A study on ultimate behaviour of composite space truss

Sangeetha, P.; Senthil, R.

doi:10.1007/s12205-016-0920-8

Cited by 16 publications

(6 citation statements)

References 10 publications

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“…Truss systems are commonly implemented in several structural systems including space structures, high-span bridge systems and bracing the skeleton buildings. Recently, it is reported that the implementation of the linear analysis to investigate the structural applications is not sufficiently reliable without considering nonlinearities [1][2][3][4]. Instead, the development of engineering science and growth in computer processing power have made it possible to conduct an efficient nonlinear analysis.…”

Section: Introductionmentioning

confidence: 99%

Improved Homotopy Perturbation Method for Geometrically Nonlinear Analysis of Space Trusses

et al. 2020

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The objective of this study is to explore a noble application of the improved homotopy perturbation procedure bases in structural engineering by applying it to the geometrically nonlinear analysis of the space trusses. The improved perturbation algorithm is proposed to refine the classical methods in numerical computing techniques such as the Newton–Raphson method. A linear of sub-problems is generated by transferring the nonlinear problem with perturbation quantities and then approximated by summation of the solutions related to several sub-problems. In this study, a nonlinear load control procedure is generated and implemented for structures. Several numerical examples of known trusses are given to show the applicability of the proposed perturbation procedure without considering the passing limit points. The results reveal that perturbation modeling methodology for investigating the structural performance of various applications has high accuracy and low computational cost of convergence analysis, compared with the Newton–Raphson method.

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Section: Introductionmentioning

confidence: 99%

Improved Homotopy Perturbation Method for Geometrically Nonlinear Analysis of Space Trusses

et al. 2020

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“…Anis Saggaff et.al [6], studied the composite action of a cold-formed steel section with bolted shear connectors of 16 mm diameter, which yielded better strength and moment carrying capacity. Sangeetha P et.al [7][8][9][10], studied the composite action of a sandwich beam and composite space truss under ultimate loading conditions. The conclusions drawn from their study were that full composite action in composite structures is achieved by using proper shear connectors.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behaviour of a Cold-Formed Steel-Concrete Composite Beam with Channel Type Shear Connector – An Experimental and Analytical Study

Sangeetha

2019

Civil and Environmental Engineering Reports

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Steel-concrete composite structures are widely used in the current construction of bridges and multi-storey buildings. The effect of shear connectors in a cold-formed steel-composite beam was studied under flexure. The number of channel connectors in the specimen was varied and the same was compared with a specimen without shear connectors. The performance and failure of cold-formed steel-composite beams were then studied. The presence of shear connectors in the tension zone prevents the formation of cracks which are the major cause of failure in a beam subjected to bending. The load-carrying capacity is greater in a composite beam and an increase in the number of channel connectors from one to five increases the load-carrying capacity by 60 % as compared to a specimen without a connector. A composite beam with five connectors is more ductile, with a ductility factor of 14. The Composite beams were also analysed using the finite element software ANSYS and were found to have good agreement with the experimental results.

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“…The behaviour of a composite space truss of 3 m x 2 m with 50 mm concrete slab up to service load and ultimate load was studied. This indicated that composite action was achieved with steel flat and bolt as shear connectors between the space truss and concrete slab [2][3]. The parametric study was carried out on a composite space truss of 30 m x 30 m for four different conditions using the finite element software ANSYS and concluded that the finite element model was able to predict the behaviour of the composite space truss [4].…”

Section: Introductionmentioning

confidence: 99%

Analytical Study on the Behaviour of Composite Space Truss Structures with Openings in a Concrete Slab

Kumar¹,

Prakash²,

Sangeetha³

2020

Civil and Environmental Engineering Reports

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A space truss structural system is a three-dimensional arrangement of linear elements in a pyramid pattern forming a Double Layer Grid (DLG) system. Space trusses are an elegant and economical means of covering larger areas such as roof systems, in a wide variety of applications such as a stadium, aircraft-hanger, assembly hall, etc. The major problem encountered in using the space truss as a roofing system is the sudden failure of the whole structure due to critical buckling of the top chord member. Earlier research has shown that the optimal solution to overcome such a failure is by providing a small thickness of concrete slab over the space truss, so that the space truss with concrete slab (Composite Space Truss) will act as a floor system for the multi-storey building. For better ventilation and lighting in the building, the need for openings in the composite space truss is unavoidable; however, providing an opening in the concrete slab will reduce the load carrying capacity of the structure. The analysis of a composite space truss of size 30m x 30m with all possible locations of openings for four different support conditions was carried out using ANSYS in order to study the load - deflection behaviour. Further, the ductility factor and energy absorption capacity of the composite space truss with different locations of slab openings were compared.

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A study on ultimate behaviour of composite space truss

Cited by 16 publications

References 10 publications

Improved Homotopy Perturbation Method for Geometrically Nonlinear Analysis of Space Trusses

Improved Homotopy Perturbation Method for Geometrically Nonlinear Analysis of Space Trusses

Flexural Behaviour of a Cold-Formed Steel-Concrete Composite Beam with Channel Type Shear Connector – An Experimental and Analytical Study

Analytical Study on the Behaviour of Composite Space Truss Structures with Openings in a Concrete Slab

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