Multi-objective design optimization of an engine accessory drive system with a robustness analysis

Zhu, Hao; Hu, Yumei; Zhu, Weidong; Fan, Wei; Zhou, Biwen

doi:10.1016/j.apm.2019.09.016

Cited by 9 publications

(1 citation statement)

References 34 publications

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“…What is more, there still lacks an efficient and accurate friction model to describe complicated dry friction–induced dynamic performances of the tensioner arm. The early equivalent viscous damping method (Parker, 2004; Shangguan and Zeng, 2013; Zhu et al, 2018a, 2018b, 2020a) cannot capture the stick–slip motion of the tensioner arm. The classical Coulomb model (Leamy and Perkings, 1998) can capture the stick–slip behavior of the tensioner arm, but it has a big problem in numerical calculation at the null velocity.…”

Section: Introductionmentioning

confidence: 99%

Steady-state and start-up transient responses of a belt-driven starter generator system for micro-hybrid electric vehicles

Zhu

et al. 2021

Journal of Vibration and Control

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For micro-hybrid electric vehicles, the belt-driven starter generator system is a typical idle stop–start system that is used to substitute the traditional engine front-end accessory drive system. The aim of this work is to present a method to investigate steady-state and start-up transient responses of a typical belt-driven starter generator system with twin tensioner arms for micro-hybrid electric vehicles. A dynamic model of the belt-driven starter generator system is established for this scheme, where a smoothing dynamic friction model considering the velocity-weakening effect is presented to model the tensioner dry friction. Unlike some traditional dynamic models of the belt-driven starter generator system that the engine dynamics and dynamics of the belt-driven starter generator system are decoupled, an engine dynamic model, which is embedded in the dynamic model of the belt-driven starter generator system, is also established to calculate engine resistance torques at the engine starting process stage. Influences of the tensioner dry friction and stiffness on steady-state responses of the belt-driven starter generator system especially the stick–slip oscillations of the twin tensioner arms are examined. Angular oscillations and rotation speed variations of the belt-driven starter generator pulley and C/S pulley as well as the belt tension variations during the engine starting process are calculated. Influences of the tensioner dry friction and stiffness on transient dynamic performances of the belt-driven starter generator system during the engine starting process and its starting efficiency are investigated.

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Section: Introductionmentioning

confidence: 99%

Steady-state and start-up transient responses of a belt-driven starter generator system for micro-hybrid electric vehicles

Zhu

et al. 2021

Journal of Vibration and Control

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Dynamic analysis and optimization of a wind turbine tower subject to wind and earthquake loads

Zhu

2022

Structural Design Tall Build

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A dynamic model of a wind turbine tower is established to investigate its dynamic responses under wind and earthquake loads. Then a generalized global spatial discretization method is used to solve the problem. Modal analysis of the wind turbine tower is conducted using the dynamic model and the results are verified by shell models and beam models established in the commercial FE software ANSYS and LS-DYNA. Transient vibration displacements, as well as normal and shear stress distributions of the wind turbine tower subject to different levels of pulsing wind loads, are calculated based on the dynamic model. Quasi-static motion and transient motion assumptions are applied to evaluate the strengths of the tower, respectively. Influences of different earthquake ground motions on vibration amplitudes of the tower top are examined. Then, a hybrid mutation particle swarm optimization algorithm is used to perform design optimization on the tower body thickness for vibration reduction with its weights and strength being constrained. The penalty function strategy is used to deal with the constraints on body weight and stress level. Results demonstrate that the comprehensive performances of the wind turbine tower especially the tower top vibration have been greatly reduced after optimization.

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Multi-objective modified heat transfer search for truss optimization

Kumar

Tejani²,

Pholdee

et al. 2020

Engineering with Computers

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Multi-objective design optimization of an engine accessory drive system with a robustness analysis

Cited by 9 publications

References 34 publications

Steady-state and start-up transient responses of a belt-driven starter generator system for micro-hybrid electric vehicles

Steady-state and start-up transient responses of a belt-driven starter generator system for micro-hybrid electric vehicles

Dynamic analysis and optimization of a wind turbine tower subject to wind and earthquake loads

Multi-objective modified heat transfer search for truss optimization

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