Geometrically nonlinear aeroelastic characteristics of highly flexible wing fabricated by additive manufacturing

Tsushima, Natsuki; Tamayama, Masato; Arizono, Hitoshi; Makihara, Kanjuro

doi:10.1016/j.ast.2021.106923

Cited by 19 publications

(7 citation statements)

References 21 publications

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“…Space systems require lightweight and high-performance capability that increase the complexity of system structure and manufacturing processes. Tsushima et al [139] argued that additive manufacturing should be adopted to make large flexible structures with geometrically nonlinear aeroelastic characteristics. To sense and respond a change in the space environment, sensing technologies (i.e., addressable and flexible sensor, thin film electronic matrix, and wireless sensor targets) and self-healing materials (i.e., microencapsulated elastomers) have been widely explored to meet some unique requirements of space habitats.…”

Section: ) Spacecraft Designmentioning

confidence: 99%

The State of the Art of Information Integration in Space Applications

Yung

et al. 2022

IEEE Access

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This paper aims to present a comprehensive survey on information integration (II) in space informatics. With an ever-increasing scale and dynamics of complex space systems, II has become essential in dealing with the complexity, changes, dynamics, and uncertainties of space systems. The applications of space II (SII) require addressing some distinctive functional requirements (FRs) of heterogeneity, networking, communication, security, latency, and resilience; while limited works are available to examine recent advances of SII thoroughly. This survey helps to gain the understanding of the state of the art of SII in sense that (1) technical drivers for SII are discussed and classified; (2) existing works in space system development are analyzed in terms of their contributions to space economy, divisions, activities, and missions; (3) enabling space information technologies are explored at aspects of sensing, communication, networking, data analysis, and system integration; (4) the importance of first-time right (FTR) for implementation of a space system is emphasized, the limitations of digital twin (DT-I) as technological enablers are discussed, and a concept digital-triad (DT-II) is introduced as an information platform to overcome these limitations with a list of fundamental design principles; (5) the research challenges and opportunities are discussed to promote SII and advance space informatics in future.INDEX TERMS Information integration (II), space informatics, digital triad (DT-II), internet of digital-triad things (IoDTT), first-time right (FTR), space information integration (SII). FIGURE 2. Technical drivers of II applications.

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Section: ) Spacecraft Designmentioning

confidence: 99%

The State of the Art of Information Integration in Space Applications

Yung

et al. 2022

IEEE Access

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“…Ayrıca, eklemeli imalat teknolojisi ile talaşlı imalat yöntemlerinde olduğu gibi parçadan malzeme kaldırarak üretim yapmak yerine, malzemeleri birbirine katman ekleyerek üretim yapıldığı için malzeme israfı minimum seviyededir [7,8]. Ek olarak, eklemeli imalat teknolojisi otomotiv [9], uzay-havacılık [10], biyomedikal [11], denizcilik ve mimari gibi birçok alanda [12,13] önemli bir role sahip olup sırasıyla çarpışma kutusu [14], uçak kanat yapıları [15], implantlar [16], iskele yapıları [17] ve ilaç salınım sistemleri [18], pervane [19] ve mimari yapılar [20] bu alanların başlıca uygulamalarındandır. Bilindiği üzere eriyik yığma modelleme metodu (EYM) ucuz, kolay ulaşılabilir ve geniş malzeme portföyüne sahip olmasından dolayı en sık kullanılan eklemeli imalat yöntemlerinden birisi olup [21], bu yöntemde eritilen filament, nozzle'dan geçerek tasarlanan parçayı oluşturmak üzere katman üretim platformuna inşa edilmektedir [22][23][24][25].…”

Section: Giriş (Introduction)unclassified

Eriyik yığma modelleme ile üretilen PET-G parçaların katman yüksekliğine ve test sıcaklığına bağlı darbe davranışı

