Structure of energy variation in nonlinear shell models

1988 ◽  
Vol 24 (10) ◽  
pp. 989-994 ◽  
Author(s):  
V. V. Kuznetsov
Keyword(s):  
Energy Variation ◽  
Shell Models ◽  
Nonlinear Shell

scholarly journals Statistical properties of nonlinear shell models of turbulence from linear advection models: rigorous results

Nonlinearity ◽  
2007 ◽  
Vol 20 (6) ◽  
pp. 1431-1441 ◽  
Author(s):  
Roberto Benzi ◽  
Boris Levant ◽  
Itamar Procaccia ◽  
Edriss S Titi
Keyword(s):  
Statistical Properties ◽  
Rigorous Results ◽  
Shell Models ◽  
Nonlinear Shell ◽  
Shell Models Of Turbulence

Dynamic analysis of bearingless tail rotor blades based on nonlinear shell models

1994 ◽  
Vol 31 (6) ◽  
pp. 1402-1410 ◽  
Author(s):  
Olivier A. Bauchau ◽  
Wuying Chiang
Keyword(s):  
Dynamic Analysis ◽  
Rotor Blades ◽  
Shell Models ◽  
Nonlinear Shell

Energy Approximation

2017 ◽  
Author(s):  
Philip Isett
Keyword(s):  
Main Lemma ◽  
The Other ◽  
Coarse Scale ◽  
Continuous Solutions ◽  
Material Derivative ◽  
Energy Variation ◽  
Energy Approximation ◽  
The Difference ◽  
Derivatives Of

This chapter presents the equations and calculations for energy approximation. It establishes the estimates (261) and (262) of the Main Lemma (10.1) for continuous solutions; these estimates state that we are able to accurately prescribe the energy that the correction adds to the solution, as well as bound the difference between the time derivatives of these two quantities. The chapter also introduces the proposition for prescribing energy, followed by the relevant computations. Each integral contributing to the other term can be estimated. Another proposition for estimating control over the rate of energy variation is given. Finally, the coarse scale material derivative is considered.

Influence of fasteners and connections flexibility on deflections of steel building including the stressed skin effect

2018 ◽  
Vol 2 (21) ◽  
pp. 131-148 ◽  
Author(s):  
Natalia Korcz ◽  
Elżbieta Urbańska-Galewska
Keyword(s):  
Finite Elements ◽  
Skin Effect ◽  
Numerical Models ◽  
Orthotropic Shell ◽  
3D Structure ◽  
Negligible Effect ◽  
Transverse Stiffness ◽  
Shell Models ◽  
Steel Building ◽  
Two Sides

The paper presents the analysis of the influence of fasteners and connections flexibility on displacements of symmetrical single-bay pitched-roof steel building, including trapezoidal cladding acting as a diaphragm. The purpose of the article was to compare numerical models with and without taking into consideration fasteners and connections flexibility in order to observe the differences in transverse stiffness of the building during modifying model from the simple one to more complex and precise. The analyses were carried out for the 3D structure. Fasteners and connections were substituted by equivalent beam finite elements. Corrugated sheets were replaced by three types of equivalent orthotropic shell models and the influence of the choice of the model on the stiffness of the building was observed. The results showed that in the analysed structure the flexibility of fasteners and connections has negligible effect on transverse displacements of the building in the case of four sides fastening of the sheeting, however in the case of two sides fastening the influence significantly increases.

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