Topology-optimized design, construction and experimental evaluation of concrete beams

Jewett, Jackson L.; Carstensen, Josephine V.

doi:10.1016/j.autcon.2019.02.001

Cited by 71 publications

(30 citation statements)

References 32 publications

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“…Since all topology optimized beams were fabricated and tested until failure, the possibility exists to address the consequence of design cases in the nonlinear range [55]. Though, it is worth recalling that the design considered in this study was based on linear performance.…”

Section: Experimental and Fe Results Of The Static Bending Testmentioning

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: Experimental and Fe Results Of The Static Bending Testmentioning

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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“…To meet the efflux time of grout, a Tech mix 640 commercial high range water reducing admixture was utilized to develop flowable cementitious grout. The water-reducing admixture dosage was varied from Carstensen [31] 0.3 % to 0.5 % of the cement weight. New hybrid crimpedhooked end steel fibers manufactured by Purushottam steel wool industries in Nagpur, India were utilized in this study.…”

Section: Experimental Programme 31 Base Materialsmentioning

confidence: 99%

“…6(a) illustrates the obtained results from the topology optimization using Autodesk Fusion 360. The algorithm-based topology optimized design by the Jewett and Carstensen [31] is illustrated in Fig. 6(b).…”

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confidence: 99%

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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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“…Tauzowksi et al [18] propose a novel approach of functor-oriented topology optimization of elastoplastic structures. Several other studies also state that this method is very useful to create lighter components in precision engineering [19], composite material [20], and civil engineering application [21,22].…”

Section: Introductionmentioning

confidence: 96%

Topology and Response Surface Optimization of a Bicycle Crank Arm with Multiple Load Cases

Ismail

Koo

2020

Applied Sciences

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This paper presents an application of topology optimization and response surface method to optimize the geometry of a bicycle crank arm and the experimental validation of it. This is purposely to reduce the crank arm mass and create a preliminary design of a lightweight structure necessary for the high-performance bicycle development. A three-dimensional bike crank arm model was made in the SpaceClaim software followed by a static finite element analysis using ANSYS Workbench 2019 R1. A multiple cycling load was applied simultaneously in seven crank angles of 30, 45, 60, 90, 120, 135, and 150° relative to the horizontal position to create the multiple loads to the crank. From there, topology optimization was then conducted to investigate the effect of mass constraint, stress constraint, angle of cycling, and crank materials on the topological pattern result. To minimize stress concentration at corners, a shape optimization using the response surface method was conducted and obtained the final geometry. From the result, it is shown that both optimization methods not only successfully reduce the crank arm mass and provide several optimum design options but also are able to reduce the maximum stress in the crank arm up to 20% after the optimization process. The experimental validation using a newly developed wireless measurement system shows a considerable agreement to the numerical results.

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Topology-optimized design, construction and experimental evaluation of concrete beams

Cited by 71 publications

References 32 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

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

Topology and Response Surface Optimization of a Bicycle Crank Arm with Multiple Load Cases

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