Resource Type

Journal Article 1123

Conference Videos 12

Year

2023 77

2022 95

2021 81

2020 88

2019 57

2018 53

2017 57

2016 49

2015 52

2014 53

2013 42

2012 46

2011 41

2010 47

2009 48

2008 42

2007 40

2006 29

2005 27

2004 26

open ︾

Keywords

numerical simulation 16

model 15

model test 15

mathematical model 14

kinetic model 10

uncertainty 9

sensitivity analysis 8

COVID-19 7

optimization 7

Deep learning 6

constitutive model 5

finite element analysis 5

simulation 5

China 4

Machine learning 4

development model 4

neural network 4

numerical model 4

sustainable development 4

open ︾

Search scope:

排序： Display mode:

Regional seismic-damage prediction of buildings under mainshock–aftershock sequence

Xinzheng LU, Qingle CHENG, Zhen XU, Chen XIONG

Frontiers of Engineering Management 2021, Volume 8, Issue 1,   Pages 122-134 doi: 10.1007/s42524-019-0072-x

Abstract: Strong aftershocks generally occur following a significant earthquake. Aftershocks further damage buildings weakened by mainshocks. Thus, the accurate and efficient prediction of aftershock-induced damage to buildings on a regional scale is crucial for decision making for post-earthquake rescue and emergency response. A framework to predict regional seismic damage of buildings under a mainshock–aftershock (MS–AS) sequence is proposed in this study based on city-scale nonlinear time-history analysis (THA). Specifically, an MS–AS sequence-generation method is proposed to generate a potential MS–AS sequence that can account for the amplification, spectrum, duration, magnitude, and site condition of a target area. Moreover, city-scale nonlinear THA is adopted to predict building seismic damage subjected to MS–AS sequences. The accuracy and reliability of city-scale nonlinear THA for an MS–AS sequence are validated by as-recorded seismic responses of buildings and simulation results in published literature. The town of Longtoushan, which was damaged during the Ludian earthquake, is used as a case study to illustrate the detailed procedure and advantages of the proposed framework. The primary conclusions are as follows. (1) Regional seismic damage of buildings under an MS–AS sequence can be predicted reasonably and accurately by city-scale nonlinear THA. (2) An MS–AS sequence can be generated reasonably by the proposed MS–AS sequence-generation method. (3) Regional seismic damage of buildings under different MS–AS scenarios can be provided efficiently by the proposed framework, which in turn can provide a useful reference for earthquake emergency response and scientific decision making for earthquake disaster relief.

Keywords： seismic damage prediction     city-scale nonlinear time-history analysis     mainshock–aftershock sequence     multipledegree-of-freedom (MDOF) model     2014 Ludian earthquake    

HTML PDF Collect

Error analysis and optimization of a 3-degree of freedom translational Parallel Kinematic Machine

S. SHANKAR GANESH,A. B. KOTESWARA RAO

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2,   Pages 120-129 doi: 10.1007/s11465-014-0300-3

Abstract:

In this paper, error modeling and analysis of a typical 3-degree of freedom translational Parallel

Keywords： translational Parallel Kinematic Machine     error modeling     global error transformation index    

HTML PDF Collect

On the location of the secondary instantaneous poles in two-degree-of-freedom spherical mechanisms

Soheil ZARKANDI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 34-40 doi: 10.1007/s11465-014-0290-1

Abstract: presents a theorem showing analytically that the locus of an unknown secondary instant pole in two-degree-of-freedom

Keywords： spherical mechanisms     instantaneous poles     great circle     angular velocity    

HTML PDF Collect

Stiffness of a 3-degree of freedom translational parallel kinematic machine

S. SHANKAR GANESH,A.B. KOTESWARA RAO

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 233-241 doi: 10.1007/s11465-014-0312-z

Abstract:

In this paper, a typical 3-degree of freedom (3-DOF) translational parallel kinematic machine

Keywords： 3-DOF translational PKM     inverse kinematics     stiffness modeling     translational stiffness    

HTML PDF Collect

Singularity loci of an orthogonal spherical two-degree-of-freedom parallel mechanism

Jialun YANG, Feng GAO,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 379-385 doi: 10.1007/s11465-009-0075-0

Abstract: In this paper, the direct and inverse kinematics of an orthogonal spherical two-degree-of-freedom parallel

