Resource Type

Journal Article 1140

Conference Videos 8

Year

2023 71

2022 86

2021 81

2020 75

2019 59

2018 50

2017 47

2016 46

2015 56

2014 51

2013 45

2012 49

2011 45

2010 57

2009 58

2008 49

2007 50

2006 29

2005 31

2004 21

open ︾

Keywords

numerical simulation 18

model 15

model test 15

mathematical model 14

finite element method 10

kinetic model 10

residual stress 10

COVID-19 7

optimization 7

uncertainty 7

Deep learning 6

sensitivity analysis 6

stress 6

concrete 5

constitutive model 5

deformation 5

simulation 5

China 4

Machine learning 4

open ︾

Search scope:

排序： Display mode:

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 publishedtank and the local characteristics of trailing vortices near the blade tips can be captured by the SSGThe 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    

HTML PDF Collect

Improved analytical model for residual stress prediction in orthogonal cutting

Zhaoxu QI,Bin LI,Liangshan XIONG

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 249-256 doi: 10.1007/s11465-014-0310-1

Abstract:

The analytical model of residual stress in orthogonal cutting proposed by Jiann is an important toolIn application of the model, a problem of low precision of the surface residual stress prediction isboundary conditions, unreasonable calculation method of thermal stress, ignorance of stress constraintwith the real cutting process; an improved calculation method of thermal stress is adopted; a stressAlso, Jiann’s model and the improved model are simulated under the same conditions with cutting

Keywords： residual stress     analytical model     orthogonal cutting     cutting force     cutting temperature    

HTML PDF Collect

Spectral reflectance indices as proxies for yield potential and heat stress tolerance in spring wheat

REYNOLDS

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 3,   Pages 296-308 doi: 10.15302/J-FASE-2019269

Abstract: application of spectral reflectance indices (SRIs) as proxies to screen for yield potential (YP) and heat stress

Keywords： genome-wide association study (GWAS)     heat tolerance     spectral reflectance     spring wheat    

HTML PDF Collect

Kinetic energy based model assessment and sensitivity analysis of vortex induced vibration of segmental

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 480-501 doi: 10.1007/s11709-017-0435-5

Abstract: In this paper, semi 3D models for segmental Bridge decks are created in ABAQUS CFD program with the support of MATLAB codes to simulate and analyze vortex shedding generated due to wind excitation through considering the stationary position of the deck. Three parameters (wind speed, deck streamlined length and dynamic viscosity of the air) are dedicated to study their effects on the kinetic energy of the system in addition to the shapes and patterns of the vortices. Two benchmarks from the literature Von Karman and Dyrbye and Hansen are considered to validate the vortex shedding aspects for the CFD models. Good agreement between the results of the benchmarks and the semi 3D models has been detected. Latin hypercube experimental method is dedicated to generate the surrogate models for the kinetic energy of the system and the lift forces. Variance based sensitivity analysis is utilized to calculate the main sensitivity indices and the interaction orders for all the three parameters. The kinetic energy approach performed very well in revealing the rational effects and the roles of each parameter in the generation of vortex shedding and predicting vortex induced vibration of the deck.

Keywords： vortex induced vibration     reynolds number     kinetic energy     vorticity     latin hypercube sampling    

HTML PDF Collect

Multiscale model of micro curing residual stress evolution in carbon fiber-reinforced thermoset polymer

Xinyu HUI, Yingjie XU, Weihong ZHANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 475-483 doi: 10.1007/s11465-020-0590-6

Abstract: A thermochemical coupling model is developed at the macroscale level to obtain the distributions of temperatureMeanwhile, a representative volume element model of the composites is established at the microscale levelinformation from the macroscale perspective, the curing residual stresses are calculated using the microscale model

Keywords： CFRP     curing residual stress     multiscale modeling     finite element method    

HTML PDF Collect

Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 429-447 doi: 10.1007/s11709-022-0913-2

Abstract: Subsequently, the stress−strain curves of specimens subjected to axial loading were measured.cohesive-elastic ring model and modified elastic beam theory.Moreover, a damage-constitutive model of CAC considering the lateral stress was set up based on damageThe lateral stress model showed a good agreement with the experimental data, and the proposed damage-constitutivemodel had a good correlation with the measured stress−strain curves.

