid beam under three point bending", Composites: Part B, 56, pp. 397-407, 2014. DOI: https://doi.org/10.1016/j.compositesb.2013.08.030   DOI
7 G. Suri, "A fundamental Investigation of Retention Phenomena in Snap-fit Features" The Ohio State University thesis for a degree, 2002.
8 S. N. Kang, Y. J. Huh, "A study on the Snap-fit Design System in Injection Molding", Journal of the Korea Academia-industrial cooperation Society, pp. 1-5, 2001.
9 P. R. Bonenberger, The First Snap-Fit Handbook 2nd edition, Hanser Gardner Publications, 2006.
10 G. Erhard, Designing with plastics, Hanser Gardner Publications, 2006. DOI: https://doi.org/10.3139/9783446412828
11 B. S. Park, M. S. Hong, "Intensity Analysis and Application of Integral Attachment in Snap-Fit" Transactions of the Korean Society of Machine Tool Engineers, pp. 44-49, 2006.
12 D. A. Nichols, A. F. Luscher, "Numerical Modeling of a Post & Dome Snap-Fit Feature" Research in English Design, pp. 103-111, 2000.