Optimum design based on reliability for a composite structural system

Liu, Yang; Ma, Zejun

doi:10.1016/0045-7949(90)90148-u

Cited by 12 publications

(9 citation statements)

References 5 publications

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“…A detailed discussion of reliability-based optimization (RBO) is provided by Frangopol [1997], and will not be duplicated here. Yang and Ma [1990] present a procedure for the RBO of composite structures.…”

Section: Reliability-based Optimization Of Composite Structuresmentioning

confidence: 99%

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Reliability-Based Optimization of Fiber-Reinforced Polymer Composite Bridge Deck Panels

2006

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A reliability-based optimization (RBO) methodology was developed and applied to fiber-reinforced polymer (FRP) bridge decks. Commercially available software was used to optimize a FRP bridge deck panel by weight with structural reliability, stress, and deflection constraints. A methodology using optimization software, finite element analysis, and probabilistic analysis software was developed to examine the effects of load and resistance uncertainties in FRP bridge deck optimization. Eight modular deck designs were considered for use in the RBO methodology. Investigations into random variable sensitivities, design variable sensitivities, wheel positions, and buckling were conducted to minimize computational effort. Five models were eventually optimized with deterministic methods and the RBO methodology. Ply thicknesses were treated as

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Section: Reliability-based Optimization Of Composite Structuresmentioning

confidence: 99%

“…The example problem is run with a target minimum reliability of 0.999999. The authors concluded that for large-scale composite structures, the two-level RBO technology presented is appropriate for its high efficiency [Yang and Ma, 1990].…”

Section: Reliability-based Optimization Of Composite Structuresmentioning

confidence: 99%

Reliability-Based Optimization of Fiber-Reinforced Polymer Composite Bridge Deck Panels

2006

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“…Up to now, numerous studies have been performed to quantify uncertainty in mechanical properties of composite laminates [1][2]. They focused on the probabilistic strength predictions [3][4][5], reliability analysis method modifications and comparisons [6][7][8][9][10][11], reliability based safety factors [12][13][14][15], reliability based design optimizations (RBDOs) [16][17][18][19][20][21] and new proposed techniques for improving computational efficiency [22][23][24][25][26][27]. Considering the specificity of hole laminates, a few researchers have endeavored to investigate the probabilistic strength of composite pin-loaded laminates with normal distribution assumptions on several design parameters, by combining a progressive damage method with statistical analysis techniques.…”

Section: Introductionmentioning

confidence: 99%

A probabilistic model for strength analysis of composite double-lap single-bolt joints

Zhao

Shan

Liu

et al. 2017

Composite Structures

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A probabilistic model involving the randomness of basic design parameters was presented to predict the probabilistic strength of a typical composite double-lap single-bolt joint. In the probabilistic model, statistical models of the random parameters including geometrical dimensions, fiber orientation angles and material properties were constructed. In addition, a parametric failure prediction model employing a modified characteristic curve method was established. Static tensile tests of fifteen composite double-lap single-bolt joints made of T800 carbon/epoxy composites were carried out. The probabilistic failure load of the joint obtained from the proposed model is in good consistency with that from the experiments, which verifies the effectiveness and accuracy of the proposed model. Meanwhile, it shows that the proposed model is not sensitive to the probability distribution type of random variables, although the probability distribution type of random variables slightly influences the statistical parameters of the probabilistic failure load. Furthermore, a relationship between the failure probability and the tensile load is determined, and longitudinal compressive strength X C , ply thickness t ply and longitudinal elastic modulus E 11 of T800 unidirectional lamina are the key factors affecting the probabilistic failure load and reliability of the joint remarkably.

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“…For a mathematical analysis, is necessary to describe the failure domain In reliability literature, due to the complexity of the failure concept, a 3.2 Reliability formulation. Ply level step by step approximation to the subject is observed, from uniaxial tension reliability [39,56] to a more general multiaxial case in recent years.…”

Section: Reliability Formulation Ply Levelmentioning

confidence: 99%

“…The first efforts to apply RBDO in laminate design, derived results that clearly remark the difference between deterministic and probabilistic designs [56,108].…”

Section: Reliability Based Designmentioning

confidence: 99%

Fatigue prognosis in composites: a bayesian framework

Chiachío¹

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Optimum design based on reliability for a composite structural system

Cited by 12 publications

References 5 publications

Reliability-Based Optimization of Fiber-Reinforced Polymer Composite Bridge Deck Panels

Reliability-Based Optimization of Fiber-Reinforced Polymer Composite Bridge Deck Panels

A probabilistic model for strength analysis of composite double-lap single-bolt joints

Fatigue prognosis in composites: a bayesian framework

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