Design and implementation of a textile meso-scale geometry modeling module within an open-source FEM platform (OPFEM)

Meso-scale geometric modeling of fibrous textiles is essential for multiscale analysis of fiber-reinforced composites, yet existing studies have paid limited attention to software architecture and extensibility. In this work, a textile meso-scale geometry modeling module is developed within the open-source finite element platform OPFEM, with a focus on modular and decoupled software design. The modeling workflow is organized into topology, path, cross-section, and geometry sublayers, coordinated through a document-centered mechanism to enable a coherent transition from weaving topology to three-dimensional yarn geometry. Representative textile models are constructed to verify the functionality of the module, which provides a scalable foundation for future extensions toward more complex textile architectures and integrated simulation workflows.