竹澤 晃弘

研究成果

年別の研究成果 2003 2014 2018 2019 2020 2021 2022 2023

• 79 Article
• 10 Conference contribution
• 3 Review article
• 2 Paper

年別の研究成果

年別の研究成果

検索結果

• 2023

  Multiscale topology optimization of biodegradable metal matrix composite structures for additive manufacturing

  Zhang, H., Ding, X., Guo, H., Xu, S., Li, H., Nishiwaki, S., Chen, Y. & Takezawa, A., 2023 2月, In: Applied Mathematical Modelling. 114, p. 799-822 24 p.

  研究成果: Article › 査読

  • Metal Matrix Composites 100%
  • Composite Structures 85%
  • Topology Optimization 80%
  • Manufacturing 64%
  • Shape optimization 61%
  1 被引用数 (Scopus)

• Numerical and experimental analysis in the energy dissipation of additively-manufactured particle dampers based on complex power method

  Guo, H., Ichikawa, K., Sakai, H., Zhang, H. & Takezawa, A., 2023, (Accepted/In press) In: Computational Particle Mechanics.

  研究成果: Article › 査読

  • Experimental Analysis 100%
  • Damper 96%
  • Power Method 94%
  • Energy Dissipation 89%
  • Dissipation 75%

• Programmable and multistable metamaterials made of precisely tailored bistable cells

  Liang, K., Wang, Y., Luo, Y., Takezawa, A., Zhang, X. & Kang, Z., 2023 3月, In: Materials and Design. 227, 111810.

  研究成果: Article › 査読

  Open Access

  • Metamaterials 100%
  • Force 57%
  • Additive 56%
  • Simulation 53%
  • Shape optimization 17%
• 2022

  Design optimization of functionally graded lattice infill total hip arthroplasty stem for stress shielding reduction

  Nomura, J., Takezawa, A., Zhang, H. & Kitamura, M., 2022 4月, In: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine. 236, 4, p. 515-525 11 p.

  研究成果: Article › 査読

  • Arthroplasty 100%
  • Shielding 72%
  • Homogenization method 32%
  • Stiffness 32%
  • Physical properties 20%
  3 被引用数 (Scopus)

• Numerical and experimental analysis of additively manufactured particle dampers at low frequencies

  Guo, H., Ichikawa, K., Sakai, H., Zhang, H., Zhang, X., Tsuruta, K., Makihara, K. & Takezawa, A., 2022 1月, In: Powder Technology. 396, p. 696-709 14 p.

  研究成果: Article › 査読

  Open Access

  • Numerical analysis 100%
  • Damping 88%
  • Simulation 73%
  • Powders 56%
  • Additive 38%
  3 被引用数 (Scopus)

• Robust topology optimization of biodegradable composite structures under uncertain degradation rates

  Zhang, H., Takezawa, A., Ding, X., Zhang, X., Xu, S., Li, H., Nozawa, S. & Nishiwaki, S., 2022 7月 1, In: Composite Structures. 291, 115593.

  研究成果: Article › 査読

  • Shape optimization 100%
  • Composite structures 96%
  • Degradation Rate 91%
  • Degradation 65%
  • Implant 62%
  1 被引用数 (Scopus)

• Simultaneous optimization of hatching orientations and lattice density distribution for residual warpage reduction in laser powder bed fusion considering layerwise residual stress stacking

  Takezawa, A., Guo, H., Kobayashi, R., Chen, Q. & To, A. C., 2022 12月, In: Additive Manufacturing. 60, 103194.

  研究成果: Article › 査読

  Open Access

  • Residual Stress 100%
  • 3D printers 74%
  • Residual stresses 65%
  • Powders 60%
  • Fusion reactions 60%
  1 被引用数 (Scopus)

• Topology optimization for realizing tailored self-collimation in phononic crystals

  Jia, Z., Luo, Y., Takezawa, A. & Zhang, X., 2022 9月 30, In: International Journal for Numerical Methods in Engineering. 123, 18, p. 4170-4182 13 p.

