Design of ultra-lightweight and energy-efficient civil structures through shape morphing

Reksowardojo, Arka P.; Senatore, Gennaro

doi:10.1016/j.compstruc.2023.107149

Cited by 4 publications

(2 citation statements)

References 40 publications

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“…However, the optimal stiffness is dependent on various variables and a single-stiffness flexible component may not always meet the requirements for performance enhancement under all conditions [ 8 ]. Therefore, several variable stiffness mechanisms in different fields have been proposed [ 21 , 22 , 23 , 24 ]. Nevertheless, the integration of complex structures poses challenges.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Novel Bionic Tensegrity Robotic Fish with a Continuum Body

Chen,

Wang,

Xiong

et al. 2024

Biomimetics

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Biological fish exhibit remarkable adaptability and exceptional swimming performance through their powerful and flexible bodies. Therefore, designing a continuum flexible body is significantly important for the development of a robotic fish. However, it is still challenging to replicate these functions of a biological body due to the limitations of actuation and material. In this paper, based on a tensegrity structure, we propose a bionic design scheme for a continuum robotic fish body with a property of stiffness variation. Its detailed structures and actuation principles are also presented. A mathematical model was established to analyze the bending characteristics of the tensegrity structure, which demonstrates the feasibility of mimicking the fish-like oscillation propulsion. Additionally, the stiffness variation mechanism is also exhibited experimentally to validate the effectiveness of the designed tensegrity fish body. Finally, a novel bionic robotic fish design scheme is proposed, integrating an electronic module-equipped fish head, a tensegrity body, and a flexible tail with a caudal fin. Subsequently, a prototype was developed. Extensive experiments were conducted to explore how control parameters and stiffness variation influence swimming velocity and turning performance. The obtained results reveal that the oscillation amplitude, frequency, and stiffness variation of the tensegrity robotic fish play crucial roles in swimming motions. With the stiffness variation, the developed tensegrity robotic fish achieves a maximum swimming velocity of 295 mm/s (0.84 body length per second, BL/s). Moreover, the bionic tensegrity robotic fish also performs a steering motion with a minimum turning radius of 230 mm (0.68 BL) and an angular velocity of 46.6°/s. The conducted studies will shed light on the novel design of a continuum robotic fish equipped with stiffness variation mechanisms.

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Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Novel Bionic Tensegrity Robotic Fish with a Continuum Body

Chen,

Wang,

Xiong

et al. 2024

Biomimetics

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“…Considerations relating to the minimization of the lifespan energy in the design process of adaptive structures have been outlined by Senatore et al [17,18]. Two different prototypes were developed within the scope of this research: an actuated cantilever truss [19] and a pedestrian bridge with simple support [20].…”

mentioning

confidence: 99%

Investigation of Pressure Chambers for Integrated Fluidic Actuators in Adaptive Slabs

Bosch,

Nitzlader,

Bachmann

et al. 2024

Actuators

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A high proportion of the CO2 emissions worldwide are caused by the construction sector or are associated with buildings. Every part of the industry needs to reduce its share of emissions, so the building sector must also do its part. One possible solution for achieving this reduction in the field of load-bearing structures is the use of adaptive structures. This research focuses on adaptive slab structures, which require specific actuators to be integrated into the system. Conventional actuators are not suitable due to the prevailing requirements, namely installation space and performance. For this investigation, the actuator is divided into different functional components. A rough description of the requirements for one component, namely the energy converter, is given. Different concepts are developed, tested, and compared with numerical results. Due to the requirements, the concepts are limited to hydraulics. The authors then present a comparison of different simulation strategies for the energy converter. Overall, this paper provides a new contribution to the design of energy converter concepts for integrated hydraulic actuators in slabs, along with experimental verification of the working principle of the energy converters to meet the requirements. A simplified numerical model is proposed to estimate the behavior of the energy converter during the early design phase.

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Topology Optimization of Adaptive Structures: New Limits of Material Economy

Senatore,

Wang

2024

Computer Methods in Applied Mechanics and Engineering

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Design of ultra-lightweight and energy-efficient civil structures through shape morphing

Cited by 4 publications

References 40 publications

Design and Analysis of a Novel Bionic Tensegrity Robotic Fish with a Continuum Body

Design and Analysis of a Novel Bionic Tensegrity Robotic Fish with a Continuum Body

Investigation of Pressure Chambers for Integrated Fluidic Actuators in Adaptive Slabs

Topology Optimization of Adaptive Structures: New Limits of Material Economy

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