Results 71 to 80 of about 6,221 (226)

Dynamics of the Euler — Bernoully beam with distributed hysteresis properties

open access: yesВестник Самарского университета: Естественнонаучная серия
In this paper, we present a new mathematical approach to the analysis of a beam with distributed hysteresis properties. These hysteresis characteristics are described by two methods: phenomenological (Bouc — Wen model) and constructive (Prandtl ...
Evgeny A. Karpov
doaj   +1 more source

Elastoplastic design theory for ultra-deep frozen wall considering large deformation features

open access: yesYantu gongcheng xuebao, 2019
The freezing method is a key sinking method used in deep aquifer. The frozen-wall design theory is a key technique for the freezing method. However, the previous design theories for a deep artificial frozen wall have neglected the influences of side-wall
ZHANG Bo , YANG Wei-hao , WANG Bao-sheng
doaj   +1 more source

Simulation of Lueders bands using regularized large strain elasto-plasticity

open access: yesArchives of Mechanics, 2021
This paper deals with the numerical simulation of an instability phenomenon called Lueders bands with two regularized material models: viscoplasticity and gradient-enhanced plasticity.
M. Mucha, B. Wcisło, J. Pamin
doaj   +1 more source

Finite Element Modelling of Rocking and Hybrid Precast Walls under Seismic Loading

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT In recent years, self‐centring systems have received considerable research interest in the seismic design of precast concrete structures for their ability to limit damage and satisfy resilience requirements. Rocking and hybrid structural walls, characterised by the formation of a single gap at the wall–foundation interface, mitigate damage by ...
Andrea Belleri   +3 more
wiley   +1 more source

An improved return-mapping scheme for nonsmooth yield surfaces: PART I - the Haigh-Westergaard coordinates

open access: yes, 2015
The paper is devoted to the numerical solution of elastoplastic constitutive initial value problems. An improved form of the implicit return-mapping scheme for nonsmooth yield surfaces is proposed that systematically builds on a subdifferential ...
Blaheta, Radim   +5 more
core   +1 more source

Overview of Thermo-Hydro-Mechanical Constitutive Models for Saturated Cohesive Soils

open access: yesGeosciences
The need to mathematically model and numerically simulate the effect of temperature on the hydro-mechanical behavior of soils, driven by the increased interest in energy geostructures and sundry other geothermal systems, has necessitated the development ...
Meysam Mashayekhi, Victor N. Kaliakin
doaj   +1 more source

Study on Deformation Law of Crossing Layer Drilling Superimposed Floor Roadway

open access: yesEnergy Science &Engineering, EarlyView.
Based on deformation law of crossing layer drilling superimposed floor roadway, low dip angle drilling is particularly susceptible to complications such as borehole blockage and collapse. ABSTRACT Floor extraction roadway crossing layer drilling is a pivotal strategy for gas control in areas prone to coal and gas outbursts.
Xiao Liu   +9 more
wiley   +1 more source

Stability Evaluation and Parametric Optimization of Coal‐Concrete Composite Bearing Systems Under Mine‐Water‐Induced Deterioration: Experiments and FEINN Analysis

open access: yesEnergy Science &Engineering, EarlyView.
Mine‐water immersion tests reveal pronounced coal weakening (vs. minor concrete degradation), identifying coal pillars as the stability‐limiting component in composite dams. A coupled FEINN framework quantifies extreme‐pressure stability and ranks multi‐parameter designs via a normalized multi‐indicator scheme, enabling optimized dam configuration for ...
He Wen   +6 more
wiley   +1 more source

Structural Optimization of 3D Braided Tungsten–Copper Composites via Active Learning and Finite Element Simulation

open access: yesMaterials Genome Engineering Advances, EarlyView.
An uncertainty‐aware FEM–GPR active learning framework efficiently explores the design space of 3D braided W–Cu composites, identifying architectures with higher yield strength and preserved electrical conductivity, whereas SHAP interpretation highlights yarn spacing in the braid plane as the key structural factor controlling composite performance ...
Lai Zhang   +6 more
wiley   +1 more source

Combined creep and plastic analysis with numerical methods [PDF]

open access: yes, 2013
The combination of plastic and creep analysis formulation are developed in this paper. The boundary element method and the finite element method are applied in plates in order to do the numerical analysis.
Kryvko, A.   +2 more
core  

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