Keywords： 2-DOF orthogonal spherical parallel mechanism     singularity loci     self-motions    

HTML PDF Collect

A survey of instantaneous poles for a class of two-degree-of-freedom spherical mechanisms

Soheil ZARKANDI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4,   Pages 344-353 doi: 10.1007/s11465-014-0320-z

Abstract:

This paper is a detailed exploration of instantaneous poles for a class of two-degree-of-freedom (

Keywords： spherical mechanisms     instantaneous poles     Aronhold-Kennedy theorem     great circles     pencil of meridian    

HTML PDF Collect

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:

In response to the identification problem concerning multi-degree of freedom (MDOF) nonlinear systemsThe proposed parametrical model is based on the non-linear autoregressive with exogenous inputs (NARX) model and aims to explicitly reveal the physical design parameters of the system.The PRESS-based EFOR algorithm is proposed to identify such a model for MDOF systems.output response, thus providing a theoretical basis for the optimal design of modeling methods for MDOF

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

HTML PDF Collect

Model-free adaptive control for three-degree-of-freedom hybrid magnetic bearings Article

Ye YUAN, Yu-kun SUN, Qian-wen XIANG, Yong-hong HUANG, Zhi-ying ZHU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 12,   Pages 2035-2045 doi: 10.1631/FITEE.1700324

Abstract: The effectiveness of control deteriorates based on an inaccurate mathematical model, creating slow responseTo solve these problems, a model-free adaptive control (MFAC) scheme is proposed for a three-degree-of-freedomdepends only on the control current and the objective balanced position, and it does not involve any modelThe design process of a parameter estimation algorithm is model-free, based directly on pseudo-partial-derivative

Keywords： Model-free adaptive control     Hybrid magnetic bearings     Nonlinear areas     Faster response     Higher stability    

HTML PDF Collect

Development of dimensionless P-I diagram for curved SCS sandwich shell subjected to uniformly distributed blast pressure

Yonghui WANG, Ximei ZHAI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1432-1445 doi: 10.1007/s11709-019-0566-y

Abstract: The curved SCS sandwich shell was equivalent to a single-degree-of-freedom (SDOF) system and the equation

Keywords： blast loading     curved steel-concrete-steel sandwich shell     Pressure-Impulse diagram     single-degree-of-freedom    

HTML PDF Collect

Analysis of synergy degree and its influencing factors in hydropower EPC project management

Jiwei ZHU, Hua GAO, Jiangrui WANG

Frontiers of Engineering Management 2021, Volume 8, Issue 3,   Pages 402-411 doi: 10.1007/s42524-020-0098-0

Abstract: In this work, a three-dimensional system and a system model of hydropower EPC project management synergyFurthermore, the evaluation index system and the degree of synergy model are established, and grey relationalanalysis is utilized to identify the key factors that affect the synergy degree.Results show that the order degree of each subsystem presents a steady upward trend.restriction on the further improvement of the synergy degree of EPC project management.

Keywords： hydropower project     EPC mode     synergy degree model     grey relational analysis    

HTML PDF Collect

An assessment of surrogate fuel using Bayesian multiple kernel learning model in sight of sooting tendency

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 277-291 doi: 10.1007/s11708-021-0731-6

Abstract: Based on the database, a novel predicting model of YSI values for surrogate fuels was proposed with theapplication of a machine learning method, named the Bayesian multiple kernel learning (BMKL) model.A high correlation coefficient (0.986) between measured YSIs and predicted values with the BMKL modelwas obtained, indicating that the BMKL model had a reliable and accurate predictive capacity for YSIThe BMKL model provides an accurate and low-cost approach to assess surrogate performances of diesel,

Keywords： sooting tendency     yield sooting index     Bayesian multiple kernel learning     surrogate assessment     surrogate    

HTML PDF Collect

Accurate two-degree-of-freedom discrete-time current controller design for PMSM using complex vectors None

Meng WANG, Jia-qiang YANG, Xiang ZHANG, Chang-sheng ZHU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 4,   Pages 569-581 doi: 10.1631/FITEE.1601390

Abstract: design method in the discrete-time domain is adopted using the accurate discrete-time complex vector modelAn integrated accurate hold-equivalent discrete model for PMSM is derived considering the differenceThen an accurate two-degree-of-freedom (2DOF) current controller with a third-order closed-loop transferThe 2DOF controller has more freedom in pole placement, and two schemes with a different cancelled pole-zero

