Investigation of rib effects on deformation in plastic part made from polypropylene

Year 2019, Volume: 25 Issue: 4, 444 - 453, 28.08.2019

Abdülmecit Güldaş , Mehmet Altuğ , Farnoud Khakzad

Abstract

In
this study, the effects of the ribs on the deformation of the plastic part were
investigated. In this context, four different rib parameters have been
selected, namely the rib thickness, the rib height, the rib angle and the
radius at the bottom of the feds. 5 different heights, 5 different thicknesses,
5 different radiuses and 3 different rib angles were used for designing of
plastic part and analyzing of the mechanical properties of the plastic part.
Resistance of the plastic part according to the identified parameters was
determined by analyzing with Ansys software. According to this study, the
increase in rib height reduces the deformation rate of plastic part by about
49%. In addition, was found that rib thickness reduce the amount of deformation
rate by 44%.

Keywords

Rib, Mechanic analysis, Deformation ratio, Polypropylene

Polipropilen malzemeden üretilmiş plastik parçada federlerin deformasyon üzerindeki etkilerinin araştırılması

Abstract

Bu
çalışmada, federlerin plastik parçanın deformasyonuna etkileri incelenmiştir.
Bu bağlamda, feder parametresi olarak feder kalınlığı, feder yüksekliği,
federin açısı ve federlerin dip kısmındaki yarıçapı olmak üzere dört farklı
feder parametresi belirlenmiştir. Plastik parçanın mekanik özeliklerini analiz
edebilmek 5 farklı yükseklik, 5 farklı kalınlık, 5 farklı yarıçap ve 3 farklı
feder açısı belirlenerek tasarım yapılmıştır. Plastik parçanın belirlenen
parametrelere göre mukavemeti Ansys yazılımı ile analiz yapılarak tespit edilmiştir.
Bu çalışmaya göre, feder yüksekliğinin artması deformasyon oranını yaklaşık %49
azaltmaktadır. Ayrıca, feder kalınlığı ise deformasyon miktarını %44 oranında
azalttığı tespit edilmiştir.

Keywords

Feder, Mekanik analiz, Deformasyon oranı, Polipropilen

References

• Lam YC, Santhikumar S. "Automated rib location and optimization for plate structures". Structural and multidisciplinary optimization, 25(1), 35-45, 2003.
• Yang SY, Lin CT, Chang JH. "Secondary gas penetrations in ribs during full‐shot gas‐assisted injection molding". Advances in Polymer Technology, 22(3), 225-237, 2003.
• Manaf ARA, Zawawi MZ, Adly NZI. "Thin walled part warping overcoming by honeycomb ribs design". In Advanced Materials Research, 903, 181-186, 2014.
• Guo W, Hua L, Mao H. "Minimization of sink mark depth in injection-molded thermoplastic through design of experiments and genetic algorithm". The International Journal of Advanced Manuf. Techn, 72(1-4), 365-375, 2014.
• Lan T, Chiu MC Yeh, LJ. "An approach to rib design of ınjection molded product using finite element and Taguchi method". Information Technology Journal, 7(2), 299-305, 2008.
• Erzurumlu T, Ozcelik B. "Minimization of warpage and sink index in injection-molded thermoplastic parts using Taguchi optimization method". Materials and Design, 27(10), 853-861, 2006.
• James P, Krishna DM, Kotresh G, Varughese B. "Finite element analysis of inter spare ribs of composite wing of light transport aircraft against brazier load". National Conference on Scientific Achievements of SC and ST Scientists and Technologists, Bangalore, Bangalore, India, 14-16 April 2009.
• Mathivanan D, Nouby M, Vidhya R. "Minimization of sink mark defects in injection molding process-Taguchi approach”. International Journal of Engineering, Science and Technology, 2(2), 13-22, 2010.
• Chung J, Lee K. "Optimal design of rib structures using the topology optimization technique. proceedings of the ınstitution of mechanical engineers". Journal of Mechanical Engineering Science, 211(6), 425-437, 1997.
• Khazad F. Feder Parametrelerinin Plastik Parça Mukavemeti Üzerindeki Etkilerinin İncelenmesi. Yüksek Lisans Tezi, Gazi Üniversitesi, Ankara, Türkiye, 2017.