Bending property of novel <scp>3D</scp> woven variable thickness composites: Experiment and finite element analysis

Liu, Ao; Zhou, Xiaohai; Gao, Yuan; Wang, Ying; Xiong, Xiaoqing; Lv, Lihua

doi:10.1002/pc.27223

Cited by 6 publications

(4 citation statements)

References 29 publications

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“…Thus a multiscale FE model consisting of a mesoscopic deformed part and a macroscopic homogeneous part was considered. Referring to our previous work and considering the geometrical symmetry of the specimen, 35,36 a quarter macro–meso hybrid model is proposed to effectively balance the calculation accuracy and calculation efficiency 37,38 …”

Section: Modeling Proceduresmentioning

confidence: 99%

“…Referring to our previous work and considering the geometrical symmetry of the specimen, 35,36 a quarter macro-meso hybrid model is proposed to effectively balance the calculation accuracy and calculation efficiency. 37,38 In this paper, the highly adaptable second-order tetrahedral cell (C3D10) was used to mesh the unit-cell model. To ensure the quality and reliability of the finite element simulation, three mesh densities (0.15, 0.2, and 0.25 mm) were selected for comparison.…”

Section: Statistical Analysis Of Crack Poresmentioning

confidence: 99%

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Tensile‐after‐ablation progressive damage and the failure mechanism of 2.5D woven composites with crack pores

Yang,

Dong,

Zhang

2023

Polymer Composites

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Abstract2.5D woven structures are of interest in new thermal protection systems for their excellent interlayer properties and structural stability. In this paper, dense (CDP) and lightweight (CLP) carbon/phenolic 2.5D woven composites were prepared. Quasi‐static tensile experiments were performed on the specimens before ablation (TCDP‐0, TCLP‐0) and after ablation for 30 s (TCDP‐30, TCLP‐30). A quarter macro–meso hybrid model that takes into account the degradation of material properties after ablation and ablative crack pores was innovatively proposed. The predicted tensile elastic modulus is within 9% error from the experimental results. The results show that TCDP‐30 and TCLP‐30 have rapid damage expansion and lethal injury at smaller displacements than the pre‐ablation specimens. The displacement of the maximum load point of TCDP‐30 is 38.7% lower than that of TCLP‐30. The forms of damage in TCDP‐30 are dominated by matrix fragmentation and matrix cracks. The damage forms of TCLP‐30 are dominated by debonding and delamination.Highlights Micro‐CT was used to collect matrix fabrication defects and ablative crack pores defect. A quarter macro–meso hybrid model that takes into account the degradation of material properties after ablation and ablative crack pore was innovatively proposed. The tensile failure mechanism of the material after ablation was revealed by the combination of experiment and numerical method.

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Section: Modeling Proceduresmentioning

confidence: 99%

Section: Statistical Analysis Of Crack Poresmentioning

confidence: 99%

Tensile‐after‐ablation progressive damage and the failure mechanism of 2.5D woven composites with crack pores

Yang,

Dong,

Zhang

2023

Polymer Composites

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“…55 A meso-finite element was used to analyze the damage performance of 3D woven tapered composites by Liu et al. 56 Due to the absence of a tapered finite element formulation adapted to study laminated plates with variable thickness in the literature, the present study introduces a novel approach for the dynamic analysis of thin and internally tapered laminated plates. Strain and stress fields are expressed per classical laminated plate theory (CLPT).…”

Section: Introductionmentioning

confidence: 99%

A novel finite element for the vibration analysis of tapered laminated plates

Hosseinian,

Attarnejad

2024

Polymer Composites

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In the present study, a new tapered finite element is developed by incorporating the in‐plane effect in our recently introduced element for the vibration analysis of internally tapered laminated plates. Stress and strain fields for a laminated plate with varying thickness along two orthogonal directions are expressed through extending classical laminated plate theory. Shape functions regarding bending and membrane behavior are extracted from the bending and axial basic displacement functions of the Euler‐Bernoulli beam, respectively. Several laminated plates with different taper configurations have been studied, and the results obtained from vibration analysis are compared with those of the literature. Since the element can capture the exact form of variation in thickness, the solution has shown to be competitively accurate with considerably fewer total degrees of freedom and elements in comparison with conventional finite elements.Highlight A new finite element for thin, tapered, laminated plates is introduced. Laminates' stiffness matrix is obtained for arbitrary thickness variation. A novel method is adopted to derive in‐plane shape functions. C1 continuity is guaranteed along the edges of elements. Calculation cost is considerably reduced.

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“…Consequently, numerous studies have been conducted to investigate their mechanical properties under various loads such as tension, 4 compression, 5 and bending. 6 Previous research has demonstrated that the compression behavior of 3D woven composites, which is essential for the reliability of load-bearing structures, is affected by both the preform structure and fiber content along the loading direction. 4,7,8 It is feasible to improve the compression strength by optimizing the fiber content.…”

Section: Introductionmentioning

confidence: 99%

Out‐of‐plane compression properties and failure mechanism of gradient 3D woven composites

2023

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Gradient three‐dimensional (3D) orthogonal preforms with low‐ and high‐density regions were manufactured through the flexible oriented 3D woven process (FO3DWP) at different fiber volume fractions and z‐yarn contents. The layer porosity distribution of preforms was regulated by modifying fiber tension and measured using micro‐computed tomography (micro‐CT) technology. After impregnation with epoxy resin, the out‐of‐plane compression properties of gradient 3D woven composites were evaluated. The results indicated that the out‐of‐plane compression strength could be improved by the gradient design. In particular, the gradient composite with a fiber volume fraction of 0.46 and z‐yarn volume fraction of 0.05 exhibited the highest compression strength at 470 MPa. Furthermore, failure morphologies were analyzed using micro‐fracture photographs and scanning electron microscopy (SEM). The gradient design efficiently protected the interface between z‐directional fibers and the matrix by minimizing z‐yarn bending. However, the compression strength of 3D woven composites decreased as the z‐yarn content increased from 0.05 to 0.15, due to the increased bending of the z‐directional fibers during the compression test.

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Bending property of novel 3D woven variable thickness composites: Experiment and finite element analysis

Cited by 6 publications

References 29 publications

Tensile‐after‐ablation progressive damage and the failure mechanism of 2.5D woven composites with crack pores

Tensile‐after‐ablation progressive damage and the failure mechanism of 2.5D woven composites with crack pores

A novel finite element for the vibration analysis of tapered laminated plates

Out‐of‐plane compression properties and failure mechanism of gradient 3D woven composites

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