Shaft design: A semi-analytical finite element approach

Munteanu, Mircea; Bona, Francesco De; Bressan, F

doi:10.1080/15397734.2017.1322976

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…The axial and bending loading conditions may be modelled exactly with the Fourier series, with a substantial reduction of the computing time with respect to a 3D model. 41,42 Symmetry conditions have been applied, where applicable. The SCF depends on r/d and D/d, and on Poisson’s ratio ν.…”

Section: Groove Geometry and Numerical Assessmentmentioning

confidence: 99%

Shafts with U-shaped circumferential grooves: design charts for stress concentration factors, radial displacement and Poisson’s ratio influence

Mantovani

Chiari

Giacalone

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Shafts with U-shaped circumferential grooves subjected to internal normal force and bending moment are investigated on the basis of finite element analysis. The classical problem of the stress concentration factors (SCFs) identification is addressed. SCF charts are provided, adopting the maximum equivalent von Mises stress in the SCF definition. The discrepancy between the uniaxial SCFs extracted from the standard reference books and the multiaxial SCF obtained by finite element increases from 5% up to 20%. The intersections between the SCF curves are studied, which reveal a non-monotonic profile of the SCFs with respect to the outer and inner diameter ratio of the notched shaft. The radial displacement at the notch root is examined and design charts of ample validity and prompt access are compiled. It is found that the radial displacement sign and magnitude are largely dependent on the geometry of the notch. Furthermore, the strain and stress state of extremely shallow grooves are analysed, and a critical discussion on their SCFs using the von Mises criterion is presented. The influence of Poisson’s ratio is considered. A simplified method for the evaluation of a multiaxial SCF is proposed to account for the Poisson’s ratio effect. Thanks to the employment of few dedicated diagrams, and the present method allows an accurate evaluation of the SCF for U-grooved shafts, when Poisson’s ratio differs from the common 0.3 value.

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Section: Groove Geometry and Numerical Assessmentmentioning

confidence: 99%

Shafts with U-shaped circumferential grooves: design charts for stress concentration factors, radial displacement and Poisson’s ratio influence

Mantovani

Chiari

Giacalone

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…Moreover, FEA consider geometric details and non-linear behaviour of PMs, requiring expensive software/hardware, large computational time, and large drive memory due to repeated iteration [22]. To decrease dependency on FEA, cope with computational complexity, computational time [23], computer memory and drive storage, alternate modelling approaches are developed for design of LFSM. Despite of reduction in computational time, analytical methods have high accuracy with discrepancy less than 5.0% [24].…”

Section: Introductionmentioning

confidence: 99%

Analytical Airgap Field Model and Experimental Validation of Double Sided Hybrid Excited Linear Flux Switching Machine

et al. 2021

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Linear Flux Switching Machines (LFSMs) are suitable candidates for long stroke applications as they confines all excitation sources to primary thus leaving completely passive, robust, and low cost secondary. Permanent Magnet LFSMs (PMLFSMs) enables high thrust force density and efficiency. However, deficiency of controllable air-gap flux, risk of PM demagnetization, and increasing cost of rare earth PM materials diverted researchers towards Field Excited LFSMs (FELFSMs). FELFSMs wiped out aforementioned PMLFSM's shortcomings at the cost of low thrust force density. In this paper, merits of PMLFSM and FELFSM are combined by proposing a novel Hybrid Excited LFSM (HELFSM). Proposed machine is excited by PMs, Field Excitation Coils (FECs), and Armature Windings (AWs). However, complex magnetic circuit of poly-excited HELFSM compels designers to adopt FE Analysis (FEA) for design, analysis, and optimization. To decrease dependency on computationally complex and time consuming FEA, an analytical model combining lumped parameter magnetic equivalent circuit, Fourier analysis, Laplace equation, and Maxwell Stress Tensor method is proposed to predict open-circuit flux linkage, B-EMF, normal and tangential components of no-load and on-load magnetic flux density, detent, and thrust force performance. Finally, predictions of the developed analytical model are validated with corresponding FEA and experimental results.INDEX TERMS Analytical modeling, finite element analysis, hybrid excited linear flux switching machine, lumped parameter magnetic equivalent circuits, maxwell stress tensor, segmented secondary.

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Finite element and experimental method for analyzing the effects of martensite morphologies on the formability of DP steels

Alipour

Torabi

Sareban

et al. 2019

Mechanics Based Design of Structures and Machines

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Shaft design: A semi-analytical finite element approach

Cited by 5 publications

References 18 publications

Shafts with U-shaped circumferential grooves: design charts for stress concentration factors, radial displacement and Poisson’s ratio influence

Shafts with U-shaped circumferential grooves: design charts for stress concentration factors, radial displacement and Poisson’s ratio influence

Analytical Airgap Field Model and Experimental Validation of Double Sided Hybrid Excited Linear Flux Switching Machine

Finite element and experimental method for analyzing the effects of martensite morphologies on the formability of DP steels

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