Abstract
The paper presents the proposed methodology of crankshaft stiffness matrix modeling. Geometry and linear-elastic shaft properties are one of common occurrences of torsionally rigid vibration coupling in crank systems. Model and experimental studies require the stiffness of the object in question. In the case of linear-elastic systems it is identical with the definition of its stiffness matrix. In the introduction, the current state of knowledge in the field of identification and modeling of crankshaft dynamics was reviewed. The next chapter presents the research stand for the study of dynamic properties of crank systems. The measurement path was described, its parameters and preliminary results were presented. The next part concerns the dynamic model of the crank system used by the authors and the need for a methodology to determine the stiffness of the shaft in question. The following chapters describe the mathematical description of the proposed methodology and the results of the calculations. The article was finalized with a summary of conclusions drawn from the work carried out.
Highlights
In the combustion engine, the crankshaft torsional vibration reduction is the most effective
It was necessary to develop an effective methodology for determining the components of the crankshaft rigidity matrix
The analysis of the model proposed in [2] makes it possible to claim that the coupling phenomenon is useful for the purpose of diagnostic and structural rotor devices, in which the measurement of torsional vibrations is hindered by the use of coupling to induce torsional vibrations based on transverse vibrations which are easier to measure
Summary
The crankshaft torsional vibration reduction is the most effective. This is dictated by fatigue strength of the shaft itself and care about the viability of the remaining components of the drive system. At the design stage of the structure with rotating elements, the problem of the bending and torsional vibration is very often overlooked and the vibrations are independently analyzed [1]. This is caused by a large complexity of the problem. The analysis of the model proposed in [2] makes it possible to claim that the coupling phenomenon is useful for the purpose of diagnostic and structural rotor devices, in which the measurement of torsional vibrations is hindered by the use of coupling to induce torsional vibrations based on transverse vibrations which are easier to measure
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
