Design Optimization of Marine Engine-Mount System

Tao, Jianmin; Liu, G.R.; Lam, K.Y.

doi:10.1006/jsvi.2000.2945

Cited by 96 publications

(50 citation statements)

References 12 publications

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“…Over 500 order modes are solved in ANSYS software. The impedance matrix can be solved through (13)- (15).…”

Section: Gearbox Housingmentioning

confidence: 99%

“…Research objects have been developed from rigid models [15,16] to flexible ones [17][18][19], and the performance index has been developed from force or velocity indices [20][21][22] to power flow indices [17,18,23]. Du [24] found that the force transmissibility increased 20∼30 dB, and the noise radiated by the foundation increased about 22 dB when wave effects of isolators are considered.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Vibratory Power Flow Analysis of a Gear‐Housing‐Foundation Coupled System

Ren

Chang

Liu

et al. 2018

Shock and Vibration

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The marine gearbox is usually installed on a vibration isolation system in order to reduce oscillation transmitted to the ship foundation. However, researches on vibration transmission in the gear-housing system and isolation system are currently independent. With the increasing requirement of lower vibration, a coupled model needs to be built to control the vibration propagation from a view of the whole system. Considering the mesh transmission error excitation of a gear pair, a flexible gearhousing-foundation coupled impedance model is constructed in this paper, and the vibratory power flow of the whole system is calculated. Power transmissions between three different gearbox installation configurations, that is, rigid installation, singlestage isolation, and double-stage isolation, are compared. Taking the single-stage isolation configuration as an example, parameter influences on the vibration of the foundation are studied. Results show that double-stage isolation can achieve lower vibration than single-stage isolation; decrease in bearing stiffness or Young's modulus of isolator will yield better vibration isolation performance; housing damping and isolator damping are beneficial to vibration reduction.

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“…Over 500 order modes are solved in ANSYS software. The impedance matrix can be solved through (13)- (15).…”

Section: Gearbox Housingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Vibratory Power Flow Analysis of a Gear‐Housing‐Foundation Coupled System

Ren

Chang

Liu

et al. 2018

Shock and Vibration

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“…System modelling and optimization based on the assumption of a rigid support structure has been the subject of a number of investigations over the past decade (Ashrafliuon 1993, Swanson et al 1993, Snyman et al 1995, Tao et al 2000, Yu et al 2001, Ahn et al 2003, Alkhatiba et al 2004, Kaul et al 2005. Although these rigid support-based optimization models generally yield reasonable predictions of what is observed in real engineering situations, they may not be valid for some critical applications associated with the aerospace, marine, and automation equipment industries (Ashrafliuon and Nataraj 1992, Pan and Hansen 1994, Choy and Wong 2004.…”

Section: Introductionmentioning

confidence: 97%

“…The use of optimization techniques in the design of mounting systems for a wide range of industrial machinery has attracted increasing attention in recent years because of the ability of these techniques to minimize vibration transmission from the machines to their support structures (Ashrafliuon 1993, Swanson et al 1993, Snyman et al 1995, Tao et al 2000, Yu et al 2001, Ahn et al 2003, Alkhatiba et al 2004, Kaul et al 2005. Specifically, an optimal *Corresponding author.…”

Section: Introductionmentioning

confidence: 98%

Design optimization of machinery mounting systems with an elastic support structure

Xie

Chan

et al. 2007

Engineering Optimization

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An elastic support-based optimization model is developed for a machinery mounting system comprising a vibrating machine supported on an elastic structure by multiple resilient mounts. This model is used to investigate the design optimization of an X−Y motion stage mounting system used in microelectronics wire-bonding equipment. By varying the stiffness coefficients of the resilient mounts while constraining the dynamic displacement amplitudes of the X−Y motion stage, the total force transmitted from the X−Y motion stage (the vibrating machine) to the equipment table (the elastic support structure) is minimized at each frequency interval in the frequency range of interest for different stiffnesses of the equipment table. The results show that, when the equipment table is relatively flexible, the total transmitted force minimized by the model developed is significantly lower than that minimized using a conventional rigid support-based optimization model at some critical frequency. When the equipment table is sufficiently rigid, both models provide almost the same predictions of the total transmitted force.

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“…One of the most common approaches to isolate engine vibrations is to use passive mounts [4][5][6]. In this approach, light damping is needed to absorb the vibrations.…”

Section: Introductionmentioning

confidence: 99%