نتایج جستجو برای: analytical buckling
تعداد نتایج: 177062 فیلتر نتایج به سال:
Scissoring in thick bars suppresses buckling behavior in serpentine traces that have thicknesses greater than their widths, as detailed in a systematic set of analytical and experimental studies. Scissoring in thick copper traces enables elastic stretchability as large as ≈350%, corresponding to a sixfold improvement over previously reported values for thin geometries (≈60%).
It is empirically established that, due to a number of factors involved, a classical (linear) analysis of buckling pressure is impossible. Nonlinear theories of buckling are, therefore, required that involve effective factors such as imperfections and welding effects. In this study, models are developed which are as close to allowable standard deviations as possible. In the next stage, their bu...
Buckling transitions in superhelical DNA are sudden changes in shape that accompany a smooth variation in a key parameter, such as superhelical density. Here we explore the dependence of these transitions on the elastic constants for bending and twisting. A and C, important characteristics of DNA's bending and twisting persistence lengths. The large range we explore extends to other elastic mat...
Z. S. LIU∗,¶, S. SWADDIWUDHIPONG†, F. S. CUI∗, W. HONG‡, Z. SUO§ and Y. W. ZHANG∗ ∗Institute of High Performance Computing 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632 †Department of Civil and Environmental Engineering National University of Singapore E1A-07-03, 1 Engineering Drive 2, Singapore 117576 ‡Department of Aerospace Engineering Iowa State University, Ames, IA 50014, USA §Scho...
In this article, an exact analytical solution for thermal buckling analysis of thin functionallygraded (FG) rectangular plates is presented. Based on the classical plate theory and using the principle ofminimum total potential energy, the stability equations are obtained. Since the material properties in FGmaterials are functions of the coordinates (specially the thickness), the stability equat...
Buckling-driven delamination is considered among the most critical failure modes in composite laminates. This paper examines the propagation of delaminations in a beam under pure bending. A pre-developed analytical model to predict the critical buckling moment of a thin sub-laminate is extended to account for propagation prediction, using mixed-mode fracture analysis. Fractography analysis is p...
Analytical relations between the critical buckling load of a functionally graded material (FGM) Timoshenko beam and that of the corresponding homogeneous Euler–Bernoulli beam subjected to axial compressive load have been derived for clamped–clamped (C–C), simply supported–simply supported (S–S) and clamped–free (C–F) edges. However, no such relation is found for clamped–simply supported (C–S) b...
In some simple two-dimensional structures it is sufficient to determine only the lowest value of the load at which buckling commences. However, in the case of shells, it may be also necessary to investigate the postbuckling behavior because it has an important bearing on the magnitude of the failure load. The importance of the postbuckling behavior, which the small deflection theory of buckling...
0026-2714/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.microrel.2012.03.015 ⇑ Corresponding author. Tel.: +31 (0) 15 27 82311. E-mail address: [email protected] (R.H. Poelm In this paper, the buckling behavior of fixed–fixed, both singleand multiwall carbon nanotubes (CNTs) under axial compressive loads, are studied using analytical continuum theory and molecular dyna...
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