Abstract
The mechanical properties of the material are essential to identify the material behavior of the structure. Predicting four-directional braided composites’ mechanical properties based on accurate modeling is an essential issue among researchers. In this research, the principle of minimum energy loss-based mechanics of structure genome was used for the two-step homogenization of three-dimensional (3D) four-directional braided composites. In the first step homogenization, the micro-scale model’s effective mechanical properties were decided by considering fibers and matrix; in the second step homogenization, the final effective mechanical properties of the meso-scale model were obtained by considering yarns and matrix. TexGen python script was implemented for accurate modeling of 3D four-directional braided cells with jamming effects. The current process sustainability was validated for 3D four-directional braided polymer matrix composites (PMCs) material by available finite element analysis (FEA) and experimental literature. The method is further extended for 3D four-directional braided ceramic matrix composites (CMCs) to confirm its versatility for standard composites. A commercial FEA was also performed on the meso-scale braided cell to validate the two-step homogenization results. This research explored fast and more accurate modeling and analysis techniques for 3D four-directional braided composites.
Highlights
The three-dimensional (3D) braided composites are the important textile composite members
It was analyzed that the selection and building of repetitive unit cell models with exact observation and dimension calculations are necessary for the multi-scale modeling
Jamming action was considered for meso-scale modeling to keep the braiding process in mind
Summary
The three-dimensional (3D) braided composites are the important textile composite members. Calculated effective homogenized properties of the meso-scale 3D four-dimensional braided PMCs (epoxy resin/T300 carbon fiber) model. The same meso-scale model (as shown in Figure 4b) was used for the meso-scale homogenization with yarn (from micro-scale CMCs homogenization) and matrix properties to get final effective mechanical properties for 3D four-directional braided CMCs. After two scale homogenization obtained mechanical properties are E11 = 213.522 GPa, E22 = 195.171 GPa, E33 = 277.613 GPa, G12 = 214.323 GPa, G13 = 283.321 GPa, G23 = 281.305 GPa, ν12 = 0.260, ν13 = 0.341, ν23 = 0.347. 2m020e,s4o, -1s7c9ale braided model’s geometry (Figure 4b) was imported in Ansys 2019 R102.of(i1i7) The same material properties were assigned for yarns (fiber bundles) and matrix (SiC), used in the current homogenization process. SSttrreessss iinn tthhee fifinniittee eelleemmeenntt mmooddeell ((aa)) ssttrreessss uunnddeerr ppuurree zz tteennssiioonn--ccoommppoossiittee mmooddeell,, mmaattrriixx aanndd yyaarrnnss ((fifibbeerr bbuunnddlleess));; ((bb)) ssttrreessss uunnddeerr ppuurree xx tteennssiioonn--ccoommppoossiittee mmooddeell,, mmaattrriixx aanndd yyaarrnnss ((fifibbeerr bbuunnddlleess));; aanndd ((cc)) ssttrreessss uunnddeerr ppuurree xxyysshheeaarr--ccoommppoossiitteemmooddeell,,mmaattrriixxaannddyyaarrnnss((fifibbeerrbbuunnddlleess))
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
