Results 31 to 40 of about 228,956 (336)
Energies, 2019 Rock fracture in geo-materials is a complex phenomenon due to its intrinsic characteristics and the potential external loading conditions. As a result, these materials can experience intricate fracture patterns endowing various cracking phenomena such as:
José Reinoso +3 more
doaj +1 more source
Rotational elasticity and couplings to linear elasticity [PDF]
Mathematics and Mechanics of Solids, 2013 It is the aim of the paper to present a new point of view on rotational elasticity in a nonlinear setting using orthogonal matrices. The proposed model, in the linear approximation, can be compared to the well-known equilibrium equations of static linear elasticity.
Boehmer, CG, Tamanini, N
openaire +5 more sources
The Quarterly Journal of Mechanics and Applied Mathematics, 2011 We consider an infinite 3-dimensional elastic continuum whose material points experience no displacements, only rotations. This framework is a special case of the Cosserat theory of elasticity. Rotations of material points are described mathematically by attaching to each geometric point an orthonormal basis which gives a field of orthonormal bases ...
Vassiliev, Dmitri +2 more
openaire +3 more sources
Design of a high water-based fluid, high-pressure, and large-flow safety valve
The Journal of Engineering, 2018 Aiming at solving the problem of low unloading sensitivity, bad dynamic performance and poor stability of high-pressure and large-flow relief valve in hydraulic support system, a new differential type of high-pressure and large-flow relief valve ...
Geqiang Li +3 more
doaj +1 more source
Elastic Gradient Descent, an Iterative Optimization Method Approximating the Solution Paths of the Elastic Net [PDF]
Journal of Machine Learning Research 24 (2023) 1-53, 2022 The elastic net combines lasso and ridge regression to fuse the sparsity property of lasso with the grouping property of ridge regression. The connections between ridge regression and gradient descent and between lasso and forward stagewise regression have previously been shown.
arxiv
Phys. Rev. Lett. 121, 064301 (2018), 2018 In this work, we introduce an elastic analog of the Purcell effect and show theoretically that spherical nanoparticles can serve as tunable and robust antennas for modifying the emission from localized elastic sources. This effect can be qualitatively described by introducing elastic counterparts of the familiar electromagnetic parameters: local ...
arxiv +1 more source
Healthcare Technology Letters, 2019 A soft and highly directive, proximity-coupled split-ring resonator fabricated with a liquid alloy, copper and polydimethylsiloxane (PDMS) is presented. The same was designed for sensing osteogenesis of calvarial bone.
Mauricio David Perez +10 more
doaj +1 more source
Viscoelastic Properties of ECM-Rich Embryonic Microenvironments
Frontiers in Cell and Developmental Biology, 2020 The material properties of tissues and their mechanical state is an important factor in development, disease, regenerative medicine and tissue engineering.
Zsuzsa Akos +7 more
doaj +1 more source
On damage tensor in linear anisotropic elasticity [PDF]
Theoretical and Applied Mechanics, 2017 In this paper, the anisotropic linear damage mechanics is presented starting from the principle of strain equivalence. The authors have previously derived damage tensor components in terms of elastic parameters of undamaged (virgin) material in closed ...
Jarić Jovo, Kuzmanović Dragoslav
doaj +1 more source
The strain gradient elasticity via nonlocal considerations [PDF]
arXiv, 2022 Strain gradient elasticity and nonlocal elasticity are two enhanced elastic theories intensively used over the last fifty years to explain static and dynamic phenomena that classical elasticity fails to do. The nonlocal elastic theory has a clear differentiation from the classical case by considering stresses in a point of the continuum as an integral ...
arxiv