Cracked Shaft
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Quasi-static numerical study of the breathing mechanism of an elliptical crack in an unbalanced rotating shaft
In this paper we present the numerical analysis of the quasi-static behavior of an unbalance cracked shaft with straight and elliptical cracks considering an eccentric mass. The rotation of the shaft has been simulated by considering different angular positions to complete one rotation. The influence of the mass eccentricity in the opening of the crack has b
Lat. Am. j. solids struct.. Publicado em: 2014
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2. Control of the breathing mechanism of a cracked rotor by using electro-magnetic actuator: numerical study
This paper presents a numerical study devoted to the evaluation of the possibility of monitoring and controlling the dynamic behavior of a rotating machine with a cracked shaft by using an Electro-Magnetic Actuator (EMA). The EMA is located at the mid-span of the rotor to provide active control. The opening and closure (breathing) of the crack is determined
Lat. Am. j. solids struct.. Publicado em: 2012-10
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3. Análise por elementos finitos da influência de descontinuidades geométricas sobre o comportamento dinâmico de rotores flexíveis.
This work deals with a finite element analysis of the dynamic behavior of cracked flexible rotors supported by hydrodynamic journal bearing. Geometric discontinuities such as cracks, holes, undercuts, etc. can strongly affect the vibrational response of rotating systems due to the rotor local flexibility changes. The rotor model is based on the Timoshenko be
Publicado em: 2007
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4. Fault diagnosis in rotating machinery / Diagnóstico de falhas em máquinas rotativas
Neste trabalho apresenta -se um estudo do comportamento dinâmico de um rotor com trinca no regime transiente, tanto na parada como na partida. Foi desenvolvido um modelo matemático -computacional de um rotor com trinca e foram também realizados testes experimentais com vistas à validação do modelo. Para o estudo experimental, foi construida uma bancada
Publicado em: 2005