Multi-scale progressive failure simulation of 3D woven composites under uniaxial tension

2019 ◽  
Vol 208 ◽  
pp. 233-243 ◽  
Author(s):  
Gang Liu ◽  
Li Zhang ◽  
Licheng Guo ◽  
Feng Liao ◽  
Tao Zheng ◽  
...  
Keyword(s):  
Uniaxial Tension ◽  
Progressive Failure ◽  
Woven Composites ◽  
Multi Scale ◽  
Failure Simulation ◽  
3D Woven Composites

Evaluation of Elastic Properties of Satin Composites

2013 ◽  
Vol 577-578 ◽  
pp. 229-232
Author(s):  
S. Patel ◽  
Omar Bacarreza ◽  
M.H. Aliabadi
Keyword(s):  
Elastic Properties ◽  
Stiffness Matrix ◽  
Woven Composites ◽  
Scale Analysis ◽  
Woven Composite ◽  
New Materials ◽  
Element Analysis ◽  
Multi Scale ◽  
3D Woven Composites ◽  
Multi Scale Analysis

Advancements in the numerical modelling of 3D woven composites have allowed improved understanding of the mechanical behaviour and in turn aided the design and analysis of new materials. The objectives of this paper are to utilise FEA (Finite Element Analysis) methods to determine the elastic properties of a given woven composite. The investigation focuses on satin weaves, considering both 5-harness and 8-harness varieties. Multi-scale analysis results of an RVE are used to formulate the stiffness matrix and consequently determine the elastic properties; these will be compared to published analytical methods and experimental results. Further investigations considering the effect of weave parameters on the elastic properties are conducted.

PROGRESSIVE DAMAGE RESPONSE OF 3D WOVEN COMPOSITES VIA THE MULTISCALE RECURSIVE MICROMECHANICS SOLUTION WITH TAILORED FIDELITY

2021 ◽  
Author(s):  
BRETT A. BEDNARCYK ◽  
EVAN J. PINEDA ◽  
TRENTON M. RICKS ◽  
SUBODH K. MITAL
Keyword(s):  
Progressive Failure ◽  
Woven Composites ◽  
Resin Matrix ◽  
Length Scale ◽  
Computationally Efficient ◽  
Damage Models ◽  
Damage Response ◽  
Generalized Method Of Cells ◽  
3D Woven Composites ◽  
Different Levels

Progressive failure simulations have been performed for orthogonal 3D woven composites consisting of RTM6 resin matrix and AS4 carbon fibers. The Multiscale Recursive Micromechanics approach has been used, which, while being computationally efficient, captures the primary effects of the microstructure at each considered length scale. This approach also enables use of any micromechanics theory at any length scale, and herein, the fidelity of the chosen theories across the scales has been tailored to strike a balance with computational efficiency. The Mori-Tanaka method is employed at the lowest length scale, the Generalized Method of Cells is used at intermediate scales, and the High-Fidelity Generalized Method of Cells is used at the highest woven composite repeating unit cell scale. Furthermore, two different damage models, also with different levels of fidelity and efficiency, have been used for the resin material at the lowest length scale. Results for the mechanical behavior in response to loading in various directions are compared for the two damage models and with available test data.

Multi-scale strength and buckling analysis of 3D woven composite spherical shells subjected to hydrostatic pressure

2020 ◽  
pp. 152808372098199
Author(s):  
Xiaoxu Wang ◽  
Hongyun Li ◽  
Tiantian Yang ◽  
Zhuhui Zhang ◽  
Chengyan Zheng ◽  
...  
Keyword(s):  
Finite Element ◽  
Hydrostatic Pressure ◽  
Thickness Ratio ◽  
Woven Composites ◽  
Woven Composite ◽  
External Hydrostatic Pressure ◽  
Spherical Shells ◽  
Multi Scale ◽  
Delamination Resistance ◽  
3D Woven Composites

3D woven composites are considered as the ideal materials for subsea pressure shells owing to their exhibit excellent out-of-plane properties of delamination resistance and compressive damage resistance, which greatly improves the bearing capacity of the structure. This paper presents the influence of the radius-to-thickness ratio and the initial defects on the 3D woven composite spherical shells subjected to external hydrostatic pressure using the multi-scale finite element and theoretical methods. Two kinds of typical 3D woven structures, curved shallow-crossing linking 2.5D, and straight shallow-crossing linking 2.5D, are selected. The results show that the proposed multi-scale finite element method is capable of accurately predicting the strength and buckling behavior of 3D woven composite spherical shells under external hydrostatic pressure loadings, validated by the comparison of theoretical predictions. Furthermore, the fabric structures, radius-to-thickness ratio, and initial defects affect importantly the mechanical behavior of 3D woven composites pressure shells.

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