Finite element based dynamic characteristics of journal bearing in a new two-stroke linear generator engine

Mustafiz M. Rahman, Ahmad Kamal Ariffin Mohd Ihsan

Research output: Contribution to journalArticle

Abstract

This paper presents the dynamic characteristics of hydrodynamic journal beating in a new two-stroke linear generator engine to solve tribological problems considering constant viscosity of the lubrication using the finite element method. The tribological phenomenon of the sliding surfaces between connecting rod and bush may be among the most complex in the linear generator engine and could become even more severe with increasing the engi ne power. The friction between the connecting rod and bush significantly contributes to the power losses of the engine. On the basis of the finite element analysis theory, the Reynolds equation for dynamic loads is derived. The results represent the bearing characteristics, namely the variation of pressure along the circumference, effects of load-carrying capacity, frictional losses, and stiffness and damping coefficient with the eccentricity ratio and also presented the variation of eccentricity ratio with Sommerfeld number. Results from the numerical analysis indicated that the effect of load-carrying capacity, frictional losses strongly depends on the eccentricity ratio. It also shows that the dynamic characteristics, namely stiffness and damping coefficients also greatly depends upon the eccentricity ratio. This paper also investigated the performance characteristics of the journal bearing as well as on its stability.

Original languageEnglish
Pages (from-to)115-127
Number of pages13
JournalMalaysian Journal of Science
Volume25
Issue number1
Publication statusPublished - Jun 2006

Fingerprint

Journal bearings
Connecting rods
Load limits
Engines
Bearings (structural)
Damping
Stiffness
Finite element method
Reynolds equation
Dynamic loads
Lubrication
Numerical analysis
Hydrodynamics
Viscosity
Friction

Keywords

  • Damping coefficient
  • FEM
  • Friction
  • Journal bearing
  • Lubricaton
  • Stiffness coefficient

ASJC Scopus subject areas

  • General

Cite this

Finite element based dynamic characteristics of journal bearing in a new two-stroke linear generator engine. / Rahman, Mustafiz M.; Mohd Ihsan, Ahmad Kamal Ariffin.

In: Malaysian Journal of Science, Vol. 25, No. 1, 06.2006, p. 115-127.

Research output: Contribution to journalArticle

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AB - This paper presents the dynamic characteristics of hydrodynamic journal beating in a new two-stroke linear generator engine to solve tribological problems considering constant viscosity of the lubrication using the finite element method. The tribological phenomenon of the sliding surfaces between connecting rod and bush may be among the most complex in the linear generator engine and could become even more severe with increasing the engi ne power. The friction between the connecting rod and bush significantly contributes to the power losses of the engine. On the basis of the finite element analysis theory, the Reynolds equation for dynamic loads is derived. The results represent the bearing characteristics, namely the variation of pressure along the circumference, effects of load-carrying capacity, frictional losses, and stiffness and damping coefficient with the eccentricity ratio and also presented the variation of eccentricity ratio with Sommerfeld number. Results from the numerical analysis indicated that the effect of load-carrying capacity, frictional losses strongly depends on the eccentricity ratio. It also shows that the dynamic characteristics, namely stiffness and damping coefficients also greatly depends upon the eccentricity ratio. This paper also investigated the performance characteristics of the journal bearing as well as on its stability.

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