Optimal dome design considering member-related design constraints

Talaslioglu, Tugrul

doi:10.1007/s11709-019-0543-5

Cited by 10 publications

(9 citation statements)

References 23 publications

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“…In this regard, the design of SDS with various geometrical configurations is optimized thereby utilizing a MOA named Pareto Archived Genetic Algorithm (PAGA) along with the displacement, joint and member-related design constraints. It is noted that the computing performance of PAGA was also evaluated considering several multi-objective evolutionary algorithms named NSGAII [27], SMSEMOA [28], MOEA/D [29], PESAII [30], SPEA2 [31], eMOEA [32], [21].…”

Section: Integration Of An Automatic Dome Generating Tool For Conceptmentioning

confidence: 99%

“…Use of an appropriate structural analysis approach Due to the discrete nature of SDS, there exists a high tendency to inherently a significant configurational change in its structural system under any external loading condition. Although the member responses of SDS are well below a yield point of material, the nodal displacements of SDS may suddenly reach to the higher values [19][20][21]. In fact, the larger nodal displacements cause also to be arisen a global stability-related failure in SDS although the stabilities of SDS members are not lost.…”

Section: Introductionmentioning

confidence: 99%

“…Following the computation of fitness values of current population individuals and determination of pareto solutions, the evolutionary search of PAGA continues until the pre-assumed generation number is completed. The further details about the working mechanism of PAGA is presented in [21].…”

Section: A Brief Introduction To Pagamentioning

confidence: 99%

“…The serviceability capability of SDS is kept under the control thereby limiting the joint displacements by an upper bound. The member responses under the external static loads are computed by a trend nonlinear structural analysis approach named "arc length" which is proved to be successful in both tracing the equilibrium path and identifying the critical points located on the equilibrium path [20][21][22]. Thus, it is possible to compute the global stability capacity of SDS by the arc length method while the member stability capacity is checked through the use of the provisions of API RP2A-LRFD specification.…”

Section: A Brief Introduction To Pagamentioning

confidence: 99%

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A Unified Optimal Design Approach for Geometrically Nonlinear Skeletal Dome Structures

Talaslıoğlu

2019

Period. Polytech. Civil Eng.

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In this study, a unified optimal design approach is proposed for the design of skeletal dome structure (SDS). Thus, this study has three objectivities, i) presenting the emergence of proposed design integrity, ii) applying the proposed optimal design approach for the design optimization geometrically nonlinear SDS with both ellipse and sphere-shaped forms considering both the shape, size and topology-related design variables, iii) determining the dominant design criteria in the design of SDS. In this framework, the design of SDS is optimized thereby minimizing its entire weight and joint displacements and maximizing its member forces at the same time. The design constraints are borrowed from the provisions of American Petroleum Institute (API RP2A-LRFD) specification. A multi-objective optimization algorithm (MOA) named Pareto Archived Genetic Algorithm (PAGA), as an optimization tool is integrated by an automatic dome generating tool. Therefore, the novelty of this study comes from being the first attempt to obtain the optimal design in a way of integrating both member and joint-related design constraints by the geometrically nonlinear structural analysis. Consequently, it is displayed that that the proposed optimal design approach facilitates to determine an appropriate optimal design through a tradeoff analysis for designers depending on their preferences. The design concepts concerned with buckling, axial stress, combination of axial & bending, and yielding have the higher dominant effects in the optimal design of SDS. Furthermore, it is also demonstrated that the inclusion of diagonal members into the design of SDS provides a reduction in the violation of dominant design constraints.

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Section: Integration Of An Automatic Dome Generating Tool For Conceptmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: A Brief Introduction To Pagamentioning

confidence: 99%

Section: A Brief Introduction To Pagamentioning

confidence: 99%

See 2 more Smart Citations

A Unified Optimal Design Approach for Geometrically Nonlinear Skeletal Dome Structures

Talaslıoğlu

2019

Period. Polytech. Civil Eng.

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“…This main loop is terminated once the maximum generation number is completed. The further details about working principle of PAGA are presented in Reference Talaslioglu [22].…”

Section: The Working Mechanism Of Proposed Evolutionary-based Multi-omentioning

confidence: 99%

Design Optimization of Tubular Lattice Girders

Talaslıoğlu¹

2019

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The lattice girder, members of which are constructed by use of ready profiles with tubular cross-sections, has a simple but an effective structural framing form. In this regard, this study proposes to optimize the design of tubular lattice girders i n a way of minimizing its entire weight and joint displacement and maximizin g its load-carrying capacity considering the design codes of API RP2A-LRFD. As an optimization tool, a multi-objective optimization methodology named pareto archived genetic algorithm (PAGA) was utilized. The search capability of PAGA was improved by invol ving a designer module for automatically creation of a lattice girder form. The improved PAGA has a big responsibility of increasing the convergence degree of optimal designs against the stability problem. Furthermore, the content of this study is enriched by evaluating the computing efficiency of PAGA with respect to several multi-objective optimization algorithms. Consequently, the improved PAGA achieves to explore the optimal lattice girder designs with the higher convergence, diversity and capacity degr ees. Therefore, the proposed optimum lattice girder design tool is recommended for the designers due to its capability of obtaining a wide range of promising designs.

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The effect of different strain quantities on behavior of pin-jointed structural systems

Talaslioglu

2022

J Braz. Soc. Mech. Sci. Eng.

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Optimal dome design considering member-related design constraints

Cited by 10 publications

References 23 publications

A Unified Optimal Design Approach for Geometrically Nonlinear Skeletal Dome Structures

A Unified Optimal Design Approach for Geometrically Nonlinear Skeletal Dome Structures

Design Optimization of Tubular Lattice Girders

The effect of different strain quantities on behavior of pin-jointed structural systems

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