Results 91 to 100 of about 207,264 (315)

Curvature-dependent energies: The elastic case

open access: yesNonlinear Analysis: Theory, Methods & Applications, 2017
The authors continue the analysis begun in [the authors, ``Curvature dependent energies: a geometric and analytical approach'', Proc. R. Soc. Edinb., Sect. A, Math. (to appear), \url{doi:10.1017/S0308210516000202}]. In the present paper the authors study the curvature functional for non-smooth Cartesian curves in codimension higher than one.
Emilio Acerbi, Domenico Mucci
openaire   +3 more sources

Estimating the effective elastic modulus and specific fracture energy of snowpack layers from field experiments [PDF]

open access: yes
Measurements of the mechanical properties of snow are essential for improving our understanding and the prediction of snow failure and hence avalanche release. We performed fracture mechanical experiments in which a crack was initiated by a saw in a weak
VAN HERWIJNEN, ALEC   +5 more
core   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Reflection of micropolar elastic waves at the non-free surface of a micropolar elastic half-space

open access: yes, 2015
The reflection problem of the micropolar elastic waves at the non-free surface of a micropolar elastic half-space is studied in this paper. Different from the classic elastic solid, there are four kinds of elastic waves in the micropolar elastic solid ...
Zhang, Peng   +3 more
core   +1 more source

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

open access: yesAdvanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang   +2 more
wiley   +1 more source

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

open access: yesAdvanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du   +4 more
wiley   +1 more source

Mathematical modelling of processes occuring in power cylinders of hydraulic press while it's decompression

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2010
The main ways of decompression used in modern control systems and mathematical modelling of processes occuring in power cylinders under hydraulic press during its decompression are considered.
Elena S Korchak
doaj  

Energy-Entropy-Momentum integration of discrete thermo-visco-elastic dynamics.

open access: yes, 2011
A novel time integration scheme is presented for the numerical solution of the dynamics of discrete systems consisting of point masses and thermo-visco-elastic springs.
García Orden, Juan Carlos   +1 more
core  

Stress analysis of thin and thick plates on elastic foundations using boundary and finite element methods [PDF]

open access: yes, 1991
In this work an attempt has been made to derive a full finite element and boundary element theory for the analysis of thin and thick plates on elastic foundations. A new high order shear finite element capable of the analysis of thin thick plates has
Al-Hosani, Khaleel Ibrahim Abdulla
core  

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak   +3 more
wiley   +1 more source

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