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PRESS-based EFOR algorithm for the dynamic parametrical modeling of nonlinear MDOF systems

Haopeng LIU, Yunpeng ZHU, Zhong LUO, Qingkai HAN

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 390-400 doi: 10.1007/s11465-017-0459-5

Abstract: orthogonal regression (EFOR) based on predicted residual sums of squares (PRESS) to construct a nonlinear dynamicMoreover, a 5-DOF nonlinear system is taken as a case to illustrate the modeling of the proposed algorithmFinally, a dynamic parametrical model of a cantilever beam is constructed from experimental data.Results indicate that the dynamic parametrical model of nonlinear systems, which depends on the PRESS-basedaccurately predict the output response, thus providing a theoretical basis for the optimal design of modeling

Keywords： MDOF     dynamic parametrical model     NARX model     PRESS-based EFOR     cantilever beam    

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Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 9-9 doi: 10.1007/s11465-021-0665-z

Abstract: Based on the mesh stiffness and USTE considering gear wear, a gear dynamic model is established, andComparison with the experimental results verifies the proposed dynamic model based on the new mesh relationship

Keywords： gear wear     mesh relationship     mesh stiffness     transmission error     vibration characteristics    

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Special issue: Wind turbine dynamic modeling, condition monitoring and diagnosis

Zheng YOU, Jinji GAO, Fulei CHU, Tielin SHI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 279-280 doi: 10.1007/s11465-017-0476-4

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Dynamic modeling of hydrostatic guideway considering compressibility and inertia effect

Yikang DU,Kuanmin MAO,Yaming ZHU,Fengyun WANG,Xiaobo MAO,Bin LI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 78-88 doi: 10.1007/s11465-015-0331-4

Abstract: To improve the dynamic characteristic of bearing structure, the dynamic modeling of the hydrostatic guidwayTo determine the dynamic model coefficients, numerical simulation of different cases between displacementand dynamic force of oil film are performed with fluent code.Based on a dynamic model and numerical simulation, every dynamic model’s parameters are calculatedThis paper provides a reference and preparation for the analysis of the dynamic model of the similar

Keywords： hydrostatic guidway     dynamic model     dynamic mesh technique     Levenberg-Marquardt     mass-spring-damper model    

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Integration of molecular dynamic simulation and free volume theory for modeling membrane VOC/gas separation

Bo Chen, Yan Dai, Xuehua Ruan, Yuan Xi, Gaohong He

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2,   Pages 296-305 doi: 10.1007/s11705-018-1701-3

Abstract: Although molecular dynamic (MD) simulation can mimic those complex effects, it cannot precisely predictThis work proposes a method for modeling a membrane separation process for volatile organic compounds

Keywords： membrane vapor separation     membrane process modeling     process engineering     free volume theory     volatile organic    

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Finite element modeling of cable sliding and its effect on dynamic response of cable-supported truss

Yujie YU, Zhihua CHEN, Renzhang YAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1227-1242 doi: 10.1007/s11709-019-0551-5

Abstract: A analytical method that considers the dynamic cable sliding effect is proposed in this paper.Cable sliding behaviors and the resultant dynamic responses are solved by combining the vector form intrinsicThe proposed analytical method is achieved within MATLAB and applied to simulate the dynamic response

Keywords： sliding cable     explicit solution framework     original length method     seismic response     cable rupture    

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Modeling of dynamic response of poroelastic soil layers under wave loading

Mehmet Bar?? Can üLKER

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1,   Pages 1-18 doi: 10.1007/s11709-014-0233-2

Abstract: In this paper, the dynamic response of saturated and layered soils under harmonic waves is modeled usingThe equations governing the dynamics of porous media are written in their fully dynamic form and possiblenon-dimensional parameters and their respective ratios as a result of layering play a major role in the dynamic

Keywords： dynamic response of soils     coupled flow-deformation     finite elements     analytical solution     harmonic waves    

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of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational fluid dynamicand reaction kinetic modeling

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1149-1163 doi: 10.1007/s11705-021-2096-0

Abstract: The novelty of this work is the computational fluid dynamic model combined with the novel carbon dioxide

Keywords： carbon dioxide photoreduction     computational fluid dynamic simulation     kinetic model     Langmuir adsorption    

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Dynamic response surface methodology using Lasso regression for organic pharmaceutical synthesis

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 221-236 doi: 10.1007/s11705-021-2061-y

Abstract: To study the dynamic behavior of a process, time-resolved data are collected at different time instantsa series of experiments, which are usually designed with the design of experiments or the design of dynamicFor utilizing such time-resolved data to model the dynamic behavior, dynamic response surface methodology(DRSM), a data-driven modeling method, has been proposed.

Keywords： data-driven modeling     pharmaceutical organic synthesis     Lasso regression     dynamic response surface methodology    

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A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot

Kejia LI, Xilun DING, Marco CECCARELL

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 219-230 doi: 10.1007/s11465-012-0320-9

Abstract:

This article focuses on the dynamic index and performance of a radial symmetric six-legged robot.Then the dynamic model is formulated as based on the Lagrange equations.robot is obtained by a parametric analysis of robot performance through simulation using the presented dynamic

Keywords： six-legged robots     dynamic modeling     performance index    

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Simulate oil spill weathering with system dynamic model

Aihaiti KASIMU, Junran DONG, Yuan BIAN, Desheng WU

Frontiers of Engineering Management   Pages 696-696 doi: 10.1007/s42524-019-0060-1

Abstract: A system dynamic model is thus developed based on the most significant oil weathering processes, which

Keywords： oil spill     weathering     modeling     system dynamics    

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The computational fluid dynamic modeling of downwash flow field for a six-rotor UAV

