Results 71 to 80 of about 166,550 (244)
Advances in Materials Science and Engineering, Volume 2025, Issue 1, 2025.Reinforced concrete columns (RCCs) are critical load‐bearing elements in structural systems, where stability is often governed by buckling, particularly in slender members subjected to axial compression. While extensive studies exist on column buckling, there remains a need for integrated approaches that couple analytical formulations with advanced ...
Rajib Karmaker +3 more
wiley +1 more source
Solution to the Equations of the Moment Expansions [PDF]
, 2011 We develop a formula for matching a Taylor series about the origin and an asymptotic exponential expansion for large values of the coordinate. We test it on the expansion of the generating functions for the moments and connected moments of the ...
C. Stubbins +10 more
core +4 more sources
International Journal of Energy Research, Volume 2025, Issue 1, 2025.Coal mining will lead to rock strata bending deformation and the redistribution of stress field. The change of principal stress magnitude and direction will influence the failure zone distribution of the coal pillar, which determines the stability and safety of roadway near goaf. In this paper, a theoretical model is established to analyze the rotation
Yunjiang Sun +5 more
wiley +1 more source
Analytical method comparison on critical force of the stepped column model of telescopic crane
Advances in Mechanical Engineering, 2018 The calculation of the critical force of the stepped column model of telescopic boom crane is the key to stability calculation of all-terrain crane. In slightly bending theory, differential equation can be built up, and then the deflection curve of ideal
Fenglin Yao +4 more
doaj +1 more source
Reviews on Advanced Materials Science, 2022 In this paper, the unified Jacobi–Ritz method (JRM) is utilized to analyze the dynamic response of rectangular plates with general boundary conditions.
Jia Di +5 more
doaj +1 more source
Fluctuations in the Irreversible Decay of Turbulent Energy
, 1998 A fluctuation law of the energy in freely-decaying, homogeneous and isotropic turbulence is derived within standard closure hypotheses for 3D incompressible flow.
A. Juneja +23 more
core +1 more source
On‐Orbit Global Mode Calculation and Characteristic Analysis of Four‐Wing Flexible Satellite
International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.For a flexible satellite with four solar arrays symmetrically arranged on both sides (referred to as the four‐wing flexible satellite), a solar array dynamic equation is established by incorporating the stiffness matrix of the solar array drive assembly (SADA).
Guowei Jiang +5 more
wiley +1 more source
Boundary conditions for augmented plane wave methods
, 2005 The augmented plane wave method uses the Rayleigh-Ritz principle for basis functions that are continuous but with discontinuous derivatives and the kinetic energy is written as a pair of gradients rather than as a Laplacian.
Brouder, Christian
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Vibration Analysis of a Pipeline System Based on Model Truncation
Shock and Vibration, Volume 2025, Issue 1, 2025.Designing a complex pipeline for a floating production storage and offloading (FPSO), particularly over long distances, presents significant challenges in vibration analysis. Traditional modeling methods, which often assume finite lengths and simple configurations, fall short as they do not account for the integrality and locality of long spans and the
Huawei Han +5 more
wiley +1 more source
On the Rayleigh-Ritz variational method
, 2022 We give a simple proof of the well known fact that the approximate eigenvalues provided by the Rayleigh-Ritz variational method are increasingly accurate upper bounds to the exact ones. To this end, we resort to the variational principle, mentioned in most textbooks on quantum chemistry, and to a well known set of projection operators.
openaire +2 more sources