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Model reduction of contact dynamics simulation using a modified Lyapunov balancing method

Jianxun LIANG, Ou MA, Caishan LIU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 383-391 doi: 10.1007/s11465-011-0244-9

Abstract:

Finite element models are often used to simulate impact and contact dynamics responses of multibodyAlthough many model reduction techniques have been available to improve the efficiency of finite elementthe high nonlinearity of the contact dynamics models.This paper presents a model reduction approach for finite-element based multibody contact dynamics simulationAn example is presented to demonstrate that, by applying the model reduction the simulation process is

Keywords： contact dynamics     dynamic simulation     model reduction     finite element method    

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Model validation for structural dynamics in the aero-engine design process

Chaoping ZANG, D. J. EWINS,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 480-488 doi: 10.1007/s11708-009-0043-8

Abstract: A model validation technique in structural dynamics and its application in aero-engine development isThe concept and the approaches of model validation based on reference data supplied from experimentalA satisfactory agreement with both approaches is achieved, and finally, a strategy of model validationfor the whole engine model is introduced.

Keywords： model validation     aero-engine     structural dynamics    

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Model reduction techniques for dynamics analysis of ultra-precision linear stage

Xuedong CHEN, Zhixin LI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 64-70 doi: 10.1007/s11465-009-0009-x

Abstract: Spring-damping elements are used to simplify the internal interaction in the proposed finite element (FE) modelThe dynamics behavior is studied.from the eigenvalue analysis shows that the components, except the translator, can represent system dynamicsanalysis proves the validity of the reduction approach, which can be generalized to the development and dynamicscharacteristic study of a complex system model to obviously save computational resource.

Keywords： dynamics analysis     air-bearing     linear stage     reduction    

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Molecular dynamics study of water diffusion in an amphiphilic block copolymer with large difference in

Yang Zhou, Phillip Choi

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 440-447 doi: 10.1007/s11705-017-1626-2

Abstract: Isothermal-isobaric molecular dynamics simulation was used to study the diffusion mechanism of waterexponentially with increasing water concentration at both temperatures (i.e., following the free volume model

Keywords： molecular dynamics simulation     amphiphilic block copolymer     free volume     water diffusivity     fujita model    

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Modeling and analysis of landing collision dynamics for a shipborne helicopter

Dingxuan ZHAO, Haojie YANG, Carbone GIUSEPPE, Wenhang LI, Tao NI, Shuangji YAO

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 151-162 doi: 10.1007/s11465-020-0617-z

Abstract: A Lagrange dynamic model is established based on small-angle approximation to improve the simulationmodel for shipborne helicopter landing collision.To describe fuselage motion effectively, the proposed model considers ship motion, the interaction ofbuilt, and a real-time reliability analysis of the algorithm is implemented to validate the proposed modelResults show that the proposed dynamic model can simulate the collision motion of helicopter landing

Keywords： shipborne helicopter     landing model     Lagrange equations     dynamics     validation    

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Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model

Nana QI, Hui WANG, Kai ZHANG, Hu ZHANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 506-514 doi: 10.1007/s11705-010-0508-7

Abstract: The Speziale, Sarkar and Gatski Reynolds Stress Model (SSG RSM) is utilized to simulate the fluid dynamicsCFD model data in terms of the flow field, trailing vortex, and the power number are compared with publishedThe comparison shows that the global fluid dynamics throughout the stirred tank and the local characteristicsThe power number predicted is quite close to the designed value, which demonstrates that this model canTherefore, the simulation by using a combination of SSG RSM and MRF impeller rotational model can accurately

Keywords： stirred tank     fluid dynamics     numerical simulation     SSG Reynolds Stress Model     MRF    

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Multi-time scale dynamics in power electronics-dominated power systems

Xiaoming YUAN, Jiabing HU, Shijie CHENG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 303-311 doi: 10.1007/s11465-017-0428-z

Abstract: This transformation has altered the fundamental mechanism of power system dynamics, which demands the

Keywords： power electronics     power systems     multi-time scale dynamics     mass-spring-damping model     self-stabilizing    

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Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials

Linxiang WANG, Roderick MELNIK, Fuzai LV

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 287-291 doi: 10.1007/s11465-011-0230-2

Abstract: In the current paper, a macroscopic differential model is constructed for the coupled hysteretic dynamics

Keywords： differential model     state space     electromechanical switching     butterfly effects     hysteresis    

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Stormwater treatment: examples of computational fluid dynamics modeling

Gaoxiang YING, John SANSALONE, Srikanth PATHAPATI, Giuseppina GAROFALO, Marco MAGLIONICO, Andrea BOLOGNESI, Alessandro ARTINA

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 638-648 doi: 10.1007/s11783-012-0442-7

Abstract: This study applies the principles of computational fluid dynamics (CFD) to predict the particle and pollutantA standard turbulence model is used to resolve flow, and a discrete phase model (DPM) is utilized toCFD results closely follow physical model results across the entire range of flow rates.