Keywords： Permanent magnet synchronous machine (PMSM)     Discrete-time current controller     Complex vector    

HTML PDF Collect

Iterative finite element model of nonlinear viscoplastic analyses for blended granular porous media

WU Yuching, ZHU Cimian

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 464-473 doi: 10.1007/s11709-007-0063-6

Abstract: The iterative finite element model, in which an element is used to represent a single particle, is generatedto analyze the global behavior of multiple-material aggregates of materially nonlinear viscoplastic

Keywords： nonlinear viscoplastic     iterative     behavior     multiple-material    

HTML PDF Collect

Fused-like angles: replacement for roll-pitch-yaw angles for a six-degree-of-freedom grating interferometer Research Article

Di Chang, Pengcheng Hu, Jiubin Tan,di.chang@hit.edu.cn,hupc@hit.edu.cn,jbtan@hit.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 12,   Pages 1551-1684 doi: 10.1631/FITEE.2000432

Abstract: is important in a six-degree-of-freedom but only a few studies have focused on this topic.angles, widely used in aviation, navigation, and robotics, are now being brought to the field of multi-degree-of-freedomhave already been used in research on the kinematic model and decoupling algorithm of the six-degree-of-freedom

Keywords： 无偏溯源角；光栅干涉仪；六自由度测量；角度表达方法    

HTML PDF Collect

Study on the Universality of the Normal Cloud Model

Li Deyi,Liu Changyu

Strategic Study of CAE 2004, Volume 6, Issue 8,   Pages 28-34

Abstract: distribution but also make the normal membership function be the expectation of the random membership degreeIn this paper, the universality of the normal cloud model is proved,which is more superior and easier

Keywords： normal distribution function     membership degree     normal cloud model     granularity     universality    

HTML PDF Collect

Title Author Date Type Operation

Regional seismic-damage prediction of buildings under mainshock–aftershock sequence

Xinzheng LU, Qingle CHENG, Zhen XU, Chen XIONG

Journal Article

Error analysis and optimization of a 3-degree of freedom translational Parallel Kinematic Machine

S. SHANKAR GANESH,A. B. KOTESWARA RAO

Journal Article

On the location of the secondary instantaneous poles in two-degree-of-freedom spherical mechanisms

Soheil ZARKANDI

Journal Article

Stiffness of a 3-degree of freedom translational parallel kinematic machine

S. SHANKAR GANESH,A.B. KOTESWARA RAO

Journal Article

Singularity loci of an orthogonal spherical two-degree-of-freedom parallel mechanism

Jialun YANG, Feng GAO,

Journal Article

A survey of instantaneous poles for a class of two-degree-of-freedom spherical mechanisms

Soheil ZARKANDI

Journal Article

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

Haopeng LIU, Yunpeng ZHU, Zhong LUO, Qingkai HAN

Journal Article

Model-free adaptive control for three-degree-of-freedom hybrid magnetic bearings

Ye YUAN, Yu-kun SUN, Qian-wen XIANG, Yong-hong HUANG, Zhi-ying ZHU

Journal Article

Development of dimensionless P-I diagram for curved SCS sandwich shell subjected to uniformly distributed blast pressure

Yonghui WANG, Ximei ZHAI

Journal Article

Analysis of synergy degree and its influencing factors in hydropower EPC project management

Jiwei ZHU, Hua GAO, Jiangrui WANG

Journal Article

An assessment of surrogate fuel using Bayesian multiple kernel learning model in sight of sooting tendency

Journal Article

Accurate two-degree-of-freedom discrete-time current controller design for PMSM using complex vectors

Meng WANG, Jia-qiang YANG, Xiang ZHANG, Chang-sheng ZHU

Journal Article

Iterative finite element model of nonlinear viscoplastic analyses for blended granular porous media

WU Yuching, ZHU Cimian

Journal Article

Fused-like angles: replacement for roll-pitch-yaw angles for a six-degree-of-freedom grating interferometer

Di Chang, Pengcheng Hu, Jiubin Tan,di.chang@hit.edu.cn,hupc@hit.edu.cn,jbtan@hit.edu.cn

Journal Article

Study on the Universality of the Normal Cloud Model

Li Deyi,Liu Changyu

Journal Article