Results 21 to 30 of about 25,319 (259)
Strain Softening in Stretched DNA [PDF]
Physical Review Letters, 2008 The microscopic mechanics of DNA stretching was characterized using extensive molecular dynamics simulations. By employing an anisotropic pressure-control method, realistic force-extension dependences of effectively infinite DNA molecules were obtained. A coexistence of B and S DNA domains was observed during the overstretching transition.
Binquan, Luan, Aleksei, Aksimentiev
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Strain-Softening Characteristics of Hydrate-Bearing Sediments and Modified Duncan–Chang Model
Advances in Materials Science and Engineering, 2021 Marine hydrate exploitation may trigger the seabed geological disaster, such as seafloor collapse and landslide. It is critically important to understand the mechanical properties of hydrate-bearing sediment.
Mengqiu Yan, Rongtao Yan, Haihao Yu
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Discretization influence in strain—softening problems [PDF]
Engineering Computations, 1995 The dispersive behaviour of waves in softening problems is analysed. Attention is focused on the influence of the numerical scheme on the dispersion characteristics in the process of localization of deformation. Distinction has been made between softening models defined in a standard plasticity framework and in a gradient‐dependent plasticity theory ...
Sluys, L.J. (author) +2 more
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On viscoplastic regularisation of strain‐softening rocks and soils [PDF]
International Journal for Numerical and Analytical Methods in Geomechanics, 2020 SummaryConstitutive models for rocks and soils typically incorporate some form of strain softening. Moreover, many plasticity models for frictional materials use a nonassociated flow rule. Strain softening and nonassociated flow rules can cause loss of well‐posedness of the initial‐value problem, which can lead to a severe mesh dependence in ...
de Borst, René, Duretz, Thibault
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Breathers in lattices with alternating strain-hardening and strain-softening interactions
Physical Review E, 2023 This work focuses on the study of time-periodic solutions, including breathers, in a nonlinear lattice consisting of elements whose contacts alternate between strain-hardening and strain-softening. The existence, stability, and bifurcation structure of such solutions, as well as the system dynamics in the presence of damping and driving are studied ...
M. M. Lee +4 more
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Strain Softening in Viscoelasticity of the Rate Type [PDF]
Journal of Integral Equations and Applications, 1990 The paper is concerned with the study of the system of partial differential equations \(v_ t=\sigma_ x\), \(u_ t=v_ x\), \(\sigma=\tau(u)v_ x^ n\), where \(\tau(u)\) is a prescribed constitutive function and \(n\) is a positive parameter. These equations describe the plastic shearing of an infinite plate.
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Strain Softened Bending Modulus of Graphene Oxide
SSRN Electronic Journal, 2021 Graphene oxide is attractive in flexible materials due to its biocompatibility. Herein, flexibility of graphene oxide under uniaxial tensile strain has been studied in term of the bending modulus. It is demonstrated that tensile strain plays an effective role in softening the bending modulus of graphene oxide.
Songding Yu +3 more
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Numerical simulation of bearing capacity of a strip footing on strain-softening soil ground
Yantu gongcheng xuebao, 2019 To overcome the mesh sensitivity induced by strain softening, an implicit gradient plasticity model is put forward to simulate the bearing capacity of a rigid strip foundation on strain-softening soil.
LÜ Xi-lin 1, 2, XUE Da-wei 1, 2
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Advances in Civil Engineering, 2018 Based on the triaxial test, the elasto-perfectly plastic strain-softening damage model (EPSDM) is proposed as a new four-stage constitutive model. Compared with traditional models, such as the elasto-brittle-plastic model (EBM), elasto-strain-softening ...
Liang Chen +5 more
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The mechanism of stability of fault system inducing roof water-inrush
Energy Exploration & Exploitation, 2020 This paper analyzes the strain stability during mining, which often causes a water inrush. Mining couses costant stress on the fault zone, which is a loading process on the system composed of fault material and surrounding medium.
Ma Zhijing +7 more
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