Efficiency and accuracy considerations in a unified plate theory with delamination

Williams, Todd O.

doi:10.1016/s0263-8223(00)00196-3

Cited by 24 publications

(17 citation statements)

References 8 publications

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“…The theory accounts for the initiation and evolution of delaminations between lamina through the use of cohesive zone models (CZMs) [2]. This plate theory has been shown to accurately predict the local elastic fields within a plate as well as the global plate buckling loads in the presence of both perfect bonding between lamina as well as in the presence of delaminations [3]. While the basic plate theory is capable of utilizing any CZM, the MSFE model utilizes either a simple bilinear model or a more advanced CZM that incorporates Coulombic frictional effects.…”

Section: Slip Tablementioning

confidence: 99%

A Coupled Approach to Developing Damage Prognosis Solutions

Sohn

Farrar

Hemez³

et al. 2003

KEM

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Abstract. An approach to developing damage prognosis (DP) solution that is being developed at Los Alamos National Laboratory (LANL) is summarized in this paper. This approach integrates aadvanced sensing technology, data interrogation procedures for state awareness, novel model validation and uncertainty quantification techniques, and reliability-based decision-making algorithms in an effort to transition the concept of damage prognosis to actual practice. In parallel with this development, experimental efforts are underway to deliver a proof-of-principle technology demonstration. This demonstration will assess impact damage and predict the subsequent fatigue damage accumulation in a composite plate. Although the project focus will be DP for composite materials, most of this technology can generalize to many other applications. The unique aspects of this approach discussed herein include: 1) multi-length scale damage models analyzed on tera-scale computer platforms that discretize composites on an individual lamina level, 2) integration of advanced sensors with Los Alamos's flight-hardened data acquisition system, 3) damage detection based on a statistical pattern recognition approach, and 4) reliability-based metamodels with quantified uncertainty that can be deployed on microprocessors integrated with the sensing system for autonomous damage prognosis.

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Section: Slip Tablementioning

confidence: 99%

A Coupled Approach to Developing Damage Prognosis Solutions

Sohn

Farrar

Hemez³

et al. 2003

KEM

Self Cite

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“…In closing this introductory overview of the zigzag approaches for the analysis of laminated composite laminates and sandwich structures, it should be noted that they belong to the more general modern approaches, known either as Multi-scale or Global-local approaches [86,87,88,89,90,91,92], where the displacement field within each layeris represented as a superposition of a layer-wise field, defined over each layer, and a global field spanning the entire laminate. Thus, the governing equations exhibit explicit coupling between effects associated with different (global and local) length scales.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the governing equations exhibit explicit coupling between effects associated with different (global and local) length scales. This multi-scale representation allows the accuracy of layer-wise theories to be achieved at a reduced computational cost [88]. It also facilitates the use of highly refined kinematic descriptions in regions of critical interest with reduced-order descriptions elsewhere in the structure, and affords a straightforward means of transitioning between such descriptions.…”

Section: Introductionmentioning

confidence: 99%

First-Order Displacement-Based Zigzag Theories for Composite Laminates and Sandwich Structures: A Review

Sciuva¹

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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“…Recently, many researchers have devoted themselves to laminated plates and shells featuring interlaminar bonding imperfections [1][2][3][4][5][6][7][8][9][10]. It has been shown that the interfacial imperfections have an important effect on the statics, dynamics and stability of these structures.…”

Section: Introductionmentioning

confidence: 99%