Abstract:A finite element model of a diesel propulsion shaft is established with consideration of the coupled torsional-longitudinal vibration caused by diesel engine crankshafts and hydrodynamic added inertia and damping of the propeller. The free vibration and shock response of the coupled system are compared with those of the uncoupled system, in order to obtain the influences of the coupled torsional-longitudinal effect. Results show that the coupled torsional-longitudinal vibration has little effect on the natural frequencies, but influences the shock response significantly. Longitudinal (torsional) shock induces both longitudinal and torsional response, leading to larger displacements and torques, which deteriorates the security of operation. Thus, enough attention must be paid to the torsional-longitudinal shock response in the design of ship propulsion shaft.
杨翼,王旭荣,王明坤,吴毅,戴义平. 船舶推进轴系的扭转-纵向冲击响应[J]. 振动与冲击, 2017, 36(13): 96-102.
YANG Yi, WANG Xurong, WANG Mingkun, WU Yi, DAI Yiping. Torsional-Longitudinal Shock Response of Ship Propulsion Shaft. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(13): 96-102.
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