Neural network assisted multiscale analysis for the elastic properties prediction of 3D braided composites under uncertainty

2018 ◽  
Vol 183 ◽  
pp. 550-562 ◽  
Author(s):  
Georgios Balokas ◽  
Steffen Czichon ◽  
Raimund Rolfes
Keyword(s):  
Neural Network ◽  
Elastic Properties ◽  
Multiscale Analysis ◽  
Braided Composites ◽  
3D Braided Composites

Efficient multiscale analysis method for the compressive progressive damage of 3D braided composites based on FFT

2020 ◽  
Vol 231 (12) ◽  
pp. 5047-5061
Author(s):  
Bing Wang ◽  
Guodong Fang ◽  
Jun Liang ◽  
Shuo Liu ◽  
Songhe Meng
Keyword(s):  
Multiscale Analysis ◽  
Progressive Damage ◽  
Analysis Method ◽  
Braided Composites ◽  
3D Braided Composites

scholarly journals An FEM Analysis with Consideration of Random Void Defects for Predicting the Mechanical Properties of 3D Braided Composites

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Kun Xu ◽  
Xiaomei Qian
Keyword(s):  
Mechanical Properties ◽  
Elastic Properties ◽  
Volume Fraction ◽  
Resin Matrix ◽  
Braided Composites ◽  
3D Fem ◽  
Simple Method ◽  
3D Braided Composites ◽  
Representative Unit Cell ◽  
Void Defects

Random void defects have detrimental effect on the mechanical properties of 3D braided composites. A 3D FEM based on a periodic representative unit cell is developed to appraise the mechanical properties of 3D 4-directional braided composites containing the defects. Two basic types of void defects, such as the dry patches in the reinforced yarns and the voids in the resin matrix pocket, have been taken into account. A simple method for generating the random void defect elements in FEM is presented. The FE software ABAQUS is adopted to study the elastic properties. The predicted effective elastic properties are in good agreement with the available experimental data, demonstrating the applicability of the mesomechanical FEM. By considering the random distribution of void defects, the probability statistics analysis of mechanical properties was conducted. In addition, the effect of the void volume fraction on the elastic properties was discussed in detail, and some useful conclusions were drawn herein.

A multiscale elasto-plastic damage model for the nonlinear behavior of 3D braided composites

2019 ◽  
Vol 171 ◽  
pp. 21-33 ◽  
Author(s):  
Chunwang He ◽  
Jingran Ge ◽  
Dexing Qi ◽  
Jiaying Gao ◽  
Yanfei Chen ◽  
...  
Keyword(s):  
Damage Model ◽  
Nonlinear Behavior ◽  
Braided Composites ◽  
3D Braided Composites ◽  
Plastic Damage

Impact tensile behavior and frequency response of 3D braided composites

2011 ◽  
Vol 82 (3) ◽  
pp. 280-287 ◽  
Author(s):  
Xuehui Gan ◽  
Jianhua Yan ◽  
Bohong Gu ◽  
Baozhong Sun
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
Tensile Properties ◽  
High Strain ◽  
Tensile Modulus ◽  
Tensile Failure ◽  
Uniaxial Tensile ◽  
Strain Rates ◽  
Braided Composites ◽  
3D Braided Composites

The uniaxial tensile properties of 4-step 3D braided E-glass/epoxy composites under quasi-static and high-strain rate loadings have been investigated to evaluate the tensile failure mode at different strain rates. The uniaxial tensile properties at high strain rates from 800/s to 2100/s were tested using the split Hopkinson tension bar (SHTB) technique. The tensile properties at quasi-static strain rate were also tested and compared with those in high strain rates. Z-transform theory is applied to 3D braided composites to characterize the system dynamic behaviors in frequency domain. The frequency responses and the stability of 3D braided composites under quasi-static and high-strain rate compression have been analyzed and discussed in the Z-transform domain. The results indicate that the stress-strain curves are rate sensitive, and tensile modulus, maximum tensile stress and corresponding tensile strain are also sensitive to the strain rate. The tensile modulus, maximum tensile stress of the 3D braided composites are linearly increased with the strain rate. With increasing of the strain rate (from 0.001/s to 2100/s), the tensile failure of the 3D braided composite specimens has a tendency of transition from ductile failure to brittle failure. The magnitude response and phase response is very different in quasi-static loading with that in high-strain rate loading. The 3D braided composite system is more stable at high strain rate than quasi-static loading.

An Analytical Model for Predicting the Elastic Properties of Triaxially Braided Composites

2008 ◽  
Vol 28 (15) ◽  
pp. 1903-1916 ◽  
Author(s):  
Ping Zhang ◽  
Liang-Jin Gui ◽  
Zi-Jie Fan
Keyword(s):  
Elastic Properties ◽  
Analytical Model ◽  
Braided Composites
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