  研究成果: Article › 査読

  • Topology Optimization 100%
  • Shape optimization 75%
  • Crystal 74%
  • Crystals 70%
  • Angle 30%
  1 被引用数 (Scopus)

• 傾 斜 機 能 ラ 亍 イ ス 構 造 に よ る 構 造 体 表 面 の 接 触 反 力 最 適 化

  Yanagihara, K., Ueno, A. & Takezawa, A., 2022, In: Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering. 88, 4, p. 352-358 7 p.

  研究成果: Article › 査読

  Open Access

  • Surface reactions 100%
  • Stiffness 48%
  • Homogenization method 24%
  • Forging 18%
  • 3D printers 17%
• 2021

  Bi-material microstructural design of biodegradable composites using topology optimization

  Zhang, H., Takezawa, A., Ding, X., Xu, S., Duan, P., Li, H. & Guo, H., 2021 11月 1, In: Materials and Design. 209, 109973.

  研究成果: Article › 査読

  Open Access

  • Material Degradation Process 100%
  • Shape optimization 69%
  • Composite materials 38%
  • Degradation 34%
  • Composite Material 32%
  3 被引用数 (Scopus)

• Island scanning pattern optimization for residual deformation mitigation in laser powder bed fusion via sequential inherent strain method and sensitivity analysis

  Chen, Q., Taylor, H., Takezawa, A., Liang, X., Jimenez, X., Wicker, R. & To, A. C., 2021 10月, In: Additive Manufacturing. 46, 102116.

  研究成果: Article › 査読

  • Rod Like Crystal 100%
  • Cooling 94%
  • Sensitivity analysis 94%
  • Heat Treatment 90%
  • Powders 86%
  23 被引用数 (Scopus)

• Lemperature distribution design of functionally graded structure based on lattice volume fraction distribution optimization and metal additive manufacturing

  Ueno, A., Guo, H., Moritoyo, R., Takezawa, A. & Kitamura, M., 2021, In: Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering. 87, 10, p. 827-833 7 p.

  研究成果: Article › 査読

  Open Access

  • 3D printers 100%
  • Volume fraction 91%
  • Metals 64%
  • Thermal conductivity 34%
  • Homogenization method 17%

• Mechanical behavior of in-situ alloyed Ti6Al4V(ELI)-3 at.% Cu lattice structures manufactured by laser powder bed fusion and designed for implant applications

  Vilardell, A. M., Takezawa, A., du Plessis, A., Takata, N., Krakhmalev, P., Kobashi, M., Albu, M., Kothleitner, G., Yadroitsava, I. & Yadroitsev, I., 2021 1月, In: Journal of the Mechanical Behavior of Biomedical Materials. 113, 104130.

  研究成果: Article › 査読

  Open Access

  • Alloying 100%
  • Crystal System 98%
  • Implant 85%
  • Powders 70%
  • Fusion reactions 69%
  14 被引用数 (Scopus)

• Optimally variable density lattice to reduce warping thermal distortion of laser powder bed fusion

  Takezawa, A., Chen, Q. & To, A. C., 2021 12月, In: Additive Manufacturing. 48, 102422.

  研究成果: Article › 査読

  Open Access

  • Clearance 100%
  • Powders 74%
  • Fusion reactions 73%
  • Lasers 69%
  • Volume fraction 55%
  5 被引用数 (Scopus)

• Study on optimal design of a folding-type hatch cover considering material selection

  Putra, G. L., Kitamura, M. & Takezawa, A., 2021, In: Journal of Ship Production and Design. 37, 4, p. 237-247 11 p.

  研究成果: Article › 査読

  • Hatch covers 100%
  • Shipyards 18%
  • Costs 16%
  • Industry 12%
  • Genetic algorithms 10%

• Temperature distribution design based on variable lattice density optimization and metal additive manufacturing

  Ueno, A., Guo, H., Takezawa, A., Moritoyo, R. & Kitamura, M., 2021 7月, In: Symmetry. 13, 7, 1194.

  研究成果: Article › 査読

  Open Access

  • Temperature Distribution 100%
  • Metals 89%
  • Manufacturing 88%
  • 3D printers 78%
  • Topological Optimization 77%
  6 被引用数 (Scopus)

• Topology optimization of composite macrostructures comprising multi-phase viscoelastic composite microstructures for enhanced structural damping

  Zhang, H., Takezawa, A., Ding, X., Guo, H., Ni, W. & Zhang, X., 2021 12月 15, In: Composite Structures. 278, 114712.

