Results 61 to 70 of about 4,483 (226)

Seeing double: shock waves and the de Sitter horizon

Journal of High Energy Physics
We consider a de Sitter observer in his rest frame at late times who observes a particle slightly displaced from unstable equilibrium. Initially, the observer notices an axisymmetric and parity-violating deformation along the trajectory of the displaced ...
Willy Fischler, Hare Krishna, Sarah Racz
doaj   +1 more source

Analytical stress solution framework for lined compressed air energy storage chambers and its application to safe burial depth determination and supporting effectiveness evaluation

Deep Underground Science and Engineering, EarlyView.
An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun, Cheng Zhao, Jinquan Xing, Qinyuan Luo   +3 more
wiley   +1 more source

Theoretical analysis on shear-bending deflection of a ring-shape piezoelectric plate

AIP Advances, 2016
In this paper, the electromechanical coupling field in shear-bending mode for a ring-shape piezoelectric plate was theoretically established. According to the classical small bending elastic plate theory and piezoelectric constitutive equations, the ...
Zejun Yu, Shuxiang Dong, Daining Fang
doaj   +1 more source

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source

Optimization of Baseplate Hub Design for Swaging Operation

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
Swaging process is studied through a 2-D axisymmetric finite element model with non-linear material models and allowing large deformation. The effects of major baseplate hub geometrical parameters are studied for the case of a single actuator arm with ...
K.C. EE, Peter HAHN, Brett HOLAWAY
doaj   +1 more source

Numerical simulation study on the characteristics and propagation attenuation of vibration signals in freezing pipe fracture

Deep Underground Science and Engineering, EarlyView.
This research study employs analysis system (ANSYS) fluid–structure interaction simulations to investigate the generation and attenuation of vibration signals resulting from freezing pipe fractures in artificial ground freezing projects. By evaluating key variables—including frozen soil elastic modulus, brine inlet pressure, and external pipe pressure ...
Yi Cao, Yansen Wang, En Chen, Meng Zhao
wiley   +1 more source

The effect of upsetting ratio on mechanical properties for hydromechanically bulged axisymmetric components made from copper tubes

Metalurgija, 2017
The paper presents experimental results of investigations of hydromechanical bulge forming of copper axisymmetric components whose relative wall thickness was s0/D = 0,045.
T. Miłek
doaj  

Kinematic Characteristics of Deformed Porous Structures

Журнал інженерних наук
Experimental and computational methods of studying the stress state in the plastic region are characterized by various methods and accuracy of measurements, methods of mathematical processing of experimental information, and interpretation of results ...
Veselovska N., Sivak R., Paladiychuk Y., Bandura V., Telyatnik I., Bohatiuk M., Savkiv V., Edl M.   +7 more
doaj   +1 more source

Mathematical modeling and computation of composite cylindrical shells under axisymmetric loading

MATEC Web of Conferences, 2017
The paper suggests an approach of mathematical modeling of composite cylindrical shells under axisymmetric load. The stress-strain state of each layer is characterized by a system of forces, moments, strains, and displacements adopted in the classical ...
Yakubovskiy Yuriy, Donkova Irina, Kuzyaev Aleksandr, Kruglov Mikhail   +3 more
doaj   +1 more source

Impact of axisymmetric deformation on MR elastography of a nonlinear tissue-mimicking material and implications in peri-tumour stiffness quantification. [PDF]

PLoS One, 2021
Fiorito M, Fovargue D, Capilnasiu A, Hadjicharalambous M, Nordsletten D, Sinkus R, Lee J.   +6 more
europepmc   +1 more source