NEW CAE PACKAGE FOR PROPULSION TRAIN CALCULATIONS

Y. A. Batrak, Intellectual Maritime Technologies, Ukraine SUMMARY There are three main problems for engineers specializing in propulsion train calculations, which include shaft alignment, whirling vibration, bending vibration, axial and torsional vibration calculations. The first problem is a lack of a single shaft model to perform all types of shaft related calculations. Oftentimes separate software …

Ice Induced Propulsion Shafting Torsional Vibration Analysis Issues and Case Studies

Yuriy Batrak Intellectual Maritime Technologies, 19-g/12 Krylova str., Mykolaiv 54038, Ukraine yuriy.batrak@marine-software.com Abstract Since analysis of shafting transient torsional vibrations caused by ice impacts became mandatory, numerous modelling-based calculations have been carried out for ships sailing under ice class. However, the calculation results still do not allow to obtain general conclusions from the shafting response in …

High-end software for propulsion shaft calculation

Yuriy A. Batrak PhD, Intellectual Maritime Technology Martin van Leest, Machine Support B.V. ABSTRACT There are three main problems for engineers specializing in propulsion train calculation. The first problem is a lack of a single shaft model to perform all types of shaft related calculations, the second is the inability to analyze different operation states …

COMPUTER APPLICATION FOR SHAFT ALIGNMENT DESIGN

Yu. Batrak, R. Batrak, D. Berin, Intellectual Maritime Technologies, UKRAINE SUMMARY The propulsion shafting operates at the junction of different media where the interacting conditions change constantly depending on the ship draught, engine speed, ambient and machinery temperature. Once installed on the flexible hull structures it is exposed to hydrodynamic propeller loads, variable contact conditions …

CALCULATION OF TORSIONAL VIBRATION RESPONSES IN PROPULSION SHAFTING SYSTEM CAUSED BY ICE IMPACTS

Yuriy A. Batrak*1, Anatoliy M. Serdjuchenko2 and Alexander I. Tarasenko2 1 Intellectual Maritime Technologies, 19-g/12 Krylova str., Mykolayiv 54038, Ukraine 2National University of Shipbuilding 9, Geroyiv Stalingrada av. Mykolayiv 54025, Ukraine yuriy.batrak@gmail.com (e-mail address of lead author) Abstract Polar ships and other ice-class ships intended for navigation in ice-infested waters suffer from the transient torsional …

CALCULATION OF PROPULSION SHAFTING TRANSIENT TORSIONAL VIBRATION INDUCED BY ICE IMPACTS ON THE PROPELLER BLADES

Yuriy A. Batrak, Аnatoliy M. Serdjuchenko, Alexander I. Tarasenko Intellectual Maritime Technologies Krylova str., 19-g/12 Mykolaiv, Ukraine 54038 ABSTRACT Calculation of transient torsional vibration induced by ice block impacts on the propeller blades is mandatory since January 2011 when new Classification Societies Rules for the ships navigating in ice came into force. The calculation complexity …