Variational asymptotic beam sectional analysis – An updated version

Yu, Wenbin; Hodges, Dewey H.; Ho, Jimmy C.

doi:10.1016/j.ijengsci.2012.03.006

Cited by 235 publications

(116 citation statements)

References 12 publications

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“…Hodges and co-workers [18][19][20] developed the Variational Asymptotic Beam Sectional Analysis (VABS), which is based on the variational asymptotic method. The tool decouples the three-dimensional problem into two-dimensional cross sectional analysis and one-dimensional beam analysis.…”

Section: Introductionmentioning

confidence: 99%

An efficient 3D numerical beam model based on cross sectional analysis and Ritz approximations

Stoykov

Manoach

Margenov

2015

Z. Angew. Math. Mech.

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A 3D beam model, i.e. a beam that may deform in space and experience longitudinal and torsional deformations, is developed considering Timoshenko's theory for bending and assuming that the cross section rotates as a rigid body but may deform in longitudinal direction due to warping. The cross sectional properties are firstly calculated and then inserted at the equation of motion. The beam is assumed to be with an arbitrary cross section, with linearly varying thickness and width, and with an initial twist. The model is appropriate for open and closed thin-walled cross sections, and also for solid cross sections. The objective of the current research is to demonstrate that complex beam structures can be modeled accurately with reduced number of degrees of freedom.

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Section: Introductionmentioning

confidence: 99%

An efficient 3D numerical beam model based on cross sectional analysis and Ritz approximations

Stoykov

Manoach

Margenov

2015

Z. Angew. Math. Mech.

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“…Using an inexpensive aeroelastic tool allows a higher number of design variables in the blade design, since increasing the number of variables also carries an increase in computational cost in the optimizer. Similarly, PreComp was selected for the structure due to its low computational cost compared to more advanced structural analysis tools such as BECAS [40] and VABS [41].…”

Section: Numerical Toolsmentioning

confidence: 99%

Design of the OffWindChina 5 MW Wind Turbine Rotor

2017

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Abstract:The current article describes the conceptual design of a rotor for a 5 MW machine situated at an offshore site in China (OffWindChina). The OffWindChina 5 MW rotor design work was divided into two parts between the Technical University of Denmark (DTU) and the Chong Qing University (CQU). The two parts consist of the aeroelastic and structural design phases. The aeroelastic part determines the optimal outer blade shape in terms of cost of energy (COE), while the structural part determines the internal laminate layup to achieve a minimum blade mass. Each part is performed sequentially using in-house optimization tools developed at DTU and CQU. The designed blade yields a high energy output while maintaining the structural feasibility with respect to international standards.

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“…In order to obtain the stiffness matrix of composite beams with arbitrary complex cross-sections a number of finite element based discretization tools have been developed, e.g. see Morandini et al (2010), Yu et al (2012) and Genoese et al (2014) in which Saint-Venant effect (including in-plane and out-of-plane sectional warping deformation) are incorporated. The stiffness matrix obtained from any of such tools can be directly used as the constitutive equation in current beam model.…”

Section: Extended Hamilton's Principlementioning

confidence: 99%