Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 6

Year

2011 3

2010 2

Keywords

RAP 1

SHStS transformation 1

behavior of asphalt binder and mixture 1

complex modulus 1

creep 1

deep alluvium 1

defected rock 1

frozen wall 1

harmonic moving load 1

linear viscoelastic model 1

loss modulus 1

magneto-rheological elastomers (MREs) 1

numerical manifold method 1

pasternak viscoelastic foundation 1

porous media 1

radial delimitation model 1

recovery 1

rejuvenation 1

storage modulus 1

stress wave propagation 1

open ︾

Search scope:

排序： Display mode:

Simulation of viscoelastic behavior of defected rock by using numerical manifold method

Feng REN, Lifeng FAN, Guowei MA

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2, Pages 199-207 doi: 10.1007/s11709-011-0102-1

Abstract: Numerical simulations of longitudinal wave propagation in a rock bar with microcracks are conducted by using the numerical manifold method which has great advantages in the simulation of discontinuities. Firstly, validation of the numerical manifold method is carried out by simulations of a longitudinal stress wave propagating through intact and cracked rock bars. The behavior of the stress wave traveling in a one-dimensional rock bar with randomly distributed microcracks is subsequently studied. It is revealed that the highly defected rock bar has significant viscoelasticity to the stress wave propagation. Wave attenuation as well as time delay is affected by the length, quantity, specific stiffness of the distributed microcracks as well as the incident stress wave frequency. The storage and loss moduli of the defected rock are also affected by the microcrack properties; however, they are independent of incident stress wave frequency.

Keywords： stress wave propagation defected rock numerical manifold method viscoelastic behavior storage modulus

HTML PDF Collect

An autonomous system for thermal convection of viscoelastic fluids in a porous layer using a thermal

Qi WEI, Xiaohui ZHANG

Frontiers in Energy 2010, Volume 4, Issue 4, Pages 507-516 doi: 10.1007/s11708-010-0017-x

Abstract: Thermal convection of viscoelastic fluids saturating a horizontal porous layer heated from below is analyzedThe viscoelastic character of the flow is considered by a modified Darcy’s law.The effects of interphase heat transfer on the thermal convection of viscoelastic fluids in a porous

Keywords： thermal convection porous media viscoelastic fluid thermal nonequilibrium model

HTML PDF Collect

Linear viscoelastic behavior of asphalt binders and mixtures containing very high percentages of reclaimed

Frontiers of Structural and Civil Engineering Pages 1211-1227 doi: 10.1007/s11709-023-0983-9

Abstract: The primary aim of this study is to correlate the impact of aggregates, if any, on the viscoelastic behaviorconstructed and Shift-Homothety-Shift in time-Shift (SHStS) transformation was used to compare the linear viscoelasticThe influence of aggregates on the viscoelastic behavior of asphalt mixtures depends on temperature andThe maximum difference (60% to 70%) in the viscoelastic behavior of the binder and mixture based on SHStS

Keywords： RAP complex modulus SHStS transformation rejuvenation behavior of asphalt binder and mixture

HTML PDF Collect

Creep and recovery behaviors of magnetorheological elastomers

Weihua LI, Yang ZHOU, Tongfei TIAN, Gursel ALICI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3, Pages 341-346 doi: 10.1007/s11465-010-0096-8

Abstract: Moreover, a four-parameter viscoelastic model was developed to describe MRE creep behaviors.

Keywords： magneto-rheological elastomers (MREs) creep recovery linear viscoelastic model

HTML PDF Collect

Dynamic analysis of composite beam subjected to harmonic moving load based on the third-order shear deformation theory

Mohammad Javad REZVANIL, Mohammad Hossein KARGARNOVIN, Davood YOUNESIAN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4, Pages 409-418 doi: 10.1007/s11465-011-0245-8

Abstract: The beam is made of laminated composite, and located on a Pasternak viscoelastic foundation.

Keywords： timoshenko composite beam pasternak viscoelastic foundation third-order shear deformation theory (TSDT

HTML PDF Collect

Research progress of the frozen wall thickness in deep alluvium

Shen Wei’an,Wang Jianzhou

Strategic Study of CAE 2011, Volume 13, Issue 11, Pages 89-93

Abstract:

According to the problem of design theory laging behind engineering application, with the thickness increasing of deep alluvium for the freezing shaft-sinking engineering, the frozen wall is regarded as homogeneous and isotropic thick wall cylinder while designing and calculating, and the calculate results based on the elastic and elastic-plastic theory can't apply to the freezing shaft-sinking engineering in the future. In this paper, frozen wall thickness design theory of the present research situation and the existing problems were summarized. The radial creep displacement of heterogeneous frozen wall will reduce 25 % ~ 30 % when the homogeneous frozen wall, so the bearing capacity and deformation performance of frozen wall can befully used and the thickness of frozen wall can be reduced efficiently.

Keywords： frozen wall deep alluvium radial delimitation model viscoelastic