Ergene

ISPARTALI

KARAKILINÇ

2023

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Son yüzyılda, polilaktik asit (PLA), akrilonitril bütadien stiren (ABS) ve polietilen tereftalat glikol (PET-G) gibi polimer malzemeler hafif, ucuz, sürdürülebilir olması ve mühendislik uygulamaları için yeterli dayanımı sağladıklarından dolayı bir çok endüstriyel alanda sıklıkla kullanılmaktadır. Plastik malzemeler çoğunlukla ekstrüzyon metoduyla üretilse de, üç boyutlu (3B) baskı yöntemi de geleneksel imalat yöntemlerine göre avantajlarından dolayı son on yılda araştırmacıların dikkatini çekmektedir. 3B baskı ile üretilen polimerlerle ilgili literatürdeki çalışmalar incelendiğinde, çalışmaların çoğunlukla çekme, basma, üç nokta eğme gibi mekanik performansı belirleyici testler üzerine odaklandığı görülmektedir. Bu çalışmada ise, eriyik yığma modelleme (EYM) metoduyla üretilen PET-G parçaların sertlik ve çekme dayanımlarının belirlenmesinin yanı sıra, parçaların 20 ⁰C, 40 ⁰C ve 60 ⁰C gibi farklı ortam sıcaklıklarındaki ağırlık düşürme darbe yanıtına, katman yüksekliğinin (0,1 mm, 0,2 mm ve 0,4 mm) etkisi araştırılmıştır. Sonuçlar göstermektedir ki, katman yüksekliği 0,4 mm olan parçada maksimum ortalama sertlik değeri 69,4 Shore D olarak elde edilirken, minimum ortalama çekme dayanım değeri ise 39.24 MPa olarak aynı parçada gözlemlenmiştir. Ayrıca, enerji emmede katman yüksekliğinin test sıcaklığından daha baskın olduğu belirlenmiştir. Sonuç olarak, 60 ⁰C ortam sıcaklığında test edilen 0,1 mm katman yüksekliğindeki numunede maksimum emilen enerji 67.335 J olarak gözlemlenmiştir. Öte yandan, 0,4 mm katman yüksekliğine sahip ve 40 ⁰C ortam sıcaklığında test edilen numune, 28.070 J ile minimum enerji emmiştir. Son olarak makroskopik ve mikroskobik tespitlere göre 0,4 mm katman yüksekliğine sahip numunelerde herhangi bir çatlak gözlemlenmezken, katman yüksekliği 0,1 mm ve 0,2 mm olan numunelerde ise merkezden köşelere doğru uzanan çatlakların oluştuğu tespit edilmiştir.

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“…AM models also have challenges due to the nature of the fabrication method and the material used. The mechanical properties of AM structures highly depend on printing process parameters (Fernandes et al , 2021; Tsushima et al , 2021). Plastic models cannot usually endure several test cycles due to fatigue (Aghanajafi and Daneshmand, 2010) and are not reliable at high speeds due to their low stiffness and strength (Zhu et al , 2019b).…”

Section: Introductionmentioning

confidence: 99%

“…In fact, the low stiffness or large flexibility might be desirable and more representative of real models (Zhu et al , 2019b). Several authors (Su and Cesnik, 2011; Tsushima et al , 2021; del Carre et al , 2019) have developed geometric nonlinear aeroelastic models of flexible wings because they experience large deformations. Tsushima et al (2021) used FDM to manufacture a flexible solid rectangular wing.…”

Section: Introductionmentioning

confidence: 99%

“…Several authors (Su and Cesnik, 2011; Tsushima et al , 2021; del Carre et al , 2019) have developed geometric nonlinear aeroelastic models of flexible wings because they experience large deformations. Tsushima et al (2021) used FDM to manufacture a flexible solid rectangular wing. The results from the wind tunnel test show a good agreement between the printed model and the computational results using the unsteady vortex lattice method and MacNeal-Schwendler Corporation (MSC).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of additively manufactured flexible wing model

Fernandes,

Hu,

Wang

et al. 2023

RPJ

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Purpose This paper aims to assess the feasibility of additively manufactured wind tunnel models. The additively manufactured model was used to validate a computational framework allowing the evaluation of the performance of five wing models. Design/methodology/approach An optimized fighter wing was additively manufactured and tested in a low-speed wind tunnel to obtain the aerodynamic coefficients and deflections at different speeds and angles of attack. The flexible wing model with optimized curvilinear spars and ribs was used to validate a finite element framework that was used to study the aeroelastic performance of five wing models. As a computationally efficient optimization method, homogenization-based topology optimization was used to generate four different lattice internal structures for the wing in this study. The efficiency of the spline-based optimization used for the spar-rib model and the lattice-based optimization used for the other four wings were compared. Findings The aerodynamic loads and displacements obtained experimentally and computationally were in good agreement, proving that additive manufacture can be used to create complex accurate models. The study also shows the efficiency of the homogenization-based topology optimization framework in generating designs with superior stiffness. Originality/value To the best of the authors’ knowledge, this is the first time a wing model with curvilinear spars and ribs was additively manufactured as a single piece and tested in a wind tunnel. This research also demonstrates the efficiency of homogenization-based topology optimization in generating enhanced models of different complexity.

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Geometrically nonlinear aeroelastic characteristics of highly flexible wing fabricated by additive manufacturing

Cited by 19 publications

References 21 publications

The State of the Art of Information Integration in Space Applications

The State of the Art of Information Integration in Space Applications

Eriyik yığma modelleme ile üretilen PET-G parçaların katman yüksekliğine ve test sıcaklığına bağlı darbe davranışı

Analysis of additively manufactured flexible wing model

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