Title :
Crankshaft Dynamic Strength Analysis for Marine Diesel Engine
Author :
Gongzhi, Yu ; Hongliang, Yu ; Shulin, Duan
Author_Institution :
Dalian Maritime Univ., Dalian, China
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;
Conference_Titel :
Measuring Technology and Mechatronics Automation (ICMTMA), 2011 Third International Conference on
Conference_Location :
Shangshai
Print_ISBN :
978-1-4244-9010-3
DOI :
10.1109/ICMTMA.2011.200
