Topology Optimization in Aircraft and Aerospace Structures Design

Zhu, Jihong; Zhang, Weihong; Xia, Liang

doi:10.1007/s11831-015-9151-2

Cited by 670 publications

(260 citation statements)

References 135 publications

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“…Up to now, topology optimization has received remarkable success in both theoretical studies and practical applications [2][3][4], where topology optimization of continuum structures under dynamic loading is one challenge. Correlative researches in the field were mainly focused on two types of problems: one is topology optimization related to dynamic characteristics, the other is related to dynamic responses.…”

Section: Introductionmentioning

confidence: 99%

A MAC based excitation frequency increasing method for structural topology optimization under harmonic excitations

Liu

Zhu

et al. 2017

Int. J. Simul. Multisci. Des. Optim.

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-This work is focused on the topology optimization of structures that are subjected to harmonic force excitation with prescribed frequency and amplitude. As an important objective of such a design problem, the natural resonance frequency of the structure is driven far away from the prescribed excitation frequency for the purpose of avoiding resonance and reducing the vibration level. Therefore when the excitation frequency is higher than the natural resonance frequency of the structure, the natural resonance frequency will decrease, then the optimum topology configuration will be distorted with large amount of gray elements. A MAC (Modal Assurance Criteria) based excitation frequency increasing method is proposed to obtain a desired configuration. MAC is adopted here to track the natural resonance frequency which can provide the baseline reference for the current excitation frequency during the optimum iterative procedure. Then the excitation frequency increases progressively up to its originally prescribed value. By means of numerical examples, the proposed formulation can generate effective topology configurations which can avoid resonance.

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Section: Introductionmentioning

confidence: 99%

A MAC based excitation frequency increasing method for structural topology optimization under harmonic excitations

Liu

Zhu

et al. 2017

Int. J. Simul. Multisci. Des. Optim.

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“…For recent advances of topology optimization, the readers are referred to the literature surveys of Deaton and Grandhi [8], Guo and Cheng [9]. Meanwhile, structural topology optimization has been used widely in automobiles [10], buildings [11], and aircrafts [12] to gain a structure design with the best mechanical performance. However, the structure designs obtained by topology optimization are prone to be geometrically complex such as hollow structures and porous structures, which can hardly be fabricated using traditional machining.…”

Section: Introductionmentioning

confidence: 99%

Backbone cup – a structure design competition based on topology optimization and 3D printing

Zhu

Yang

Zhang

2016

Int. J. Simul. Multisci. Des. Optim.

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-This paper addresses a structure design competition based on topology optimization and 3D Printing, and proposes an experimental approach to efficiently and quickly measure the mechanical performance of the structures designed using topology optimization. Since the topology optimized structure designs are prone to be geometrically complex, it is extremely inconvenient to fabricate these designs with traditional machining. In this study, we not only fabricated the topology optimized structure designs using one kind of 3D Printing technology known as stereolithography (SLA), but also tested the mechanical performance of the produced prototype parts. The finite element method is used to analyze the structure responses, and the consistent results of the numerical simulations and structure experiments prove the validity of this new structure testing approach. This new approach will not only provide a rapid access to topology optimized structure designs verifying, but also cut the turnaround time of structure design significantly.

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“…Instead, parts need to be redesigned to truly benefit from AM opportunities (Atzeni and Salmi 2012). To fully exploit the large design freedom of AM, particulary topology optimization (TO) is universally recognized as a key enabling design technology (Rosen 2014;Zhu et al 2015).…”

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confidence: 99%

An additive manufacturing filter for topology optimization of print-ready designs

Langelaar

2016

Struct Multidisc Optim

273

177

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Additive manufacturing (AM) offers exciting opportunities to manufacture parts of unprecedented complexity. Topology optimization is essential to fully exploit this capability. However, AM processes have specific limitations as well. When these are not considered during design optimization, modifications are generally needed in post-processing, which add costs and reduce the optimized performance. This paper presents a filter that incorporates the main characteristics of a generic AM process, and that can easily be included in conventional density-based topology optimization procedures. Use of this filter ensures that optimized designs comply with typical geometrical AM restrictions. Its performance is illustrated on compliance minimization problems, and a 2D Matlab implementation is provided.

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Topology Optimization in Aircraft and Aerospace Structures Design

Cited by 670 publications

References 135 publications

A MAC based excitation frequency increasing method for structural topology optimization under harmonic excitations

A MAC based excitation frequency increasing method for structural topology optimization under harmonic excitations

Backbone cup – a structure design competition based on topology optimization and 3D printing

An additive manufacturing filter for topology optimization of print-ready designs

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