  研究成果: Article › 査読

  • Shape optimization 100%
  • Damping 71%
  • Microstructure 63%
  • Composite materials 54%
  • Composite Material 47%
  3 被引用数 (Scopus)

• Topology optimization of degradable composite structures with time-changeable stiffness

  Zhang, H., Takezawa, A., Ding, X., Xu, S., Li, H. & Guo, H., 2021 9月 15, In: International Journal for Numerical Methods in Engineering. 122, 17, p. 4751-4773 23 p.

  研究成果: Article › 査読

  • Composite Structures 100%
  • Topology Optimization 94%
  • Degradation 82%
  • Stiffness 74%
  • Shape optimization 71%
  2 被引用数 (Scopus)
• 2020

  Finite element simulation of the compressive response of additively manufactured lattice structures with large diameters

  Guo, H., Takezawa, A., Honda, M., Kawamura, C. & Kitamura, M., 2020 4月 1, In: Computational Materials Science. 175, 109610.

  研究成果: Article › 査読

  • Finite Element Simulation 100%
  • Lattice Structure 82%
  • Crystal System 77%
  • Cubic Space Group 55%
  • Simulation 42%
  39 被引用数 (Scopus)

• Method to systemically order welding sequence to efficiently mitigate welding displacement of a general ship grillage structure

  Woo, D., Kitamura, M. & Takezawa, A., 2020 8月 8, In: Ships and Offshore Structures. 15, 7, p. 753-768 16 p.

  研究成果: Article › 査読

  • Ships 100%
  • Welding 98%
  • Offshore structures 57%
  • Computer simulation 26%
  • Steel structures 26%
  5 被引用数 (Scopus)

• Sensitivity analysis and lattice density optimization for sequential inherent strain method used in additive manufacturing process

  Takezawa, A., To, A. C., Chen, Q., Liang, X., Dugast, F., Zhang, X. & Kitamura, M., 2020 10月 1, In: Computer Methods in Applied Mechanics and Engineering. 370, 113231.

  研究成果: Article › 査読

  Open Access

  • sensitivity analysis 100%
  • Manufacturing 93%
  • Sensitivity Analysis 86%
  • 3D printers 82%
  • Sensitivity analysis 73%
  29 被引用数 (Scopus)

• Systematic method for positioning clamps and strongbacks based on their influence on welding displacements

  Woo, D., Kitamura, M. & Takezawa, A., 2020 4月 15, In: Ocean Engineering. 202, 107084.

  研究成果: Article › 査読

  • Clamping devices 100%
  • welding 98%
  • positioning 82%
  • Displacement 72%
  • Welding 71%
  8 被引用数 (Scopus)

• Topology optimisation of a porous unit cell in a fluid flow considering Forchheimer drag

  Takezawa, A., Zhang, X., Tanaka, T. & Kitamura, M., 2020 1月 2, In: International Journal of Computational Fluid Dynamics. 34, 1, p. 50-60 11 p.

  研究成果: Article › 査読

  • Topology Optimization 100%
  • Drag 88%
  • Shape optimization 75%
  • Fluid Flow 69%
  • fluid flow 68%
  3 被引用数 (Scopus)

• アディティブマニュファクチャリングによる最適化構造の創製

  Takezawa, A., 2020 6月 5, In: Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering. 86, 6, p. 405-408 4 p.

  研究成果: Article › 査読
• 2019

  An objective function for the topology optimization of sound-absorbing materials

  Takezawa, A., Yamamoto, T., Zhang, X., Yamakawa, K., Nakano, S. & Kitamura, M., 2019 3月 17, In: Journal of Sound and Vibration. 443, p. 804-819 16 p.

  研究成果: Article › 査読

  • Shape optimization 100%
  • topology 82%
  • Acoustic waves 74%
  • optimization 62%
  • acoustics 54%
  12 被引用数 (Scopus)

• A phase-field based robust topology optimization method for phononic crystals design considering uncertain diffuse regions

  Zhang, X., Takezawa, A. & Kang, Z., 2019 4月 1, In: Computational Materials Science. 160, p. 159-172 14 p.

