Dynamics
of Origami

Explore wave propagation
in origami-based structures.

Reconfigurable
structures

Study reconfigurable/deployable structures

About
Me

Education

Hiromi Yasuda (安田博実)

Postdoctral researcher

at University of Pennsylvania (1/2019-Present)

(Adviser: Professor Jordan R. Raney)

  • Email: hyasuda@seas.upenn.edu
  • Gitlab: @hiromiyasuda
  • Google Scholar: Link
  • YouTube: Link
  • Educational/Employment
    History

    Postdoctral researcher (4/2018-12/2018)

    University of Washington, Seattle, WA

    (Adviser: Professor Jinkyu Yang)


    Ph.D., Aeronautics & Astronautics (3/2018)

    University of Washington, Seattle, WA

    Dissertation: Wave dynamics in origami-based mechanical metamaterials

    (Adviser: Professor Jinkyu Yang)


    M.S., Mechanical Engineering (6/2014)

    University of Washington, Seattle, WA


    B.S., Aerospace Engineering (3/2011)

    Nihon University, College of Science and Technology, Chiba, Japan




    My YouTube videos


    Media coverage

    Recent
    Projects

    My research topics including origami, reconfigurable/deployable mechanisms
    cellular structures with tunable mechanical properties, nonlinear wave propagation, etc.

    Schematic illustration of origami-based mechanical metamaterials

    Wave propagation in origami

    I study linear/nonlinear wave propagation in origami-based structures. For example, a 1D chain composed of triangulated cylindrical origami unit cells can exhibit unique wave propagation under compressive impact, specifically rarefaction solitary waves. In this system, the leading compressive wave propagates slower than the rarefaction solitary wave. Although compressive impact is applied to the chain, the first wave we observe at the other end of the system is tensile waves. Also, since each component of this chain has 2 degree-of-freedom, the system can show interesting coupling behavior.


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    Experimental demonstration of rarefaction solitary waves in origami (Read paper)

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    Strain wave propagation (Read paper)

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    Selecting a specific wave mode (Read paper)



    Origami-based cellular structures

    Design and analyze origami-based cellular structures with tunable mechanical properties. Tachi-Miura polyhedron (TMP)-based tessellation is shown in (Right). This structure can exhibit unique tunable properties, such as negative Poisson's ratio (Lower left), in-situ loading bearing capability (Lower center). These features can be useful for engineering applications (e.g., deployable bridge for diaster relief (Lower right)).


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    Linear/Nonlinear wave propagation in mechanical systems

    Study linear/nonlinear wave propagation

    (Under construction)


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    Multi-stable structures

    Explore multi-stable behaviors of mechanical systems.

    (Under construction)




    Schematic illustration of the quasi-recurrent neural network (QRNN)

    Machine learning approach to predict and analyze origami dynamics


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    Conceptual illustration of operation on the measurement data for training and testing the quasi-recurrent neural network

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    Visualization of the hidden states of the QRNN (Read paper)

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    Comparison between the measurement and prediction of the chaotic origami behavior

    Journal/Conference proceedings
    Publications

    Journal paper / Conference proceedings / Movies / Media
    (see also Google scholar)

    • 17. Heterogeneous Origami Architected Materials with Variable Stiffness

      Y. Miyazawa, H. Yasuda, H. Kim, J. H. Lynch, K. Tsujikawa, T. Kunimine, J. R. Raney, and J. Yang

      (submitted)

      The first two authors (Y.M. and H.Y.) contributed equally to this work
    • 16. Leaf-like Origami with Bistability for Self-Adaptive Grasping Motions

      H. Yasuda, K. Johnson, V. Arroyos, K. Yamaguchi, J. R Raney, and J. Yang

      (submitted)

      arXiv preprint arXiv:2011.01428

      The first two authors (H.Y. and K.J.) contributed equally to this work
    • 15. Data-driven prediction and analysis of chaotic origami dynamics

      H. Yasuda, K. Yamaguchi, Y. Miyazawa, R. Wiebe, J. R. Raney, and J. Yang

      Communications Physics 3, 168, 2020.

      Movie: Experimental demonstration of chaotic behavior, Data-driven prediction

    • 14. Transition waves and domain wall formation in multistable mechanical metamaterials

      H. Yasuda, L. M. Korpas, and J. R. Raney

      Physical Review Applied 13 (5), 054067, 2020.

      The first two authors (H.Y. and L.M.K.) contributed equally to this work

      Movie: Multistability, Single transition wave, Collision of transition waves, Tensile test on a chain with SDW

    • 13. Origami-based deployable structures made of carbon fiber reinforced polymer composites

      A. A. Deleo, J. O’Neil, H. Yasuda, M. Salviato, and J. Yang

      Composites Science and Technology, 191, 108060, 2020.


    • 12. Origami‐Based Cellular Structures with In Situ Transition between Collapsible and Load‐Bearing Configurations

      H. Yasuda, B. Gopalarethinam, T. Kunimine, T. Tachi, and J. Yang

      Advanced Engineering Materials, 21, 1900562, 2019


      Highlighted in Advanced Science News
      Featured on the cover page

      Movie: Load bearing capability, TMP with self-folding creases, Multi-TMP cellular structure.

    • 11. Origami-based impact mitigation by rarefaction wave creation

      H. Yasuda, Y. Miyazawa, C. Chong, E. G. Charalampidis, P. G. Kevrekidis, and J. Yang

      Science advances, 5(5), eaau2835, 2019.

      Media coverage: Reuters, UW NEWS, ScienceDaily, Geekwire, fastcompany, Cosmos Magazine, Phys.org, ...

      Movie: Experimental demonstration, 3D reconstruction of the measurement.