Yongjun ZHENG, Shenghui YANG, Xingxing LIU, Jie WANG, Tomas NORTON, Jian CHEN, Yu TAN

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 2,   Pages 159-167 doi: 10.15302/J-FASE-2018216

Abstract: The downwash flow field of the multi-rotor unmanned aerial vehicle (UAV), formed by propellers during operation, has a significant influence on the deposition, drift and distribution of droplets as well as the spray width of the UAV for plant protection. To study the general characteristics of the distribution of the downwash airflow and simulate the static wind field of multi-rotor UAVs in hovering state, a 3D full-size physical model of JF01-10 six-rotor plant protection UAV was constructed using SolidWorks. The entire flow field surrounding the UAV and the rotation flow fields around the six rotors were established in UG software. The physical model and flow fields were meshed using unstructured tetrahedral elements in ANSYS software. Finally, the downwash flow field of UAV was simulated. With an increased hovering height, the ground effect was reduced and the minimum current velocity increased initially and then decreased. In addition, the spatial proportion of the turbulence occupied decreased. Furthermore, the appropriate operational hovering height for the JF01-10 is considered to be 3 m. These results can be applied to six-rotor plant protection UAVs employed in pesticide spraying and spray width detection.

Keywords： CFD simulation     downwash flow field     numerical analysis     plant protection     six-rotor UAV    

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Comprehensive analysis of the influence of structural and dynamic parameters on the accuracy of nano-precision

Chengyuan LIANG, Fang YUAN, Xuedong CHEN, Wei JIANG, Lizhan ZENG, Xin LUO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 255-272 doi: 10.1007/s11465-019-0538-x

Abstract: The complex dynamic characteristics of mechanical structure of a stage, which are determined by structuraland dynamic parameters, exert a serious influence on the accuracy of its motion and measurement.A systematic approach to modeling the dynamic accuracy of a nano-precision positioning stage is developedin this work by integrating a multi-rigid-body dynamic model of the mechanical system and measurementThe approach is programmed and integrated into a software framework that supports the dynamic design

Keywords： nano-precision positioning stage     analysis and design     structural and dynamic parameters     dynamic accuracy     systematic modeling    

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Dynamic fate modeling of γ-hexachlorocyclohexane in the lower reaches of the Liao River

LIU Zhenyu, YANG Fenglin, QUAN Xie, ZHANG Xiaohong

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 166-171 doi: 10.1007/s11783-007-0029-x

Abstract: Modeling results show that γ-HCH fugacity capacities in air, water, and sediment increase as temperature

Keywords： coefficient     POPs     temperature     sediment increase     dependent    

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Dynamic modeling of flexible-links planar parallel robots

DU Zhaocai, YU Yueqing, ZHANG Xuping, DU Zhaocai

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 232-237 doi: 10.1007/s11465-008-0032-3

Abstract: This paper presents a finite element-based method for dynamic modeling of parallel robots with flexibleThe kinematic constraint conditions and dynamic constraint conditions for elastic displacements are presenteddisplacements, the Kineto-Elasto dynamics (KED) theory and Lagrange formula are used to derive the dynamicThe dynamic behavior of the flexible-links planar parallel robot is well illustrated through numerical

Keywords： 3-RR parallel     KED     coupling     software SAMCEF     orientation    

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Title Author Date Type Operation

PRESS-based EFOR algorithm for the dynamic parametrical modeling of nonlinear MDOF systems

Haopeng LIU, Yunpeng ZHU, Zhong LUO, Qingkai HAN

Journal Article

Mesh relationship modeling and dynamic characteristic analysis of external spur gears with gear wear

Journal Article

Special issue: Wind turbine dynamic modeling, condition monitoring and diagnosis

Zheng YOU, Jinji GAO, Fulei CHU, Tielin SHI

Journal Article

Dynamic modeling of hydrostatic guideway considering compressibility and inertia effect

Yikang DU,Kuanmin MAO,Yaming ZHU,Fengyun WANG,Xiaobo MAO,Bin LI

Journal Article

Integration of molecular dynamic simulation and free volume theory for modeling membrane VOC/gas separation

Bo Chen, Yan Dai, Xuehua Ruan, Yuan Xi, Gaohong He

Journal Article

Finite element modeling of cable sliding and its effect on dynamic response of cable-supported truss

Yujie YU, Zhihua CHEN, Renzhang YAN

Journal Article

Modeling of dynamic response of poroelastic soil layers under wave loading

Mehmet Bar?? Can üLKER

Journal Article

of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational fluid dynamicand reaction kinetic modeling

Journal Article

Dynamic response surface methodology using Lasso regression for organic pharmaceutical synthesis

Journal Article

A total torque index for dynamic performance evaluation of a radial symmetric six-legged robot

Kejia LI, Xilun DING, Marco CECCARELL

Journal Article

Simulate oil spill weathering with system dynamic model

Aihaiti KASIMU, Junran DONG, Yuan BIAN, Desheng WU

Journal Article

The computational fluid dynamic modeling of downwash flow field for a six-rotor UAV

Yongjun ZHENG, Shenghui YANG, Xingxing LIU, Jie WANG, Tomas NORTON, Jian CHEN, Yu TAN

Journal Article

Comprehensive analysis of the influence of structural and dynamic parameters on the accuracy of nano-precision

Chengyuan LIANG, Fang YUAN, Xuedong CHEN, Wei JIANG, Lizhan ZENG, Xin LUO

Journal Article

Dynamic fate modeling of γ-hexachlorocyclohexane in the lower reaches of the Liao River

LIU Zhenyu, YANG Fenglin, QUAN Xie, ZHANG Xiaohong

Journal Article

Dynamic modeling of flexible-links planar parallel robots

DU Zhaocai, YU Yueqing, ZHANG Xuping, DU Zhaocai

Journal Article