  研究成果: Article › 査読

  • Band Gap 100%
  • Topology Optimization 88%
  • Phase Field 86%
  • Robust Optimization 84%
  • Energy gap 71%
  22 被引用数 (Scopus)

• Method to optimize an additively-manufactured functionally-graded lattice structure for effective liquid cooling

  Takezawa, A., Zhang, X., Kato, M. & Kitamura, M., 2019 8月, In: Additive Manufacturing. 28, p. 285-298 14 p.

  研究成果: Article › 査読

  • Crystal System 100%
  • Cooling 77%
  • Liquids 58%
  • Coolant 58%
  • Flow 56%
  39 被引用数 (Scopus)

• Numerical study on the effective stiffness of topology-optimized lattice structures made of orthotropic crystal grains with optimal orientation

  Takezawa, A., Zhang, X. & Koizumi, Y., 2019 3月, In: Computational Materials Science. 159, p. 202-209 8 p.

  研究成果: Article › 査読

  • Crystal lattices 100%
  • Crystal orientation 90%
  • Lattice Structure 79%
  • Crystal System 74%
  • Stiffness 71%
  4 被引用数 (Scopus)

• Optimization of an additively manufactured functionally graded lattice structure with liquid cooling considering structural performances

  Takezawa, A., Zhang, X. & Kitamura, M., 2019 11月, In: International Journal of Heat and Mass Transfer. 143, 118564.

  研究成果: Article › 査読

  • liquid cooling 100%
  • Crystal System 90%
  • Cooling 70%
  • Liquids 53%
  • optimization 52%
  23 被引用数 (Scopus)

• Reliability-guided Rayleigh backscattering spectrum correlation method for distributed strain measurements in optical fibres

  Suo, L., Lei, Z., Takezawa, A. & Wu, Z., 2019 3月 12, In: Journal of Modern Optics. 66, 5, p. 512-520 9 p.

  研究成果: Article › 査読

  • strain measurement 100%
  • backscattering 76%
  • optical fibers 64%
  • cross correlation 34%
  • shift 20%
  2 被引用数 (Scopus)

• Robust topology optimization of vibrating structures considering random diffuse regions via a phase-field method

  Zhang, X., Takezawa, A. & Kang, Z., 2019 2月 1, In: Computer Methods in Applied Mechanics and Engineering. 344, p. 766-797 32 p.

  研究成果: Article › 査読

  • Topology Optimization 100%
  • Structural Dynamics 99%
  • Phase Field 97%
  • Random Structure 96%
  • Robust Optimization 95%
  19 被引用数 (Scopus)

• Structural optimization of stiffener layout for stiffened plate using hybrid GA

  Putra, G. L., Kitamura, M. & Takezawa, A., 2019 7月, In: International Journal of Naval Architecture and Ocean Engineering. 11, 2, p. 809-818 10 p.

  研究成果: Article › 査読

  Open Access

  • Structural optimization 100%
  • Genetic algorithms 61%
  • Ships 35%
  • Shipyards 27%
  • Industry 9%
  19 被引用数 (Scopus)

• Study on sliding-window length based on Rayleigh backscattering spectrum correlation in distributed optical-fiber strain measurement

  Suo, L., Lei, Z., Zhao, S., Wu, Z. & Takezawa, A., 2019 1月, In: Optical Fiber Technology. 47, p. 126-132 7 p.

  研究成果: Article › 査読

  • Backscattering 100%
  • Strain measurement 85%
  • strain measurement 81%
  • Optical fibers 73%
  • sliding 66%
  5 被引用数 (Scopus)

• Topology optimization and characterization of Ti6Al4V ELI cellular lattice structures by laser powder bed fusion for biomedical applications

  Vilardell, A. M., Takezawa, A., du Plessis, A., Takata, N., Krakhmalev, P., Kobashi, M., Yadroitsava, I. & Yadroitsev, I., 2019 10月 24, In: Materials Science and Engineering A. 766, 138330.

