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This content will become publicly available on January 1, 2027

Title: Fictitious Magnetic Charge Model for Magneto-Mechanical Metamaterials
Abstract Magnetically actuated intelligent structures have shown great promise in various applications ranging from soft robotics to biomedical devices. One important type of structure involves embedding rigid magnets in polymer matrices, thanks to their simplicity in manufacturing and flexibility in structure design. However, accurately modeling their behavior remains challenging due to the strong nonlinear coupling between large deformation and spatially varying magnetic fields. To address this, we employ a fictitious magnetic charge method to transfer the magnetic forces and torques into surface traction under both uniform and nonuniform external magnetic actuation. We implement the proposed method in the commercial finite element software abaqus and validate it through a series of benchmark examples, which cover tuning the area of magneto-mechanical metamaterials, the shape changing of magnetic lattice structures, and the magnetic-field-driven buckling of cellular structures. Our approach enables accurate prediction of shape transformations in magnetically responsive structures, offering a practical tool for the design and optimization of future magneto-mechanical metamaterials and devices.  more » « less
Award ID(s):
1847149 2022421
PAR ID:
10702199
Author(s) / Creator(s):
; ;
Publisher / Repository:
ASME
Date Published:
Journal Name:
Journal of Applied Mechanics
Volume:
93
Issue:
1
ISSN:
0021-8936
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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