Static, seismic and stability analyses of a prototype wind turbine steel tower

Bazeos, Nikitas; Hatzigeorgiou, George D.; Hondros, I.D; Karamaneas, H. E.; Karabalis, Dimitris L.; Beskos, D.E.

doi:10.1016/s0141-0296(02)00021-4

Cited by 233 publications

(107 citation statements)

References 2 publications

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“…T he developed op tim isatio n m odels were successfully applied to a n existing 100 kW wind tu rb in e achieving a reduction of v ib ration level by d irect m axim ization of the system n a tu ra l frequencies. Bazeos et al (2002) presented th e results of a stru c tu ra l analysis of a 38 m high tu b u lar steel wind tu rb in e tower. W ith the aid of a refined F E m odel and o th er sim plified models recom m ended by ap p ro p riate design stan d ard s, th e s tru c tu re was analysed for static and seismic loads representing th e effects of gravity, th e operational and survival aerodynam ic conditions, and possible site dependent seismic excitation.…”

Section: A Nalysis and D Esignmentioning

confidence: 99%

“…Many of these examples examine simplified representations of the structures and dynamical systems which aim to sim ulate the dynamic response to within a reasonable degree of accuracy. Bazeos et al (2002), which considered the design of a 38 m prototype steel wind turbine tower, suggested th at tall steel towers are usually designed considering the effect of wind loads as the only source of environmental dynamic disturbances. The effect of earthquakes as a possible source of damage or loss of serviceability is often neglected, even in highrisk seismic areas.…”

Section: Seism Ic a Nalysis O F W Ind Turbinesmentioning

confidence: 99%

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Fragility analysis of steel and concrete wind turbine towers

Quilligan

O’Connor

Pakrashi

2012

Engineering Structures

140

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Section: A Nalysis and D Esignmentioning

confidence: 99%

Section: Seism Ic a Nalysis O F W Ind Turbinesmentioning

confidence: 99%

Fragility analysis of steel and concrete wind turbine towers

Quilligan

O’Connor

Pakrashi

2012

Engineering Structures

140

View full text Add to dashboard Cite

“…Several researches have been performed to study behaviour of tower for wind turbines. Numerical analysis was carried out by D.L.Karabalis with real geometry of a wind turbine [6]. Stresses at door opening and buckling analysis were reported.…”

Section: Introductionmentioning

confidence: 99%

Resistance of Door Openings in Towers for Wind Turbines

Tran¹,

Veljković²,

Rebelo³

et al. 2014

Proceedings of the 3rd South-East European Conference on Computational Mechanics (SEECCM III)

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Abstract. In this paper, a study of resistance of a lower part of a wind tower including a door opening is presented. Nonlinear 3-D shell element models with real geometry of lower tower segment have been used to simulate the thin walled shell structure in order to study the influence of door opening on the strength of the tower. Two possible alternatives for strengthening the door openings were considered: (i) increasing thicknesses of plate around the opening and (ii) stiffening the opening by a stiffener. Buckling analysis and nonlinear analysis were performed to obtain critical buckling modes and strength of the tower segment. Nominal material properties of different steel grades were considered to investigate possibility of using higher strength steels. A parametric study considering possible local shell imperfections according to EN1993-1-6 has been considered. Additionally, comparative studies have been performed based on the FE model without door opening.

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“…Early investigations (Bazeos et al 2002;Lavassas et al 2003) of earthquake loading focused on tower loading using models that lump the nacelle and rotor as a point mass. These were incapable of considering the simultaneous combination of seismic and wind loads.…”

Section: Introductionmentioning

confidence: 99%

“…Migration to models that include dynamics of the rotor also is dictated by industry-standard load cases in situations such as an emergency shutdown triggered by an earthquake (IEC 2005). In addition to modeling techniques, researchers investigated effects such as soil-structure interaction through equivalent springs and dampers (Bazeos et al 2002;Zhao and Maisser 2006). Each of these publications approaches modeling seismic loads for wind turbines differently.…”

Section: Introductionmentioning

confidence: 99%