Crankshaft Dynamic Strength Analysis for Marine Diesel Engine

Author

Gongzhi, Yu ; Hongliang, Yu ; Shulin, Duan

Author_Institution

Dalian Maritime Univ., Dalian, China

Volume

1

fYear

2011

fDate

6-7 Jan. 2011

Firstpage

795

Lastpage

799

Abstract

Dynamic strength analysis of crankshaft for two-stroke marine diesel engine is carried out on the normal operation. The finite element models of crankshaft, bearing, piston and connecting rod are created in ANSYS and simplified by sub-structure technique. The result files of reduced models are introduced into EXCITE software to create the multi-body dynamic model of marine diesel engine. The model is used for multi-body dynamics calculation of crankshaft in one working cycle. Then, the results are recovered to the fine solid finite element model of crankshaft to complete dynamic stress calculation. Compared with single crankshaft strength analysis, nonlinear multi-body dynamics method is closer to the actual boundary conditions of the crankshaft load, and this method may improve the dynamic characteristics calculation precision of marine diesel engine crankshaft.

Keywords

diesel engines; finite element analysis; machine bearings; marine engineering; mechanical strength; pistons; shafts; bearing; connecting rod; dynamic strength analysis; dynamic stress calculation; finite element models; multibody crankshaft dynamics; piston; single crankshaft strength analysis; two-stroke marine diesel engine; Biological system modeling; Diesel engines; Finite element methods; Force; Load modeling; Mathematical model; Stress; dynamic characteristics; finite element method; marine diesel engine; multi-body dynamics; strength of crankshaft;

fLanguage

English

Publisher

ieee

Conference_Titel

Measuring Technology and Mechatronics Automation (ICMTMA), 2011 Third International Conference on

Conference_Location

Shangshai

Print_ISBN

978-1-4244-9010-3

Type

conf

DOI

10.1109/ICMTMA.2011.200

Filename

5720903