  Electro-thermally actuated origami provides a novel method for creating 3-D
systems with advanced morphing and functional capabilities. However, it is
currently difficult to simulate the multi-physical behavior of such systems
because the electro-thermal actuation and large folding deformations are highly
interdependent. In this work, we introduce a rapid multi-physics simulation
framework for electro-thermally actuated origami systems that can
simultaneously capture: thermo-mechancially coupled actuation, inter panel
contact, heat transfer, large deformation folding, and other complex loading
applied onto the origami. Comparisons with finite element models validate the
proposed framework for simulating origami heat transfer with different system
geometries, materials, and surrounding environments. Verification of the
simulated folding behaviors against physical electro-thermal micro-origami
further demonstrates the validity of the proposed model. Simulations of more
complex origami patterns and a case study for origami optimization are provided
as application examples to show the capability and efficiency of the model. The
framework provides a novel simulation tool for analysis, design, control, and
optimization of active origami systems, pushing the boundary for feasible shape
morphing and functional capability.
