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Fourier representation of geometrical imperfection for probabilistic buckling analysis
Jurnal Ilmiah SINERGIThis research studies the first part of the failure of a compression member structure due to buckling. This unstable equilibrium collapse, exposes brittle failure which occurs suddenly and therefore should be avoided wherever possible.
Pariatmono Sukamdo +5 more
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INFLUENCE OF GEOMETRICAL AND STRUCTURAL IMERFECTIONS OF STEEL PLATE GIRDERS
Facta Universitatis. Series: Architecture and Civil Engineering, 2021 The girders or parts of the girders are not ideally flat in terms of their geometry. The deviations that occur are defined as geometric imperfections.
Dragana Turnić +4 more
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Optimal Design of Trusses With Geometric Imperfections
13th AIAA/ISSMO Multidisciplinary Analysis Optimization Conference, 2010 The present paper focuses on optimization of trusses that have randomness in geometry that may arise from fabrication errors. The analysis herein is a generalization of a perturbation approach to topology optimization under geometric uncertainties. The main novelty in the present paper is in the consideration of potential buckling due to misaligned ...
Mehdi Jalalpour +2 more
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MATEC Web of Conferences, 2016 In this paper, both the bifurcation theory and the initial imperfection approach are used to predict localized necking in substrate-supported metal layers.
Akpama Holanyo K. +2 more
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Interactive Buckling of Q420 Welded Circular Tubes under Axial Compression
Advances in Materials Science and Engineering, 2020 Finite element models (FE models) of high-strength steel Q420 (yield strength 420 MPa) circular tubes considering residual stresses and local and overall geometric imperfections were established and verified against existing test data. Based on parameter
Bin Huang, Zhou Che Hong
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Revista IBRACON de Estruturas e Materiais, 2018 The bare steel structural members have a low fire resistance. However, in steel and concrete composite members, the concrete encasement, besides the contribution to the stiffness of the whole system, reduces the amount of heat that reaches the steel ...
Y. S. SIMÕES +2 more
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Advanced Engineering Materials, EarlyView.This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil +2 more
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Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading
Advanced Engineering Materials, EarlyView.This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev +2 more
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Buckling Knockdown Factors for Hemispherical Foam Core Sandwich Shells With Single Dimple
International Journal of Aerospace EngineeringIn this study, nonlinear postbuckling analyses are performed using ABAQUS to derive the buckling knockdown factors (KDFs) for hemispherical foam core sandwich shells under external pressure.
Chang-Hoon Sim +4 more
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Imperfection sensitivity analysis for a composite bowed-out shell under axial compression
Advances in Mechanical Engineering, 2019 In this article, we present a systematic work to investigate the imperfection sensitivity of composite bowed-out shells with different layup patterns under axial compression. Two types of geometric imperfections, including eigenmode-shaped imperfections (
Zhun Li, Guang Pan, Kechun Shen
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