Structural engineering: Seeing the big picture

Chen, W. F.

doi:10.1007/s12205-008-8025-7

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…8) given by CEPAO. good agreement between our results and other benchmark results from the literature is obtained. This work may be considered as a contribution in the structural system approach to design of steel frames (see [22]). …”

Section: Discussionmentioning

confidence: 99%

Second-order plastic-hinge analysis of 3-D steel frames including strain hardening effects

Long

Hung

2008

Engineering Structures

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Section: Discussionmentioning

confidence: 99%

Second-order plastic-hinge analysis of 3-D steel frames including strain hardening effects

Long

Hung

2008

Engineering Structures

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“…In this work, we use the GDCM to solve a complex non-linear problem. For further discussion on non-linear systems, the reader is referred to Leon et al, 2011;Yang et al, 1994;Gu, 2004;Chen, 2008 andBathe, 1996. To verify the accuracy of propose method, two examples were analysed: one explicit function and one statically undertermined 6-bar truss.…”

Section: Implicit Limit State Function and Sources Of Non-linearitymentioning

confidence: 99%

Multi-Scale System Reliability Analysis

Esposito

Gomes

2015

Procedings of the XXXVI Iberian Latin American Congress on Computational Methods in Engineering

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Abstract. The development of methods that allow to numerically reproduce the actual behavior of real structural systems has challenged scientists and researchers and urged them to address issues that extend beyond the integrity of a system. Therefore, a series of new parameters must be taken into account to evaluate the failure of a real structural system, especially in redundant systems. In the present paper, an accurate technique is developed to satisfy the probabilistic analysis. The proposed method estimates the reliability of the system with techniques that enable detecting multiple failure modes and, using the chi-squared distribution, a one direction exact integration is performed to calculate the failure probability of each mode in a more precise way than conventional approximation and simulation methods. This technique is based on the conventional (HDM) Hyperspace Division Method procedures which approximate the limit state surface by a series of spherical segments for provide accurate estimates of failure probabilities of components or systems. Besides, in this work, nonlinearity is considered by adopting an elastic plasticity model with linear hardening. Numerical applications showed the accuracy and efficiency of the methodology in the evaluation of the failure probability of problems represented by high nonlinear limit state functions with multiple failure regions.

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“…In terms of finite element analysis, this requirement imposes the need for a load boundary search algorithm at each time step. For practical purposes, the distributed load was discretized as a number of uniformly distributed concentrated loads (Chen, 2008). If there are a number of concentrated loads on an element, then equivalent nodal forces are computed and assembled to the loaded nodes.…”

Section: Finite Element Analysis Of Guidewaysmentioning

confidence: 99%

Experimental and numerical investigation on dynamic amplification factors of an urban maglev guideway

Chung

Jang

Inho

2011

KSCE Journal of Civil Engineering

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The Korean urban maglev project was initiated with the intention of building a commercial line by 2012. An optimized guideway has been proposed and relevant tests are currently being conducted. However, the Dynamic Amplification Factor (DAF) for the maglev guideway has yet to be determined. As the maglev load is distributed rather than concentrated, further examination of dynamic behavior is required. The objective of this study was to identify the DAF of the proposed urban maglev guideway via moving-load analyses. For this purpose, a full-scale guideway girder test and a field test were conducted to identify the modal properties. A finite element model was then developed and verified against test results. Finally, moving load analyses were performed up to the maximum speed. Guideway deflection, longitudinal stresses, and support reactions were measured for various vehicle speeds−DAFs were thus computed. It was found that DAFs for maglev guideways are less than 2.5% at the maximum design speed. This implies that dynamic amplification need not be a severe consideration for the proposed maglev system.

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Structural engineering: Seeing the big picture

Cited by 10 publications

References 4 publications

Second-order plastic-hinge analysis of 3-D steel frames including strain hardening effects

Second-order plastic-hinge analysis of 3-D steel frames including strain hardening effects

Multi-Scale System Reliability Analysis

Experimental and numerical investigation on dynamic amplification factors of an urban maglev guideway

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