Keywords： unit operations and processes (UOPs)     hydrodynamic separation     filtration     adsorption     computational fluid dynamics(CFD)     turbulence modeling     discrete phase model     particle separation     detention/retention basins     clarification    

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Fictitious soil pile model for dynamic analysis of pipe piles under high-strain conditions

Frontiers of Structural and Civil Engineering   Pages 915-934 doi: 10.1007/s11709-023-0907-8

Abstract: A fictitious soil pile (FSP) model is developed to simulate the behavior of pipe piles with soil plugsThe developed model simulates the base soil with a fictitious hollow pile fully filled with a soil plugThe motions of the pile−soil system are solved by discretizing them into spring-mass model based on thefor pipe piles in field tests subjected to impact loading, validate the accuracy of the proposed modelaffected soil zone below the pipe pile toe, and some guidance is provided for the selection of the model

Keywords： fictitious soil pile     soil plug     pipe piles     high-strain dynamic analysis     one-dimensional wave theory     pile dynamics    

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A two-dimensional numerical model for eutrophication in Baiyangdian Lake

Xudong WANG, Shushen ZHANG, Suling LIU, Jingwen CHEN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 6,   Pages 815-824 doi: 10.1007/s11783-011-0383-6

Abstract: An eutrophication eco-dynamics model including the effects of reed resistance on flow was coupled withThe model simulates water quality constituents associated with eutrophication in the lake, includingThe values calculated by the calibrated model agree well with field data, including ammonia nitrogen,Deviations between model-simulated and observed values are discussed.As an ideal tool for environmental management of the lake, this model can be used to predict its water

Keywords： eutrophication     eco-dynamics     hydrodynamics     improved Water Quality Analysis Simulation Program (WASP) model    

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Method for solving the nonlinear inverse problem in gas face seal diagnosis based on surrogate models

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0689-z

Abstract: inferring the input fault parameters for the observed output or solving the inverse problem of the physical modelThe presented work develops a surrogate-model-assisted method for solving the nonlinear inverse problemin limited physical model evaluations.routine that benefits from the rapidity of the surrogate models and the reliability of the physical modelcan effectively identify the parameters that induce the abnormal signal output with limited physical model

Keywords： surrogate model     gas face seal     fault diagnosis     nonlinear dynamics     tribology    

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Simulation of bubble column reactors using CFD coupled with a population balance model

Tiefeng WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 162-172 doi: 10.1007/s11705-009-0267-5

Abstract: tools for engineering purposes, much research has been carried out in the area of computational fluid dynamicsThe population balance model (PBM) is an effective approach to predict the bubble size distribution,It is shown that the CFD-PBM coupled model with proper bubble breakup and coalescence models and interphase

Keywords： bubble column     computational fluid dynamics     bubble breakup and coalescence     population balance model     bubble    

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Principle and status of technique of smoothed particle hydrodynamics and heat conduction model

Wang Yuheng,Liu Feng,Song Fengmei

Strategic Study of CAE 2008, Volume 10, Issue 11,   Pages 47-51

Abstract: technique of smoothed particle hydrodynamics (SPH).Two typical examples of two dimensions nonlinear dynamicsOtherwise, the SPH model on heat conduction problem has been discussed.

Keywords： SPH     two dimensions nonlinear dynamics     heat conduction model     numerical simulations    

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Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 362-377 doi: 10.1007/s11783-011-0365-8

Abstract: In this article computational fluid dynamics (CFD) simulation of aerosol transport and deposition, i.e

Keywords： computational fluid dynamics (CFD)     aerosol     transport     deposition    

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Title Author Date Type Operation

Model reduction of contact dynamics simulation using a modified Lyapunov balancing method

Jianxun LIANG, Ou MA, Caishan LIU

Journal Article

Model validation for structural dynamics in the aero-engine design process

Chaoping ZANG, D. J. EWINS,

Journal Article

Model reduction techniques for dynamics analysis of ultra-precision linear stage

Xuedong CHEN, Zhixin LI

Journal Article

Molecular dynamics study of water diffusion in an amphiphilic block copolymer with large difference in

Yang Zhou, Phillip Choi

Journal Article

Modeling and analysis of landing collision dynamics for a shipborne helicopter

Dingxuan ZHAO, Haojie YANG, Carbone GIUSEPPE, Wenhang LI, Tao NI, Shuangji YAO

Journal Article

Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model

Nana QI, Hui WANG, Kai ZHANG, Hu ZHANG

Journal Article

Multi-time scale dynamics in power electronics-dominated power systems

Xiaoming YUAN, Jiabing HU, Shijie CHENG

Journal Article

Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials

Linxiang WANG, Roderick MELNIK, Fuzai LV

Journal Article

Stormwater treatment: examples of computational fluid dynamics modeling

Gaoxiang YING, John SANSALONE, Srikanth PATHAPATI, Giuseppina GAROFALO, Marco MAGLIONICO, Andrea BOLOGNESI, Alessandro ARTINA

Journal Article

Fictitious soil pile model for dynamic analysis of pipe piles under high-strain conditions

Journal Article

A two-dimensional numerical model for eutrophication in Baiyangdian Lake

Xudong WANG, Shushen ZHANG, Suling LIU, Jingwen CHEN

Journal Article

Method for solving the nonlinear inverse problem in gas face seal diagnosis based on surrogate models

Journal Article

Simulation of bubble column reactors using CFD coupled with a population balance model

Tiefeng WANG

Journal Article

Principle and status of technique of smoothed particle hydrodynamics and heat conduction model

Wang Yuheng,Liu Feng,Song Fengmei

Journal Article

Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

Journal Article