Results 81 to 90 of about 1,744 (163)

Rozwiązanie Zagadnienia Dwuwymiarowego przy Stałej Krzywiźnie Linii Izostatycznych

open access: yesEngineering Transactions, 1960
Considering the two-dimensional problem of the classical theory of elasticity in natural coordinates, the author expresses the equilibrium conditions in the form of two independent equations in the stress components.
C. Woźniak
doaj  

Soliton lattice and single soliton solutions of the associated Lamé and Lamé potentials

open access: yes, 2004
We obtain the exact nontopological soliton lattice solutions of the Associated Lam\'e equation in different parameter regimes and compute the corresponding energy for each of these solutions.
Bena Coppex, Ioana Carla   +6 more
core   +1 more source

True-amplitude waveform inversion with the quasi-elastic wave equation

open access: yes, 2019
A quasi-elastic wave equation as a function of the pressure variable is presented which can accurately model PP reflections with elastic amplitude versus offset (AVO) effects under the first-order Born approximation. It uses a virtual source to model the
Feng, Zongcai   +3 more
core   +1 more source

Investigation into Thermoelastic Issues Arising from Temperature Shock in Spacecraft Solar Panels

open access: yesMathematics
This paper investigates the thermal shock response of a spacecraft solar panel. The panel is represented as a thin homogeneous plate. The governing equations are derived from the coupled thermoelasticity theory for a homogeneous medium, combining the ...
Andrey V. Sedelnikov   +1 more
doaj   +1 more source

Isomonodromic deformation of Lamé connections, Painlevé VI equation and Okamoto symetry

open access: yes, 2016
International audienceA Lam\'e connection is a logarithmic $\mathrm{sl}(2,\mathbb C)$-connection $(E,\nabla)$ over an elliptic curve $X:\{y^2=x(x-1)(x-t)\}$, $t\not=0,1$, having a single pole at infinity.
Loray, Frank
core   +1 more source

Confluence of singularities of differential equation: a Lie algebra contraction approach

open access: yes, 2009
International audienceWe investigate here the confluence of singularities of Mathieu differential equation by means of the Lie algebra contraction of the Lie algebra of the motion group $M(2)$ on the Heisenberg Lie algebra $H(3)$.
Zahaf, Mohammed Brahim   +1 more
core  

Analysis of Multiple Casing Annulus Pressure Buildup for HTHP Wells

open access: yesShiyou jixie, 2016
In the production process, the HPHT casing annulus temperature rises, heats the sealed annulus fluid, leading to increased casing load which could threatens the casing safety.To address the issue, on the basis of Lame thick-wall cylinder formula, the ...
Dou Yihua, Xue Shuai, Cao Yinping
doaj  

On some polynomials and continued fractions arising in the theory of integrable systems

open access: yes, 2007
This thesis consists of two parts. In the first part an elliptic generalisation of the Bernoulli polynomials is introduced and investigated. We first consider the Faulhaber polynomials which are simply related to the even Bernoulli polynomials and ...
Marie-Pierre J.E. Grosset (7158521)
core  

Design Method for Multi-layer Interference Fit

open access: yes工程科学与技术, 2013
:In order to improve the performances and work reliability of the multi-layer interference connection parts,based on traditional design methods,an improved design method was given.In accordance with the order from the inside to the outside,thick-wall ...
王建梅   +4 more
doaj  

The Lamé equation in parametric resonance after inflation

open access: yes, 2007
this paper we generalize the above results and derive the most general inflaton potential for which the corresponding matter modes equation reduces to the Lame form.
Equat Ion In   +3 more
core  

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