  研究成果: Article › 査読

  • Crystal System 100%
  • Shape optimization 92%
  • beds 83%
  • topology 76%
  • Powders 70%
  38 被引用数 (Scopus)

• Two-stage layout–size optimization method for prow stiffeners

  Liu, Z., Cho, S., Takezawa, A., Zhang, X. & Kitamura, M., 2019 1月, In: International Journal of Naval Architecture and Ocean Engineering. 11, 1, p. 44-51 8 p.

  研究成果: Article › 査読

  Open Access

  • Ships 100%
  • Conceptual design 50%
  • Shape optimization 25%
  • Costs 9%
  6 被引用数 (Scopus)
• 2018

  Design methodology of magnetic fields and structures for magneto-mechanical resonator based on topology optimization

  Takezawa, A., Lee, J. & Kitamura, M., 2018 3月 1, In: Optimization and Engineering. 19, 1, p. 19-38 20 p.

  研究成果: Article › 査読

  • Magnetic structure 100%
  • Resonator 90%
  • Topology Optimization 90%
  • Design Methodology 84%
  • Shape optimization 68%
  2 被引用数 (Scopus)

• Inverse analysis of giant macroscopic negative thermal expansion of Ca₂RuO_4%y ceramics based on elasticity and structural topology optimization

  Takezawa, A., Takenaka, K. & Zhang, X., 2018 5月, In: Applied Physics Express. 11, 5, 055801.

  研究成果: Article › 査読

  • Negative thermal expansion 100%
  • Structural optimization 61%
  • Shape optimization 57%
  • Elasticity 50%
  • topology 47%
  12 被引用数 (Scopus)

• Isotropic Ti–6Al–4V lattice via topology optimization and electron-beam melting

  Takezawa, A., Yonekura, K., Koizumi, Y., Zhang, X. & Kitamura, M., 2018 8月, In: Additive Manufacturing. 22, p. 634-642 9 p.

  研究成果: Article › 査読

  Open Access

  • Electron Beam Melting 100%
  • Electron beam melting 88%
  • Shape optimization 62%
  • Crystal System 40%
  • Powders 37%
  38 被引用数 (Scopus)

• Robust topology optimization of phononic crystals with random field uncertainty

  Zhang, X., He, J., Takezawa, A. & Kang, Z., 2018 8月 31, In: International Journal for Numerical Methods in Engineering. 115, 9, p. 1154-1173 20 p.

  研究成果: Article › 査読

  • Band Gap 100%
  • Topology Optimization 88%
  • Robust Optimization 84%
  • Energy gap 71%
  • Shape optimization 67%
  47 被引用数 (Scopus)

• Topology optimization of piezoelectric smart structures for minimum energy consumption under active control

  Zhang, X., Takezawa, A. & Kang, Z., 2018 7月 1, In: Structural and Multidisciplinary Optimization. 58, 1, p. 185-199 15 p.

  研究成果: Article › 査読

  • Smart Structures 100%
  • Energy Consumption 84%
  • Active Control 78%
  • Topology Optimization 77%
  • Piezoelectric 71%
  25 被引用数 (Scopus)
• 2017

  Design methodology for porous composites with tunable thermal expansion produced by multi-material topology optimization and additive manufacturing

  Takezawa, A. & Kobashi, M., 2017 12月 15, In: Composites Part B: Engineering. 131, p. 21-29 9 p.

  研究成果: Article › 査読

  • Thermal Expansion 100%
  • Shape optimization 99%
  • Thermal expansion 95%
  • 3D printers 92%
  • Negative thermal expansion 87%
  98 被引用数 (Scopus)

• Eigenfrequecy-based damage identification method for non-destructive testing based on topology optimization

  Nishizu, T., Takezawa, A. & Kitamura, M., 2017 3月 4, In: Engineering Optimization. 49, 3, p. 417-433 17 p.

  研究成果: Article › 査読

  • Damage Identification 100%
  • Nondestructive Testing 73%
  • Topology Optimization 68%
  • Topology 55%
  • Shape optimization 52%
  7 被引用数 (Scopus)

• High-stiffness and strength porous maraging steel via topology optimization and selective laser melting

  Takezawa, A., Koizumi, Y. & Kobashi, M., 2017 12月 1, In: Additive Manufacturing. 18, p. 194-202 9 p.

