A finite swelling 3D beam model with axial and radial diffusion
2025/05/12
In our recent publication, we combine beam theory with diffusion and finite strain swelling. The model is useful for the numerically efficient simulation of new generations of 3D printed energy storage and conversion devices, such as Li-ion batteries and thermoelectric generators.
Congratulations to our doctoral researcher, Juan C. Alzate Cobo, on the publication of his first journal article in CMAME! with Oliver Weeger. We also thank Xiang-Long Peng and Bai-Xiang Xu for their contributions.
This work introduces a novel beam model that couples large volumetric swelling with transport phenomena. A key innovation lies in its incorporation of both axial and radial diffusion, enabling accurate simulation of heat and species transport within lattice structures. Built upon beam theory and implemented using isogeometric collocation, the model offers high numerical efficiency and serves as a basis for the simulation—and future optimization—of 3D architected energy storage and conversion devices, such as lithium-ion batteries and thermoelectric generators.
You can check out the Open Access paper at 10.1016/j.cma.2025.117983