Keywords： coral aggregate concrete     stress−strain curves     lateral effective stress     peak stress     axial−lateralcurves     damage-constitutive model.    

HTML PDF Collect

Predictive model to decouple the contributions of friction and plastic deformation to machined surfacetemperatures and residual stress patterns in finish dry cutting

Subhash ANURAG, Yuebin GUO,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 247-255 doi: 10.1007/s11465-010-0097-7

Abstract: This study provides a finite element method based on a predictive model to decouple the contributionsResidual stress reversal from subsurface maximum residual to surface maximum residual stress may occur

Keywords： surface temperature     friction     residual stress     finite element analysis (FEA)     dry cutting     tool property    

HTML PDF Collect

The formation mechanism and the influence factor of residual stress in machining

Zhaoxu QI,Bin LI,Liangshan XIONG

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 265-269 doi: 10.1007/s11465-014-0311-0

Abstract: On the basis of the analytical model for residual stress, a series of simulations for residual stressorder to obtain the influences of cutting speed, depth of cut and tool edge radius on surface residual stressAnd these influences are explained from the perspective of formation mechanism of residual stress in

Keywords： residual stress     analytical model     strain     plastic     cutting parameter    

HTML PDF Collect

Research and development of a high-quality thermal-stress online monitoring model for the 600 MW turbine

ZHANG Hengliang, XIE Danmei, XIONG Yangheng, SUN Kunfeng

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 322-326 doi: 10.1007/s11708-007-0047-1

Abstract: To monitor and control its thermal state, a rotor s temperature and thermal stress fields must be calculatedThe result shows that the analytical model gained has high quality and the computing course is very short
HTML PDF Collect

Thermal fluid-structure interaction and coupled thermal-stress analysis in a cable stayed bridge exposed

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 609-628 doi: 10.1007/s11709-018-0452-z

Abstract: In this paper, thermal fluid structure-interaction (TFSI) and coupled thermal-stress analysis are utilizedThe results revealed that TFSI models and coupled thermal-stress models are significant in detecting

Keywords： fire scenario     transient heat transfer     TFSI model     coupled thermal-stress     XFEM    

HTML PDF Collect

A time−space porosity computational model for concrete under sulfate attack

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0985-7

Abstract: This study proposes a mechanical–chemical model to simulate the spatiotemporal distribution of the porosityIn addition, the expansion strain at the macro-scale is obtained using a stress analysis model of compositeThe results demonstrate that the expansion strains calculated using the suggested model agree well withThe proposed model can forecast and assess the porosity of concrete covers and provide a credible approach

Keywords： expansion deformation     porosity     internal expansion stress     external sulfate attack     mechanical–chemicalcoupling model    

HTML PDF Collect

Convective heat transfer in helical coils for constant-property and variable-property flows with high Reynolds

Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 546-552 doi: 10.1007/s11708-010-0116-8

Abstract: The experiments were conducted over a wide Reynolds number range of 40000 to 500000.contribution of secondary flow in the helical coil to heat transfer was gradually suppressed with increasing Reynoldsof the helical tube were close to those of the straight tube under the same flow conditions when the Reynolds

Keywords： convective heat transfer     helical coils     high Reynolds number     supercritical pressure     variable property    

HTML PDF Collect

An improved algorithm for McDowell’s analytical model of residual stress

Zhaoxu QI,Bin LI,Liangshan XIONG

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2,   Pages 150-155 doi: 10.1007/s11465-014-0295-9

Abstract:

The analytical model for two-dimensional elastoplastic rolling/sliding contact proposed by McDowellis an important tool for predicting residual stress in rolling/sliding processes.In application of the model, a problem of low predicting precision near the surface layer of the componentis proposed in order to improve its predicting accuracy of the surface residual stress.The simulation results show that the surface residual stress predicted by modified method is much closer

