Results 71 to 80 of about 12,444 (221)

Influence of Slenderness Ratio on Buckling Behavior of Reinforced Concrete Columns: A Finite Element Analysis

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, Mohammad Redwneul Hoque, Ujjwal Kumar Deb, Andrea Grilli   +3 more
wiley   +1 more source

Investigation on Principal Stress Rotation and Instability Mechanism of Coal Pillar Induced by Key Strata Bending Deformation Near Goaf

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, Daohan Li, Yuhao Feng, Jianan Wang, Shuai Guo, Luyu Wang   +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, Wenjun Meng, Jie Zhao, Zhanjiao She, Guoshan Shi   +4 more
doaj   +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, Xiaofan Xu, Rui Zhang, Qi Shi, Yuxin Fang, Zhiguang Song   +5 more
wiley   +1 more source

Variational calculations for resonance oscillations of inhomogeneous plasmas [PDF]

The electrostatic resonance properties of an inhomogeneous plasma column are reported by application of the Rayleigh-Ritz method. A description of the rf equation of motion and pressure term that expresses the system of equations in Euler-Lagrange form ...
Crawford, F. W., Peng, Y. K. M.
core   +1 more source

Accurate approximations to eigenpairs using the harmonic Rayleigh Ritz Method [PDF]

, 2001
The problem in this paper is to construct accurate approximations from a subspace to eigenpairs for symmetric matrices using the harmonic Rayleigh-Ritz method.
Eshof, J. van den, Sleijpen, G.L.G.
core  

Self-consistently Improved Finite Temperature Effective Potential for Gauge Theories

, 1993
The finite temperature effective potential of the Abelian Higgs Model is studied using the self-consistent composite operator method, which sums up the contributions of daisy and superdaisy diagrams. The effect of the momentum dependence of the effective
C. Athorne, C. G. Boyd, D. J. Gross, D. Kirzhnits, D. Kirzhnits, D. Kirzhnits, F. Freire, G. Amelino-Camelia, G. Amelino-Camelia, G. Amelino-Camelia, H.A. Bethe, J. Kapusta, J. Kapusta, J. M. Cornwall, J. March-Russell, J. R. Espinosa, J. R. Espinosa, L. Dolan, M. Dine, M. Dine, M. Dine, M. E. Carrington, M. E. Shaposhnikov, M. E. Shaposhnikov, P. Arnold, P. Arnold, P. Elmfors, R. R. Parwani, R. Takahashi, S. Weinberg, V. Jain, W. Buchmueller   +31 more
core   +1 more source

An Analysis of the Rayleigh–Ritz and Refined Rayleigh–Ritz Methods for Regular Nonlinear Eigenvalue Problems

SIAM Journal on Matrix Analysis and Applications
25 pages, 1 figure, SIAM Journal on Matrix Analysis and Applications, accepted, December 18 ...
Zhongxiao Jia, Qingqing Zheng
openaire   +3 more sources

Elliptic Spline Functions and the Rayleigh-Ritz-Galerkin Method [PDF]

Mathematics of Computation, 1970
Error estimates for the Rayleigh-Ritz-Galerkin method, using finite-dimensional spline type spaces, for a class of nonlinear two-point boundary value problems are discussed. The results of this paper extend and improve recent corresponding results of B. L. Hulme, F. M. Perrin, H. S. Price, and R. S. Varga.
openaire   +2 more sources

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, Qiang Fu, Changhui Wang, Yuhai Sun, Changfei Li, Cong Gao   +5 more
wiley   +1 more source