Loading...
Search for:
crankshaft
0.024 seconds
Crankshaft Torsional Vibrations Modeling and Torsional Vibration Damper Design
, M.Sc. Thesis Sharif University of Technology ; Foomani, Saadat (Supervisor) ; Durali,Mohammad (Co-Advisor)
Abstract
The main objective of this project is to take the first step in designing torsional vibration damper (TVD) for engines in Iran. To this end a complete dynamic model of a 4 cylinder internal combustion engine comprising of all reciprocating parts plus the crankshaft was developed using Bond Graph method. Real firing data of the engine was used as input to the system and output torque to gearbox shaft as the output. The system equations in two cases, with TVD and without TVD were derived. MATLAB software was used to solve these equations in finding the quality of performance of the torsional vibration damper. Dynamic properties of crankshaft and designed TVD were obtained using finite element...
Optimization of Fillet Rolling of Ductile Cast Iron Crankshaft in Order to Increase the Bending Fatigue Resistance
, M.Sc. Thesis Sharif University of Technology ; Farrahi, Gholamhossein (Supervisor)
Abstract
In order to reduce stress concentration, crankshaft is designed with a fillet radius in the corner of pin to web contact. Fatigue fracture under bending load initiated in fillet region is known as the main failure mechanism of crankshaft, so fillet rolling process is used to increase the bending fatigue resistance of the crankshaft. This process induces compressive residual stress under fillet surface in order to retard the fatigue initiation and to slow fatigue crack propagation. At first, influence of fillet rolling process on bending fatigue resistance of a ductile cast iron crankshaft is investigated. The residual stress distribution under the crankshaft fillet induced by this process...