Isogeometric Analysis of Lattice Structures Having Compression-Twist Coupled Deformation

Journal of the Computational Structural Engineering Institute of Korea, vol. 34, pp. 287–292

Abstract

We utilized the isogeometric analysis (IGA) method that uses NURBS basis functions in CAD systems, to account for the geometric exactness of a geometrically exact beam deformation, on a new type of metamaterial, twist-translation coupled structure showing a large twist angle.A two-dimensional unit cell structure was embedded in a cylindrical wall, using free-form deformation and an appropriate interpolation scheme.A parametric study on the effects of the dimensions of the cylinder and the number of cells, on the twisting angle was performed.Furthermore, the mechanism of the twist-translation coupled metamaterial was explored through numerical examples.

Authors 5

1. Se-Hyeon Kang

   Seoul National University

   Affiliation as printed

   Ph.D. Candidates, Department of Naval Architecture and Ocean Engineering, Seoul National University, Seoul, 08826, Korea

   Computational Structural Engineering Institute of Korea

   Department of Naval Architecture and Ocean Engineering, Seoul National University, Seoul, 08826, Korea

2. Myung-Jin Choi Aachen Postdoctoral Researcher

   RWTH Aachen University

   Affiliation as printed

   Postdoctoral Researcher , Rheinisch-Westfälische Technische Hochschule Aachen University , Aachen , Germany

   Postdoctoral Researcher, Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen, Germany

3. Myung-Hoon Oh Aachen Postdoctoral Researcher

   Seoul National University · RWTH Aachen University

   Affiliation as printed

   . Candidates, Department of Naval Architecture and Ocean Engineering , Seoul National University , Seoul , 08826 , Korea

   Postdoctoral Researcher, Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen, Germany

   Professor, Department of Naval Architecture and Ocean Engineering, Seoul National University, Seoul, 08826, Korea

   Computational Structural Engineering Institute of Korea

   Department of Naval Architecture and Ocean Engineering, Seoul National University, Seoul, 08826, Korea

4. Minho Yoon

   Kumoh National Institute of Technology

   Affiliation as printed

   Assistant Professor, Department of Mechanical Engineering, Kumoh National Institute of Technology, Gumi, 39177, Korea

5. Seonho Cho corresponding

   Seoul National University

   Affiliation as printed

   Professor, Department of Naval Architecture and Ocean Engineering , Seoul National University , Seoul , 08826 , Korea

   Professor, Department of Naval Architecture and Ocean Engineering, Seoul National University, Seoul, 08826, Korea