Keywords： residual stress     McDowell’s model     volume-constancy of plastic deformation     FEM     elastoplastic rolling/sliding    

HTML PDF Collect

A model for creep life prediction of thin tube using strain energy density as a function of stress triaxiality

Tahir MAHMOOD, Sangarapillai KANAPATHIPILLAI, Mahiuddin CHOWDHURY

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 181-186 doi: 10.1007/s11465-013-0257-7

Abstract:

This paper demonstrates the application of a new multiaxial creep damage model developed by authorsusing stress traixiality to predict the failure time of a component made of 0.5%Cr-0.5%Mo-0.25%V lowcalculated and can be converted to multi-axial strain energy density by multiplying it to a function of stresstrixiality which is a ratio of mean stress to equivalent stress.The predicted failure times by the model are compared with the experimental results.

Keywords： elastic-creep     elastic-plastic-creep     stress triaxiality     life prediction     pressure vessels     finite element    

HTML PDF Collect

Shear stress distribution prediction in symmetric compound channels using data mining and machine learning

Zohreh SHEIKH KHOZANI, Khabat KHOSRAVI, Mohammadamin TORABI, Amir MOSAVI, Bahram REZAEI, Timon RABCZUK

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1097-1109 doi: 10.1007/s11709-020-0634-3

Abstract: Shear stress distribution prediction in open channels is of utmost importance in hydraulic structuralThe shear stress values around the whole wetted perimeter were measured in the compound channel withwell-known analytical models of Shiono and Knight method (SKM) and Shannon method to acquire the proposed modelfunctioning in predicting the shear stress distribution.The results showed that the RF model has the best prediction performance compared to SKM and Shannon

Keywords： compound channel     machine learning     SKM model     shear stress distribution     data mining models    

HTML PDF Collect

Title Author Date Type Operation

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

Improved analytical model for residual stress prediction in orthogonal cutting

Zhaoxu QI,Bin LI,Liangshan XIONG

Journal Article

Spectral reflectance indices as proxies for yield potential and heat stress tolerance in spring wheat

REYNOLDS

Journal Article

Kinetic energy based model assessment and sensitivity analysis of vortex induced vibration of segmental

Nazim Abdul NARIMAN

Journal Article

Multiscale model of micro curing residual stress evolution in carbon fiber-reinforced thermoset polymer

Xinyu HUI, Yingjie XU, Weihong ZHANG

Journal Article

Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected

Journal Article

Predictive model to decouple the contributions of friction and plastic deformation to machined surfacetemperatures and residual stress patterns in finish dry cutting

Subhash ANURAG, Yuebin GUO,

Journal Article

The formation mechanism and the influence factor of residual stress in machining

Zhaoxu QI,Bin LI,Liangshan XIONG

Journal Article

Research and development of a high-quality thermal-stress online monitoring model for the 600 MW turbine

ZHANG Hengliang, XIE Danmei, XIONG Yangheng, SUN Kunfeng

Journal Article

Thermal fluid-structure interaction and coupled thermal-stress analysis in a cable stayed bridge exposed

Nazim Abdul NARIMAN

Journal Article

A time−space porosity computational model for concrete under sulfate attack

Journal Article

Convective heat transfer in helical coils for constant-property and variable-property flows with high Reynolds

Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG

Journal Article

An improved algorithm for McDowell’s analytical model of residual stress

Zhaoxu QI,Bin LI,Liangshan XIONG

Journal Article

A model for creep life prediction of thin tube using strain energy density as a function of stress triaxiality

Tahir MAHMOOD, Sangarapillai KANAPATHIPILLAI, Mahiuddin CHOWDHURY

Journal Article

Shear stress distribution prediction in symmetric compound channels using data mining and machine learning

Zohreh SHEIKH KHOZANI, Khabat KHOSRAVI, Mohammadamin TORABI, Amir MOSAVI, Bahram REZAEI, Timon RABCZUK

Journal Article