A review of recent advancements in finite element formulation for sandwich plates

Irfan, Shehzaib; Siddiqui, Faisal

doi:10.1016/j.cja.2018.11.011

Cited by 28 publications

(9 citation statements)

References 85 publications

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“…Today, the literature on modeling of shells would require an entire article for a reasonably complete coverage. We shall not attempt to sort through this literature here; rather we shall refer to older 4,5 and recent 6,7 reviews.…”

Section: Introductionmentioning

confidence: 99%

Robust flat‐facet triangular shell finite element

Krysl

2022

Numerical Meth Engineering

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A flat facet finite element with three nodes and six degrees of freedom per node for linear static and dynamic analysis of thick and thin shells is presented. The membrane response is modeled with constant strain triangles. The bending response treats the transverse shear with an improved version of the discrete-shear-gap technique. The main novelty of the present approach is the robust treatment of the drilling rotations: the element internally responds to five degrees of freedom per node, but externally it naturally possesses six degrees of freedom per node. The drilling degree of freedom is decoupled from the bending and twisting, and the undesirable user-selectable arbitrary stabilization is avoided. The element is shown to be robust for extremely thin shells, and passes tests such as the Raasch hook problem. Performance is illustrated with static and dynamic examples including branched and folded shells.

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Section: Introductionmentioning

confidence: 99%

Robust flat‐facet triangular shell finite element

Krysl

2022

Numerical Meth Engineering

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“…Formulations of shell finite element models are quite complex compared to other structural elements, and, not surprisingly, over the past several decades, many hundreds of papers have appeared on the subject of shell finite element analysis. We refer to older 1,2 and recent 3,4 reviews.…”

Section: Introductionmentioning

confidence: 99%

Explicit dynamics of shells with a flat‐facet triangular finite element

Krysl

2022

Numerical Meth Engineering

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The use of a flat‐facet finite element with three nodes and six degrees of freedom per node for modeling of linear wave‐propagation events is discussed. The triangular shell finite element was presented in a preceding publication. The main novelty of the current approach is the treatment of the drilling rotations that decouples the drilling degree of freedoms on the global level, and hence makes it possible to eliminate negative effects of these degrees of freedom on the explicit time‐stepping algorithms employed to compute the dynamic response, such as deterioration in accuracy or artificially reduced time step. The element is shown to be robust for wave propagation simulations, and its performance is illustrated with examples including guided‐wave scenarios.

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“…Syam et al [5] studied the static properties of a machine frame and carried out experimental verification. Irfan et al [6] reviewed finite element model development and the recent research trends of finite element formulations developed for analyzing sandwich plates. Gohari et al [7] applied finite element analysis to investigate crack initiation and unstable crack growth of the part resulting from gas pressure and the accompanying gas temperature in the gas forming process.…”

Section: Introductionmentioning

confidence: 99%

Static and Dynamic Analysis of a 6300 KN Cold Orbital Forging Machine

Chen

Wang

et al. 2020

Processes

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In cold orbital forging (COF) processes, large stress, displacement and vertical vibration of the COF machine are bad for the quality of the part and the fatigue life of the COF machine. It is necessary to investigate the static and dynamic performance of the COF machine and provide methods for reducing the stress, displacement and vertical vibration of the COF machine. In this paper, finite element analysis, theoretical analysis, numerical simulation and experimental analysis were applied to study the static and dynamic performance of a 6300 KN COF machine. The static and dynamic analyses were verified effectively by carrying out strain and vertical vibration test experiments. In the static analysis, the large stress and displacement positions of the COF machine were mainly distributed near the working table and the junction between the working table and the column. Large stress and displacement will be bad for the quality of the part and the fatigue life of the COF machine. Structural optimizations of the COF machine include ribbed plates on the working table and beam. This structural optimization method of the COF machine obviously reduced the stress and displacement of the COF machine. When the angular velocities of the eccentric rings were 8π rad/s, the vertical vibration of the swing shaft is a low-frequency vibration. The existence of absorber obviously reduced the vertical vibration of the COF machine.

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A review of recent advancements in finite element formulation for sandwich plates

Cited by 28 publications

References 85 publications

Robust flat‐facet triangular shell finite element

Robust flat‐facet triangular shell finite element

Explicit dynamics of shells with a flat‐facet triangular finite element

Static and Dynamic Analysis of a 6300 KN Cold Orbital Forging Machine

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