A methodology for modeling the relationship between process and topological yarn structure of 3D rotary braided rectangular preforms

Mei, Haiyang; Han, Zhenyu; Lu, Guangyu; Jin, Hongyu

doi:10.1016/j.compscitech.2018.09.022

Cited by 12 publications

(5 citation statements)

References 17 publications

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“…Compared to the structure of a rectangular rotating braid with two yarn segments intersecting vertically at each node, the hexagonal‐annular braid exhibits a different spatial internal grid structure. Observing the yarn topology from the macro‐scale perspective, it is evident that this structure differs from the determinantal and rectangular rotational braiding models in References 8, 10, 27. Assuming a constant yarn diameter, the yarn topology unit for the hexagonal‐annular braid can be initially determined from the yarn topology (Figure 7C–C′).…”

Section: Validation and Analysis Of Fabric Process Architecturementioning

confidence: 99%

“…24,25 Mei et al proposed a rectangular braiding and a 3D hexagonal braiding algorithm for different rotary braiding methods, respectively. 26,27 To realize the digitization of the braiding process by controlling the carrier trajectory, establishing an oblique coordinate system, and tracking the carrier path algorithm. Scholars have also conducted numerous research on fabric structures.…”

Section: Introductionmentioning

confidence: 99%

“…Gao and Li established a fabric structure model by determining the yarn position points in each step of the switchless controlled hexagonal rotary braiding process 24,25 . Mei et al proposed a rectangular braiding and a 3D hexagonal braiding algorithm for different rotary braiding methods, respectively 26,27 . To realize the digitization of the braiding process by controlling the carrier trajectory, establishing an oblique coordinate system, and tracking the carrier path algorithm.…”

Section: Introductionmentioning

confidence: 99%

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A matrix computing method for visualizing switchless controlled 3D hexagonal‐annular rotary braiding process architecture

Zhang

et al. 2023

Polymer Composites

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Numerous process architectures for fabric molding are investigated because fiber braided structure is closely related to the performance of fiber‐reinforced composites. However, existing methods for calculating process architectures have to deal with the coordinates of each fiber when modeling the three‐dimensional braiding method without individually controlled switches. The amount of data grows geometrically as the number of fibers and braiding steps increases. A methodology that enables simple and efficient computation of a model of the relationship between braiding parameters and fiber structure is urgently needed. This paper proposes a novel algorithm to trace the yarn carrier trajectories through machine simulation with Euler rotation‐matrix operations. To predict the real fabric architecture, a contraction factor is introduced to optimize the yarn trajectory while considering the volume of the yarn. The optimized fabric architecture is explored and the braiding process architecture with different braiding parameters is simulated according to the algorithm. Based on the exploration of the relationship between the braiding parameters and the process structure, a hexagonal‐annular braiding machine was established, which can fabricate fabrics with different cross‐sectional shapes. The simulation results were verified by the braiding experiments.

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Section: Validation and Analysis Of Fabric Process Architecturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A matrix computing method for visualizing switchless controlled 3D hexagonal‐annular rotary braiding process architecture

Zhang

et al. 2023

Polymer Composites

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“…Three-dimensional (3D) braided composites have received enormous attention due to their outstanding performances, such as high transverse strength, 1 high shear stiffness, 2 low delamination tendency, 3 and high damage tolerance. 4 They exhibit a huge potential in the engineering fields of transportation, aerospace, and sports, 5,6 especially for the applications such as drive shafts, fuselage frames, rocket launcher bodies, as well as sport gears. 7 With the development of 3D braided tubular structures, the recent research hotpots have been shifting from 3D braided plate-shaped structures to tubular ones.…”

Section: Introductionmentioning

confidence: 99%

A novel shell‐based hierarchical multiscale model for studying three‐dimensional four‐directional braided composite shafts

Wang,

Li,

Liu

et al. 2023

Polymer Composites

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The mechanical properties of three‐dimensional (3D) braided composites are related to damage evolution. However, the multi‐scale damage mechanism of 3D braided composite shafts remains unclear. The main purpose of this article is to propose a shell‐based multiscale finite element model for effectively predicting the compressive and torsional properties of 3D four‐directional (3D4d) braided composite shafts. Considering the relation between equivalent ply angles and yarn structures, the multiscale model was developed based on a universal tubular unit cell. The equivalent ply angle was derived through the yarns' local braiding and horizontal orientation angles, and the elastic properties of each equivalent ply were derived through the stiffness averaging method. Both derivations were achieved by creatively utilizing deformation gradient theory and Nanson's formula from continuum mechanics. LaRC04 failure criteria and energy‐based damage evolution law were implemented to characterize the equivalent UD‐ply's damage behaviors. The proposed model was validated experimentally, and good agreements were observed between the failure morphologies and load–displacement curves of FEA and experimental results. The results show that the fiber tension and compression damages are the major failure modes of 3D4d braided composite shafts under compressive and torque loads, respectively. Finally, a parametric study was carried out and compared with that from other literature to clarify the meaning of this article in relevant studies. It provides an efficient and useful tool for the design and manufacturing of 3D4d braided composite shafts with desirable mechanical properties.Highlights A shell‐based hierarchical multiscale model is developed for 3D braided composite shafts. An analyzing method is developed to investigate the tubular yarn structures. A large‐scale torsional experimental scheme is developed.

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“…Kim 6 developed multilayer interlocking braiding simulation software that can predict fabric structure and fiber volume fraction based on different shaped mandrels. Mei et al 7 proposed a methodology to model the process/topological yarn structure relationship of three-dimensional rotary braided rectangular preforms, and the lattice like ideal yarn topology was established using the yarn trajectories. Huber et al 8 verified the feasibility of artificial cellulose fiber braiding with the ITA-Herzog 3D rotary braiding machine.…”

Section: Introductionmentioning

confidence: 99%

Modeling and analysis of axial clearance between the carrier base and horn gear in radial braiding machines

Meng

Sun

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Radial braiding machines are widely used in the preparation of complex preforms of high-performance fibers. However, the structural characteristics of a radial braiding machine inevitably cause axial clearance between the carrier base and horn gear, which affects the running speed of braiding machines and the stability of carrier exchanges. It is easy to create disadvantages of yarn fuzzing and poor continuity of preformed fibers. In order to solve these problems, this study compares and analyzes the coplanar horn gears in the industry and designs a kind of noncoplanar horn gear. Through the study, it is found that the trajectory of a carrier on a horn gear is divided into the linear phase and circular phase, based on which the mathematical model of the axial clearance between the carrier base and horn gear is established. The variation curve of the clearance with the horn gear rotation angle is plotted by using MATLAB software. A simulation model of the axial clearance between the carrier base and horn gear is established by using ABAQUS software, and carrier bases with different clearances are made to run on the braiding machine. The reliability of the theoretical calculation is verified by combining simulation and experiment, and it is proved that the use of the noncoplanar horn gear in radial braiding machines can effectively reduce the clearance and reduce vibration and shock.

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A methodology for modeling the relationship between process and topological yarn structure of 3D rotary braided rectangular preforms

Cited by 12 publications

References 17 publications

A matrix computing method for visualizing switchless controlled 3D hexagonal‐annular rotary braiding process architecture

A matrix computing method for visualizing switchless controlled 3D hexagonal‐annular rotary braiding process architecture

A novel shell‐based hierarchical multiscale model for studying three‐dimensional four‐directional braided composite shafts

Modeling and analysis of axial clearance between the carrier base and horn gear in radial braiding machines

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