Results 101 to 110 of about 251 (141)

Permanent Deformation Behavior of Granular Materials and the Shakedown Concept

Transportation Research Record: Journal of the Transportation Research Board, 2001
The shakedown concept has been used to describe the behavior of conventional engineering structures under repeated cyclic loading. The possibility has been raised that a critical stress level exists between stable and unstable conditions in pavement. According to the “shakedown” concept, this level is termed the “shakedown limit.” Several repeated load
Sabine Werkmeister, Andrew R. Dawson, Frohmut Wellner   +2 more
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Evaluation of the Shakedown Behavior of Unbound Granular Base Materials

Geo-Frontiers 2011, 2011
The shakedown theory concept has been successfully used to characterize the response of unbound granular base materials in a pavement structure. Within this concept, two stress limits are used to comprehensively describe the behavior of granular base materials under cyclic loading: an elastic shakedown limit, below which the material will eventually ...
Munir D. Nazzal, Louay N. Mohammad, Aaron Austin   +2 more
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Shakedown behaviors of railway ballast under cyclic loading

Construction and Building Materials, 2017
Abstract Based on laser scanning technique and discrete element program, the fine mesoscopic model of irregular ballast particles was simulated well by series of bonded disc clusters, then the large-scale static and cyclic loading tests were used to determine the parameters of the discrete element model.
Junhua Xiao, De Zhang, Kai Wei, Zhe Luo
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Seismic behavior of slopes by lower bound dynamic shakedown theory

Computers and Geotechnics, 2012
Abstract Lower bound dynamic shakedown theory is a limit state method. It is employed herein to investigate the safety, which is associated with permanent displacement, of slopes under repeated dynamic loads, mainly earthquakes. An efficient numerical method, previously applied to the static shakedown of pavements, is extended to the dynamic ...
Mohammad Reza Arvin, Faradjollah Askari, Orang Farzaneh   +2 more
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Shakedown Behavior of Yellow River Alluvial Silt Stabilized with Lignin–Lime Combined Additive

Journal of Materials in Civil Engineering, 2020
AbstractThe utilization of Yellow River alluvial silt as the main filler for railway embankments can lead to a series of embankment problems.
Xiaofeng Zhang, Yanmei Zhang, Xiao Liu, Jincheng Liu, Jianlin Liu   +4 more
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Characterizing the permanent deformation Response-Behavior of subgrade material under cyclic loading based on the shakedown theory

Construction and Building Materials, 2021
Abstract Coarse-grained soil is widely used as a filling material in the railway subgrade to provide foundational support to the long-term effects of dynamic (cyclic) train loads transmitted by the track structure. Despite this wide usage, there is limited literature on its permanent deformation behavior characterization under different magnitudes of
Kangyu Wang, Yan Zhuang
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An Investigation on the Effect of Creep Shakedown on the Creep Behavior of an Industrial Gas Turbine Blade

Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy; Honors and Awards, 2015
The creep life computation of gas turbine hot section components using any damage modeling technique requires typical inputs of stress and temperature under actual engine operating conditions. The magnitude of these inputs is governed by the static or dynamic transient loading conditions that a component may be subjected to during service.
Jun Zhao, Ashok K. Koul, Avisekh Banerjee   +2 more
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Experimental Identification of Plastic Shakedown Behaviors of Saturated Clay Subjected to Traffic Loading

Soil Behavior and Geomechanics, 2014
ABSTRACT: Traffic moving loading causes the rotation of principal stress axis and leads to a heart-shaped stress path in the deviatoric stress space. Using Dynamic Hollow Cylinder Apparatus (DHCA), a series of heart-shaped and triaxial cyclic undrained tests were performed on Shanghai saturated soft clay.
J. G. Qian, Y. G. Wang, M. S. Huang, J. F. Xue   +3 more
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Shakedown Behavior of a Continuous Steel Bridge Girder Strengthened With Post-Installed Shear Connectors

Structures, 2016
Abstract An economical method for strengthening non-composite steel girder bridges is to create composite action by “post-installing” shear connectors to engage the steel girder and concrete deck to act as a unit. Concepts of inelastic moment redistribution can be used to further increase the load-carrying capacity of continuous bridges.
Kerry Kreitman, Amir Reza Ghiami Azad, Michael Engelhardt, Todd Helwig, Eric Williamson   +4 more
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Shakedown Behavior of a Two-Layer Beam Considering Ductile Damage Under Thermo-Mechanical Loadings

ASME 2010 Pressure Vessels and Piping Conference: Volume 3, 2010
In this paper, the nonlinear kinematic hardening material based on Armstrong-Fredrick model coupled with ductile damage was used to estimate the shakedown behavior of a two-layer beam under constant bending moment and cyclic temperature loads. The shakedown limit loads were determined by the accumulation of plastic straining after enough cycles under ...
Xiao-Tao Zheng, Fu-Zhen Xuan
openaire   +1 more source