  研究成果: Article › 査読

  • Maraging steel 100%
  • Selective laser melting 88%
  • Pore structure 87%
  • Shape optimization 74%
  • Melting 60%
  42 被引用数 (Scopus)

• Porous metal produced by selective laser melting with effective isotropic thermal conductivity close to the Hashin–Shtrikman bound

  Takezawa, A., Kobashi, M., Koizumi, Y. & Kitamura, M., 2017 2月 1, In: International Journal of Heat and Mass Transfer. 105, p. 564-572 9 p.

  研究成果: Article › 査読

  Open Access

  • Selective laser melting 100%
  • Thermal Conductivity 75%
  • Thermal conductivity 71%
  • Melting 68%
  • 3D printers 62%
  37 被引用数 (Scopus)
• 2016

  Cellular lattices of biomedical Co-Cr-Mo-alloy fabricated by electron beam melting with the aid of shape optimization

  Koizumi, Y., Okazaki, A., Chiba, A., Kato, T. & Takezawa, A., 2016 10月 1, In: Additive Manufacturing. 12, p. 305-313 9 p.

  研究成果: Article › 査読

  • Electron Beam Melting 100%
  • Electron beam melting 88%
  • Shape optimization 62%
  • Shape 38%
  • Porosity 25%
  36 被引用数 (Scopus)

• Design methodology using topology optimization for anti-vibration reinforcement of generators in a ship's engine room

  Daifuku, M., Nishizu, T., Takezawa, A., Kitamura, M., Terashita, H. & Ohtsuki, Y., 2016 2月 1, In: Proceedings of the Institution of Mechanical Engineers Part M: Journal of Engineering for the Maritime Environment. 230, 1, p. 216-226 11 p.

  研究成果: Article › 査読

  • Shape optimization 100%
  • Ships 77%
  • Reinforcement 75%
  • Engines 60%
  • Finite element method 29%
  4 被引用数 (Scopus)

• Topology optimization of damping material for reducing resonance response based on complex dynamic compliance

  Takezawa, A., Daifuku, M., Nakano, Y., Nakagawa, K., Yamamoto, T. & Kitamura, M., 2016 3月 17, In: Journal of Sound and Vibration. 365, p. 230-243 14 p.

  研究成果: Article › 査読

  • Shape optimization 100%
  • Compliance 82%
  • topology 82%
  • damping 75%
  • Damping 71%
  45 被引用数 (Scopus)
• 2015

  Porous composite with negative thermal expansion obtained by photopolymer additive manufacturing

  Takezawa, A., Kobashi, M. & Kitamura, M., 2015 7月 1, In: APL Materials. 3, 7, 076103.

  研究成果: Article › 査読

  Open Access

  • Negative thermal expansion 100%
  • Photopolymers 83%
  • Thermal Expansion 57%
  • 3D printers 53%
  • Additive 36%
  53 被引用数 (Scopus)
• 2014

  Cross-sectional optimization of whispering-gallery mode sensor with high electric field intensity in the detection domain

  Takezawa, A., Haraguchi, M., Okamoto, T. & Kitamura, M., 2014, In: IEEE Journal on Selected Topics in Quantum Electronics. 20, 6, p. 381-390 10 p., 6810133.

  研究成果: Article › 査読

  • Whispering gallery modes 100%
  • whispering gallery modes 66%
  • Electric fields 52%
  • optimization 37%
  • sensors 34%
  5 被引用数 (Scopus)

• Design methodology of piezoelectric energy-harvesting skin using topology optimization

  Takezawa, A., Kitamura, M., Vatanabe, S. L. & Silva, E. C. N., 2014 2月, In: Structural and Multidisciplinary Optimization. 49, 2, p. 281-297 17 p.

  研究成果: Article › 査読

  • Energy Harvesting 100%
  • Topology Optimization 78%
  • Design Methodology 73%
  • Piezoelectric 72%
  • Skin 71%
  25 被引用数 (Scopus)