Simultaneous shape and topology optimization of prestressed concrete beams

Shakour, Emad

doi:10.1007/s00158-017-1855-5

Cited by 41 publications

(22 citation statements)

References 36 publications

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“…Further comprising the design of the reinforcing phase alone, algorithms based topology optimization has been offered for the design of both phases to enhance the destruction strength of lightweight elements [21]. Recently, an algorithmic topology optimization for the design of lightweight post-tensioned reinforced concrete was suggested by Amir and Shakour [22]. Søndergaard and Dombernowsky [23] investigated a reinforced concrete frame designed by the assumption of isotropic behavior of the material in an initial phase of design.…”

Section: Introductionmentioning

confidence: 99%

Impact Response of Hammerhead Pier Fibrous Concrete Beams Designed with Topology Optimization

Salaimanimagudam

Suribabu

Murali

et al. 2020

Period. Polytech. Civil Eng.

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Reducing the weight of concrete beams is a primary (beyond strength and durability) concern of engineers. Therefore, this research was directed to investigate the impact response of hammerhead pier concrete beams designed with density-based method topology optimization. The finite element topology optimization was conducted using Autodesk fusion 360 considering three different mesh sizes of 7 mm, 10 mm, and adaptive meshing. Three optimized hammerhead beam configurations; HB1, HB2, and HB3, respectively, with volume reductions greater than 50 %. In the experimental part of this research, nine beams were cast with identical size and configuration to the optimized beams. Three beams, identical to the optimized beams, were tested under static bending for verification purposes. In comparison, six more beams, as in the preceding three beams but without and with hooked end steel fibers, were tested under repeated impact load. The test results revealed that the highest flexural capacity and impact resistance at crack initiation and failure were recorded for the adaptive mesh beams (HB3 and HB3SF). The failure impact energy and ductility ratio of the beam HB3SF was higher than the beams HB1SF and HB2SF by more than 270 %. The results showed that the inclusion of steel fiber duplicated the optimized beam’s impact strength and ductility several times. The failure impact resistance of fibrous beams was higher than their corresponding plain beams by approximately 2300 to4460 %, while their impact ductility ratios were higher by 6.0 to 18.1 times.

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Section: Introductionmentioning

confidence: 99%

Impact Response of Hammerhead Pier Fibrous Concrete Beams Designed with Topology Optimization

Salaimanimagudam

Suribabu

Murali

et al. 2020

Period. Polytech. Civil Eng.

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“…With advanced algorithms, not only the concrete distribution was optimised, but the optimal shape and curvature of the post-tension cable were also determined. The objective was to minimise the displacements at the top surface of the beam, because of the combined action of the external loads and the post-tensioning tendon [103]. As the implementation of the optimisation procedure was until then developed in 2D, some post-processing was necessary for the final design, and a 3D finite element analysis was performed to determine the design values and limits.…”

Section: D-printed Concrete Girder Designed By Topology Optimisationmentioning

confidence: 99%

Opportunities and challenges for structural engineering of digitally fabricated concrete

Menna

Mata‐Falcón

Bos

et al. 2020

Cement and Concrete Research

155

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“…Further comprising the design of the reinforcing phase alone, algorithms based topology optimization has been offered for design of both phases to enhance the destruction strength of lightweight components [13]. Lately, an algorithmic topology optimization for the design of lightweight post-tensioned reinforced concrete was suggested by Amir and Shakour [14]. Søndergaard and Dombernowsky [15] investigated a reinforced concrete frame designed by the assumption of isotropic behavior of the material in an initial phase of design.…”

Section: Introductionmentioning

confidence: 99%

Study of Topology Optimized Hammerhead Pier Beam Made with Novel Preplaced Aggregate Fibrous Concrete

Karthikeyan

2020

Period. Polytech. Civil Eng.

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This study aims to study topology Optimized Hammerhead Pier Beam (TOHPB) designed with a density-based technique. TOHPB is made with Preplaced Aggregate Fibrous Concrete (PAFC), which comprises two main preparation processes. First, the fibers and coarse aggregates filled into empty formwork to develop a skeletal system. Second, voids in the skeletal system are filled with cement grout; hence a type of PAFC was obtained. Besides, alleviating the self-weight of the concrete beam is a top priority of design engineering without compromising its strength and durability. The effect of topology optimization in association with the safety of factors and elastic design case is considered in this study. Explicitly, (i) compliance is scaled down to a minimum under a perimeter on the utilized material (ii) the principle Drucker-Prager is employed to impose the stress limitations even though utilization of material is minimized. The problem is designed with imposed stress limitation and generates keys that involve an essential part of post-processing before fabrication. In total, ten TOHPB were prepared with and without the combined shape of crimped-hooked end steel fiber. Two different types of fiber reinforcement schemes were used; first, the fibers were reinforced to full beam cross-section; then, the fibers were reinforced to the top half of the beam cross-section. Results revealed that the TOHPB beam reinforced full cross-section exhibited better ultimate load performance than that of the beam with half reinforced cross-section.

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Simultaneous shape and topology optimization of prestressed concrete beams

Cited by 41 publications

References 36 publications

Impact Response of Hammerhead Pier Fibrous Concrete Beams Designed with Topology Optimization

Impact Response of Hammerhead Pier Fibrous Concrete Beams Designed with Topology Optimization

Opportunities and challenges for structural engineering of digitally fabricated concrete

Study of Topology Optimized Hammerhead Pier Beam Made with Novel Preplaced Aggregate Fibrous Concrete

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