Stress and Deformation Response of Viscoelastic Solids in the Gravitational Field

Author(s):  
WX Zhang ◽  
LM Yang
2020 ◽  
Vol 15 (2) ◽  
Author(s):  
Filip Klejch ◽  
Eva Schmidová ◽  
Jakub Vágner ◽  
Ivana Zetková

This paper deals with the problematics of tensile testing of maraging steel lightweight cylindrical samples with internal structures, intended for automotive application. The samples were made with DMLS technology and tensile tested under the static strain rate of 0.002 s-1. During the loading, uneven deformations and multiple necking occurred on the samples. The mentioned effect significantly affects the state of stress and deformation at the final fracture zone, as well as the total deformation into the fracture, which means that it actually distorts the standard tensile test record. Therefore, a methodology for capturing the deformation response using the ARAMIS optical system was proposed. The methodology is presented and verified by a set of experiments for BCC internal structure.


2013 ◽  
Vol 401-403 ◽  
pp. 416-421
Author(s):  
Bo Huang ◽  
Xun Bo Li ◽  
Zhi Zeng ◽  
Xiang Li ◽  
Wen Hua Fang

Random vibration is one of the main factors influencing the reliability of electrical connectors. In this paper, a Micro-USB electrical connector was chosen to be an object for this research. The finite element method was applied in random vibration analysis. At first, a three-dimensional model of the electrical connector was established by using Pro/E and ANSYS Workbench software. Then, the modal characteristics analysis was carried out and its modal parameters can be obtained from this analysis and the reliability of the electrical connector under the natural frequency can be also verified. Finally, according to results of the simulation, the equivalent stress and deformation response under 1 sigma levels hadn't changed much. The conclusions can provide a reference for the reliability analysis of electronic components.


2020 ◽  
Vol 177 ◽  
pp. 02001
Author(s):  
Vladimir Philatov ◽  
Lubov Boltnova ◽  
Ksenya Vandysheva

Gravity is important in the history of Earth 's formation and evolution. Gravitational accretion, gravitational differentiation of Earth matter by density. Gravitational accretion, gravity differentiation of the Earth 's substance in density, its movement and other processes deform the Earth 's crust, contribute to the formation in it of different scale, shape and metallogenical specialization of plicative and disjunctive structures, with which genetically and spatially related deposits of different minerals. The link between gravity and deformation of the geological medium is its density inhomogeneities. Their role is twofold: they are either formed by gravity stresses or are themselves sources of stress and strain. The method of studying the deformation of the geological medium by gravity is called tectonophysical analysis of the gravitational field. Its physical basis is two fundamental laws: the law of world gravity and the law on proportional dependence between stress and deformation. This method solves two problems.


1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.


1984 ◽  
Vol 75 ◽  
pp. 361-362
Author(s):  
André Brahic

AbstractThe dynamical evolution of planetary discs in the gravitational field of an oblate planet and a satellite is numerically simulated.


2000 ◽  
Vol 10 (PR5) ◽  
pp. Pr5-109-Pr5-112
Author(s):  
J.-F. Dufrêche ◽  
J.-P. Simonin ◽  
P. Turq

1971 ◽  
Vol 105 (12) ◽  
pp. 780-781 ◽  
Author(s):  
Ya.B. Zel'dovich ◽  
Lev P. Pitaevskii ◽  
Valentin S. Popov ◽  
Aleksei A. Starobinskii

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