Prediction of elastic characteristics of spatially reinforced composite materials

13th International Conference on Textile Composites

Anoshkin, A.N.^1 ; Pisarev, P.V.^1 ; Ermakov, D.A.^1 ; Merzlyakova, N.A.^1

Department of Mechanics of Composite Materials and Constructions, Perm National Research Polytechnic University, Perm, Russia^1

关键词: Constructing models;    Elastic characteristic;    Geometric models;    Numerical predictions;    Self-intersections;    Sewing thread;    Spatial structure;    Spatially reinforced composite materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/406/1/012023/pdf
DOI  :  10.1088/1757-899X/406/1/012023

来源: IOP

【 摘 要 】

Numerical prediction of elastic characteristics of spatially reinforced composite materials (SRCM) with various reinforcement schemes is carried out in the work. Idealized SRCM structures constructed using TexGen, as well as parametrized geometric models constructed manually, are considered. It is revealed that, in spite of TexGen algorithms improved in recent times, it is impossible to achieve the required volume fraction of fibers corresponding to a real composite when constructing models of complex spatial structure of SRCM, and besides, self-intersection of weft and sewing threads often occurs. To eliminate the identified errors, idealized, parametrized geometric models in the language APDL were developed. In the framework of the developed geometric models, it was possible to realize a more dense arrangement of filaments in the frame, which allowed to maintain the percentage of the volume fraction of the reinforcing cage for the structures under consideration. The effective elastic characteristics of SRCM calculated using the developed numerical models and obtained as a result of mechanical tests were compared.