Stress analysis of a Wankel engine eccentric shaft under varied thermal conditions

Ömer Cihan; Mehmet Bulut; Osman Akın Kutlar

doi:10.3139/120.111435

Article

Stress analysis of a Wankel engine eccentric shaft under varied thermal conditions

Ömer Cihan , Mehmet Bulut and Osman Akın Kutlar

Published/Copyright: November 18, 2019

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From the journal Materials Testing Volume 61 Issue 12

Abstract

In this study, the eccentric shaft of a 13B MSP (Multi Side Port) single-rotor Wankel test engine was examined. The eccentric shaft was studied in two parts, both through modeling and experimentally. The eccentric shaft was modeled via a workbench module using ANSYS software. Here, the shaft was modeled according to the original dimensions at different speeds ranging from 1000 to 10000 rpm under different operating temperatures (25, 50 and 90 °C). In the analysis, von Mises stress and corresponding deformations were examined under the specified conditions. Afterwards, the stress and deformation of the eccentric shaft were experimentally investigated in engine tests performed at low loads and speeds. The eccentric shaft broke after approximately 200 hours. It was found that broken region was specified to critical points for validity of the applied model used in the current study. Thus, it was shown deformation and stress values can be predicted by numerically modeling the eccentric shaft with the help of ANSYS software in order to determine whether the eccentric shaft can withstand external loading under various conditions.

*Correspondence Address, Assist. Prof. Dr. Mehmet Bulut, Department of Mechanical Engineering, Hakkari University, 30000 Hakkari, Turkey, E-mail: mehmetbulut@hakkari.edu.tr, mehmetphys@gmail.com, omercihan@hakkari.edu.tr, kutlar@itu.edu.tr

Dr. Mehmet Bulut, born in 1980, studied Mechanical Engineering. He completed his MSc and PhD degrees in Mechanical Engineering at Gaziantep University, Gaziantep, Turkey, in 2013 and 2017, respectively. He worked worked as a Research Assistant at the University of Gaziantep, Mechanical Engineering Department, Turkey, from 2010 to 2017. He is currently working at Hakkari University, Turkey, as Assist. Professor. The primary topics of his scientific work are finite element analysis, polymer composite materials, hybrid composites, impact characteristics of composites, computer aided design and solid mechanics.

Dr. Ömer Cihan, born in 1986, studied Mechanical Training. He completed his MSc degrees in the Department of Mechanical Training at Firat University, Elazığ, Turkey, in 2011. Thereafter, He completed his PhD degrees in Mechanical Engineering at Istanbul Technical University, Istanbul, Turkey, in 2017. He worked as a Research Assistant at the University of Istanbul Technical, Mechanical Engineering Department, Turkey, from 2010 to 2017. He is currently working at Hakkari University, Turkey, as Assist. Professor. The primary topics of his scientific work include engine materials, friction, wear, engine testing, engine performance and emissions, engine construction, rotary engines, engine electronic control unit and internal combustion engines.

Dr. O. Akın Kutlar, completed his BSc in 1963 as as aMechanical Engineer at the Mechanical Engineering Faculty, Istanbul Technical University (ITU), Turkey. He completed his MSc in 1989 at the Institute of Science and Technology, Mechanical Engineering Department, Automotive Engineering ITU, Turkey. In 1999 he completed his PhD at the Institute of Science and Technology, Department of Mechanical Engineering, ITU, Turkey. He has been working since 1987 at the Istanbul Technical University, Mechanical Engineering Faculty, Automotive Division. He worked at Karlsruhe University, Institute for pistonmachines in 1990-92 as a Visiting Researcher. His research interests are internal combustion engines, rotary engines and fuel economy.

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Published Online: 2019-11-18

Published in Print: 2019-12-02

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https://doi.org/10.3139/120.111435