    • 10. Kirigami-based elastic metamaterial with anisotropic mass density for subwavelength wave control

      R. Zhu, H. Yasuda, G. Huang, and J. Yang

      Scientific Reports, 8: 483, 2018.

    • 9. Dial-in topological metamaterials based on bistable Stewart platform

      Y. Wu, R. Chaunsali, H. Yasuda, K. Yu, and J. Yang

      Scientific Reports, 8: 112, 2018.


    • 8. Tunable frequency band structure of origami-based mechanical metamaterials

      H. Yasuda, and J. Yang

      Journal of International Association for Shell and Spatial Structures, 58(4): 287, 2017. (invited)

      Hangai Award Paper from IASS
    • 7. Origami-based tunable truss structures for non-volatile mechanical memory operation

      H. Yasuda, T. Tachi, M. Lee, and J. Yang

      Nature Communications, 8: 962, 2017.

      Movie: Tailorable stability

    • 6. Emergence of dispersive shocks and rarefaction waves in power-law contact models

      H. Yasuda, C. Chong, J. Yang, and P.G. Kevrekidis

      Physical Review E, 95: 062216, 2017.


    • 5. Scattering of waves by impurities in precompressed granular chains

      A. Martinez, H. Yasuda, E. Kim, P. G. Kevrekidis, M. Porter, and J. Yang

      Physical Review E, 93: 052224, 2016.

      The first two authors (A.J.M. and H.Y.) contributed equally to this work

    • 4. Formation of rarefaction waves in origami-based metamaterials

      H. Yasuda, C. Chong, E.G. Charalampidis, P.G. Kevrekidis, and J. Yang

      Physical Review E, 93: 043004, 2016.



    • 3. Multi-transformable leaf-out origami with bistable behavior

      H. Yasuda, Z. Chen, and J. Yang

      ASME Journal of Mechanisms and Robotics – Special Issue, 8(3):031013, 2016


      Movie: Folding motion of the leaf-out origami, 3 different configuraitons

    • 2. Origami-based metamaterials for tunable Poisson's ratio and bistability

      H. Yasuda, and J. Yang

      Physical Review Letters, 114: 185502, 2015.

      Editor's Suggestion Paper

      Movie: Folding motion of TMP unit cells, Folding motion of multi-TMP structures

    • 1. Folding behaviour of Tachi-Miura polyhedron bellows

      H. Yasuda, T. Yein, T. Tachi, K. Miura, and M. Taya

      Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 469(2159), 20130351.


    • Wave Dynamics in Reconfigurable Tristable Mechanical Metamaterials

      H. Yasuda, L. M Korpas, and J. R Raney

      ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference


    • Tunable frequency band structure of origami-based mechanical metamaterials

      H. Yasuda and J. Yang

      Proceedings of theInternational Association for Shell and Spatial Structures (IASS) Symposium 2017

      Hangai Award Paper from IASS

    • Folding behavior of origami-based mechanical metamaterials

      H. Yasuda, M. Lee, and J. Yang

      Proceedings of theInternational Association for Shell and Spatial Structures (IASS) Symposium 2016


    • Tunable Wave Dynamics in Origami-Based Mechanical Metamaterials

      H. Yasuda, M. Lee, and J. Yang

      ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference

    • Rarefaction Wave Propagation in Origami-Based Mechanical Metamaterials

      H. Yasuda and J. Yang

      ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference

    • Advanced Science News

      Origami-Based Cellular Structures: Unfolding Paper-Based Prototypes

      November 18, 2019

    • Reuters

      Ancient origami inspires new rocket leg design

      July 16, 2019

    • fabcross

      衝撃力を緩和する折り紙構造のショックアブソーバー——宇宙船の着陸脚やドローンへの応用も

      June 25, 2019

    • Space.com

      Fold This! Origami-Inspired Material Could Soften Spacecraft Landings

      May 30, 2019

    • 財経新聞

      折り紙が可能にする、宇宙船再利用の仕組み 米大学の研究

      May 29, 2019

    • Axis

      宇宙ロケットを安全に着陸させる方法を考案 - ヒントになったのは「折り紙」の構造

      May 28, 2019

    • Cosmos Magazine

      Researchers turn to origami and Lego to build a better spacecraft

      May 27, 2019

    • Innovation Toronto

      Origami-inspired metamaterial softens impact forces for potential use in spacecraft, cars and beyond

      May 26, 2019

    • Interesting Engineering

      Researchers Look to Origami-Inspired Structures to Help Reusable Spacecrafts Stick the Landing

      May 26, 2019

    • MSN

      Origami May Soon Allow Softer Landings for SpaceX Rockets and Softer Impacts for NFL Players

      May 24, 2019

    • Fast Company

      This magical metamaterial could revolutionize car safety and save lives

      May 24, 2019

    • ScienceDaily

      Origami-inspired materials could soften the blow for reusable spacecraft

      May 24, 2019

    • GeekWire

      Researchers use the ancient art of origami to produce high-tech shock absorbers

      May 24, 2019

    • Astronomy

      Origami-inspired design may soon help cushion rocket landings

      May 24, 2019

    • Phys.org

      Origami-inspired materials could soften the blow for reusable spacecraft

      May 24, 2019

    • UW NEWS

      Origami-inspired materials could soften the blow for reusable spacecraft

      May 24, 2019

    • University of Washington

      Seattle, WA

      January, 2020

    • My hometown, Yokohama!

      みなとみらい

      October, 2016

    Research
    Tools

    Program codes and software
    used to conduct analytical/numerical/experimental analysis.

    Contact
    Information

    Email: hyasuda@seas.upenn.edu
    Google scholar: Link