Abstract
Crankshafts are one of the most important parts of a reciprocating engine. A°t basically connects driveline system to the pistons which gives the motion. Main aim of Crankshaft systems designs are to have lower bearing forces, lower torsional vibrations and higher fatigue strength. But, due to complexity of the geometry, lack of manufacturing quality and nonlinear forces, it is hard to analyze the characteristics of the crankshaft. In this paper, a 2D representation of a crankshaft model was built with load information from connecting rods and other specifications. The resultant bearing forces and harmonics of the crankshafts were calculated with given data. The AVL Excite software program was used to simulate the crankshaft of an engine.
Highlights
All rotating machine assemblies experience torsional vibrations while working
Maximum deformation can be achieved with 2.107 torsional stiffness values
TV Damper inertia and stiffness values have a huge impact on mechanical properties of reciprocating engines
Summary
All rotating machine assemblies experience torsional vibrations while working. As a result, rotating and reciprocating devices must be observed with respect to torsional vibration in order to avoid failures. Magnitude of torsional vibrations leads extra stresses on shafts. These stresses have relationship between operating speed and natural frequencies of shaft systems. This stress relies on stress concentrations and damping coefficients
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