Optimized dynamic design of laminated piezocomposite multi-entry actuators considering fiber orientation

Salas, Ruben Andres; Ramírez-Gil, Francisco Javier; Rubio, Wilfredo Montealegre; Silva, Emilío Carlos Nelli; Reddy, J. N.

doi:10.1016/j.cma.2018.02.011

Cited by 26 publications

(5 citation statements)

References 47 publications

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“…A comparison of these methodologies using various numerical examples is contained in [111,112]. Another work proposed a self-penalization interpolation model for fiber orientation (SPIMFO) based on convergent Taylor series for sine and cosine functions to optimize composite hyperelastic material [113] and the dynamic design of laminated piezo-composite actuators [114].…”

Section: Discrete Parameterizationmentioning

confidence: 99%

A Review on Topology Optimization Strategies for Additively Manufactured Continuous Fiber-Reinforced Composite Structures

Gandhi

Minak

2022

Applied Sciences

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Topology Optimization (TO) recently gained importance due to the development of Additive Manufacturing (AM) processes that produce components with good mechanical properties. Among all additive manufacturing technologies, continuous fiber fused filament fabrication (CF4) can fabricate high-performance composites compared to those manufactured with conventional technologies. In addition, AM provides the excellent advantage of a high degree of reconfigurability, which is in high demand to support the immediate short-term manufacturing chain in medical, transportation, and other industrial applications. CF4 enables the fabrication of continuous fiber-reinforced composite (FRC) materials structures. Moreover, it allows us to integrate topology optimization strategies to design realizable CFRC structures for a given performance. Various TO strategies for attaining lightweight and high-performance designs have been proposed in the literature, exploiting AM’s design freedom. Therefore, this paper attempts to address works related to strategies employed to obtain optimal FRC structures. This paper intends to review and compare existing methods, analyze their similarities and dissimilarities, and discuss challenges and future trends in this field.

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Section: Discrete Parameterizationmentioning

confidence: 99%

A Review on Topology Optimization Strategies for Additively Manufactured Continuous Fiber-Reinforced Composite Structures

Gandhi

Minak

2022

Applied Sciences

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“…While owing to the limitations of traditional manufacturing methods, the fibers of FRC structures are mostly restricted to predesigned fixed directions, for example, 0 ° , ±45 ° , 90 ° , etc. (Setoodeh et al, 2005; Stegmann and Lund, 2005; Duan et al, 2015; Salas et al, 2018; Da Silva et al, 2020). Therefore, the positive role of fiber orientations in reinforcing the FRC structures cannot be fully performed.…”

Section: Introductionmentioning

confidence: 99%

Strength-constrained simultaneous optimization of topology and fiber orientation of fiber-reinforced composite structures for additive manufacturing

Yang

Wang

2022

Advances in Structural Engineering

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Additive manufacturing (AM) enables flexible fabrication of lightweight fiber-reinforced composite (FRC) structures with topological optimized geometries and fiber orientations. However, premature failure may occur if the manufactured FRC structure is not properly designed against stress distribution. The present study develops a strength-constrained optimization algorithm by considering the 3D printed filament embedded with fiber to be orthotropic material. The Tsai–Wu criterion is incorporated in the topological and fiber orientation optimization process. The element density and the fiber angle are formulated as design variables to simultaneously optimize the distribution of matrix and fiber. Meanwhile, both design variables are filtered to prevent checkerboard patterns of matrix elements and to ensure the continuity of fiber angle. A P-norm approach combined with an adaptive normalization scheme is employed to achieve the global strength constraint and reduce the difference between the P-norm value and the actual maximum Tsai–Wu value. Sensitivity analysis of objective function and strength-constraint conditions with respect to design variables is carried out and it serves as a basis for the method of moving asymptotes. Topological optimization of three typical numerical examples under different loading conditions are conducted and the effectiveness of the proposed method is validated. 73.7% decrease in maximum Tsai–Wu value of the optimized L-shaped beam as well as a slight increase (∼0.2%) in compliance are obtained in comparison with the compliance-based design result.

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“…Optimization of CFRP materials mainly includes two aspects, i.e., orientation optimization and thickness optimization. Structural performance may be completely different if different fiber orientations are selected due to anisotropic properties of CFRP materials [8]. Actually, it provides opportunities to achieve the desired performance of the composite structures by selecting appropriate fiber orientations in each layer.…”

Section: Introductionmentioning

confidence: 99%

Topology Optimization of Metal and Carbon Fiber Reinforced Plastic (CFRP) Laminated Battery-Hanging Structure

Chen

Gao

2020

Polymers

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This study addressed the topology optimization of a carbon fiber reinforced plastic (CFRP) laminated battery-hanging structure of an electric vehicle. To accommodate parameterization for thickness and orientation of CFRP materials, the discrete material and thickness optimization (DMTO) technique was adopted. To include metal material as a reinforcement structure into the optimization simultaneously, the DMTO technique was extended here to achieve concurrent optimization of CFRP thickness topology, CFRP orientation selection and the topology of the metal reinforcement plate. Manufacturing constraints were applied, including suppressing intermediate void across the thickness direction of the laminate, contiguity constraint and the symmetrical layers. Sensitivities of the objective function were derived with respect to design variables. To calculate analytical sensitivities, finite element analysis was conducted and strain vectors were exported from a commercial software (ABAQUS) into a mathematical analysis tool (MATLAB). The design objective was to minimize the local displacement subject to the constraints of manufacturing and mass fraction. The mechanical performance of the optimized CFRP structure was compared with the original steel structure. To validate the optimization results, a prototype of the CFRP battery-hanging structure was fabricated and experimental testing was conducted. The results show that the total mass of the CFRP battery-hanging structure was reduced by 34.3% when compared with the steel one, while the mechanical property was improved by 25.3%.

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Optimized dynamic design of laminated piezocomposite multi-entry actuators considering fiber orientation

Cited by 26 publications

References 47 publications

A Review on Topology Optimization Strategies for Additively Manufactured Continuous Fiber-Reinforced Composite Structures

A Review on Topology Optimization Strategies for Additively Manufactured Continuous Fiber-Reinforced Composite Structures

Strength-constrained simultaneous optimization of topology and fiber orientation of fiber-reinforced composite structures for additive manufacturing

Topology Optimization of Metal and Carbon Fiber Reinforced Plastic (CFRP) Laminated Battery-Hanging Structure

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