Evaluation of non-linear analysis of guyed antenna towers

Wahba, Yohanna M. F.; Madugula, Murty K. S.; Monforton, Gerard R.

doi:10.1016/s0045-7949(98)00025-x

Cited by 31 publications

(19 citation statements)

References 2 publications

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“…Different analytical and computational methods for evaluation of the strain-stress behaviour were suggested by Wahba et al [3], He et al [4], and Gioffrè et al [5]. Several researchers pursued improvements of mast structure seeking the least possible weight (synonymous with cost) of the structure (Jasim and Galeb [6]).…”

Section: Introductionmentioning

confidence: 99%

Optimization of Rigidly Supported Guyed Masts

Belevičius

Jatulis

Rusakevičius

et al. 2017

Advances in Civil Engineering

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A technique for simultaneous topology, shape, and sizing optimization of tall guyed masts is presented in this paper. The typical scheme of telecommunication masts that are triangular in plan and supported by a certain number of guys' levels is examined. The objective function is the total mass of the mast, including the mass of the guys. The mast structure is optimized for self-weight and wind loading that is evaluated according to Eurocodes. The nonlinear behaviour of the guyed mast is simplified idealizing the nonlinear guys as approximate boundary conditions for the mast. A comparison of the simplified solution with the results of nonlinear analysis with Ansys shows small discrepancies that are on the safe side. The constraints involve all strength, local and global stability, and slenderness requirements. The optimization problem is solved using evolutionary algorithm with original genome repair procedure. As an example, a typical 96 m guyed broadcasting antenna for mobile-phone networks was designed employing the proposed optimization technique and taking up to 10 guys' levels. It is shown that the optimal mast is supported by 3-5 guys' levels. The optimal ranges of all remaining design variables were also obtained.

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Section: Introductionmentioning

confidence: 99%

Optimization of Rigidly Supported Guyed Masts

Belevičius

Jatulis

Rusakevičius

et al. 2017

Advances in Civil Engineering

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“…Some efficient ways to assess the responses of guyed towers are available in the literature [5][6][7][8]. Madugula [9] and Smith [10] studied the responses of guyed towers subjected to wind loads, whereas Irvine [11] has expanded the simplified dynamic analysis models under wind loads by using modal decomposition.…”

Section: Introductionmentioning

confidence: 99%

Geometric nonlinear static and dynamic analysis of guyed towers using fully nonlinear element formulations

Shi¹,

Salim

2015

Engineering Structures

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“…The mast, not a very complicated structure to equip, belongs to the class of prestressed structures of geometrically non-linear behaviour (Sokolov 1961;Wahba et al 1998;Voevodin 1989;Gantes et al 1993). Analysis of such structures, taking into account not only static but also dynamic action of wind, is complicated (Juozaitis et al 2002;Gantes et al 1993;Ben Kahla 2000;Ghodrati Amini 2002;Guevera, McClure 1993;Melbourne 1997;Peil et al 1996;Yan-Li 2003).…”

Section: Introductionmentioning

confidence: 99%

“…A non-linear mast deforming is conditioned in principle by guys, ie pre-stressed suspension cables. Their response to loading is described by strongly geometrically non-linear behaviour (Juozaitis et al 2002;Wahba et al 1998;Voevodin 1989;Irvine 1992;Petersen 1993;Steel structures… 2002;Palkowski 1990;Halasz, Petersen 1970). The previously employed analytical methods, employed for mast analysis (Voevodin 1989;Steel structures…2002;Halasz, Petersen 1970), do not satisfy the modern design requirements and extent of such structures.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mast Behaviour Analysis and Peculiarities of Numerical Modelling/Stiebų Elgsenos Analizė Ir Skaitinio Modeliavimo Ypatumai

Juozapaitis

Kutas

Jatulis

2008

Journal of Civil Engineering and Management

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Abstract. Paper is assigned to numerical analysis peculiarities of masts applying specialised computer-aided design packages. Mast's deformable behaviour is described as non-linear one. The test problem of mast is solved by two widely applied in Lithuania computational packages STAADpro and Robot Millennium and the specialised programme for mast design SUDM. A corrected analytical method for mast guy analysis, taking into account a force component, acting along the guy supports. A performed numerical experiment is aimed to clarify the possibilities of the above-mentioned numerical analysis instruments for geometrical non-linear modelling of structure. The accuracy errors when determining the mast stress and strain fields by numerical analysis packages comparing with the ones obtained by a corrected analytical method are indicated. Possibilities of employing the considered computer-aided design programming packages for practical design of masts are discussed.

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Evaluation of non-linear analysis of guyed antenna towers

Cited by 31 publications

References 2 publications

Optimization of Rigidly Supported Guyed Masts

Optimization of Rigidly Supported Guyed Masts

Geometric nonlinear static and dynamic analysis of guyed towers using fully nonlinear element formulations

Mast Behaviour Analysis and Peculiarities of Numerical Modelling/Stiebų Elgsenos Analizė Ir Skaitinio Modeliavimo Ypatumai

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