Influence of anisotropy on the expansion performance of auxetic skin meshing geometries: a finite element study
Masoumeh Razaghi Pey Ghaleh Denis O'Mahoney Kevin Moerman
作者信息
Abstract
This study investigates the combined effects of anisotropy and auxetic mesh geometry on the performance of skin graft expansion. Finite element models of auxetic slit-based geometries were developed and subjected to 25 percent tensile strain. Skin was modelled using an anisotropic constitutive formulation. Langer's line orientations were varied relative to the load direction. Results showed anisotropy strongly influenced expansion behaviour. The effect was observed to be complex and highly dependent on mesh type. Anisotropy was observed to enhance or inhibit the auxetic expansion behaviour. In all mesh types studied, the expansion performance is lowest when Langer's lines align with the transverse direction. Greatest expansion was typically observed when Langer's lines were close to the loading direction. Isotropic models overpredicted stress relative to the anisotropic models. These findings support the use of auxetic structures for skin mesh expansion applications and show that anisotropy is an important factor in both deformation and stress prediction.引用本文复制引用
Masoumeh Razaghi Pey Ghaleh,Denis O'Mahoney,Kevin Moerman.Influence of anisotropy on the expansion performance of auxetic skin meshing geometries: a finite element study[EB/OL].(2026-06-03)[2026-06-07].https://arxiv.org/abs/2606.04893.学科分类
医学研究方法/皮肤病学、性病学
