Investigation on the compressive damage mechanisms of 3D woven composites considering stochastic fiber initial misalignment

2021 ◽  
Vol 143 ◽  
pp. 106295
Author(s):  
Tao Zheng ◽  
Licheng Guo ◽  
Ruijian Sun ◽  
Zhixing Li ◽  
Hongjun Yu
Keyword(s):  
Woven Composites ◽  
Damage Mechanisms ◽  
3D Woven Composites ◽  
Compressive Damage

scholarly journals Effect of off-axis angle on low-velocity impact and compression after impact damage mechanisms of 3D woven composites

2020 ◽  
Vol 192 ◽  
pp. 108672 ◽  
Author(s):  
Diantang Zhang ◽  
Yuanhui Gu ◽  
Zhongwei Zhang ◽  
Minghao Jia ◽  
Songlin Yue ◽  
...  
Keyword(s):  
Impact Damage ◽  
Low Velocity Impact ◽  
Woven Composites ◽  
Low Velocity ◽  
Damage Mechanisms ◽  
Velocity Impact ◽  
Compression After Impact ◽  
3D Woven Composites

Experimental and numerical investigation of open-hole tensile properties and damage mechanisms of 3D woven composites under weft-loading

2021 ◽  
Vol 161 ◽  
pp. 107455
Author(s):  
Qiwei Guo ◽  
Yifan Zhang ◽  
Diansen Li ◽  
Qingtao Lv ◽  
Xiaolun Sun ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Numerical Investigation ◽  
Woven Composites ◽  
Damage Mechanisms ◽  
Open Hole ◽  
3D Woven Composites

Microscopic residual stresses analysis and multi-objective optimization for 3D woven composites

2021 ◽  
Vol 144 ◽  
pp. 106310
Author(s):  
Qi Wang ◽  
Xufeng Yang ◽  
Haixin Zhao ◽  
Xiaowen Zhang ◽  
Guanglong Cao ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Woven Composites ◽  
Multi Objective Optimization ◽  
Multi Objective ◽  
3D Woven Composites

scholarly journals Open hole quasi-static and fatigue characterisation of 3D woven composites

2015 ◽  
Vol 131 ◽  
pp. 765-774 ◽  
Author(s):  
S. Dai ◽  
P.R. Cunningham ◽  
S. Marshall ◽  
C. Silva
Keyword(s):  
Woven Composites ◽  
Open Hole ◽  
3D Woven Composites

Comparison of progressive damage simulation of 3D woven composites between voxel and conformal discretization models

2021 ◽  
pp. 103860
Author(s):  
Tao Zheng ◽  
Licheng Guo ◽  
Ziheng Tang ◽  
Tongtong Wang ◽  
Zhixing Li
Keyword(s):  
Woven Composites ◽  
Progressive Damage ◽  
3D Woven Composites ◽  
Damage Simulation

EXPERIMENTALLY VALIDATED SIMULATIONS OF BLIND HOLE DRILLING IN 3D WOVEN CARBON/EPOXY COMPOSITE WITH PROCESSING-INDUCED RESIDUAL STRESSES

2021 ◽  
Author(s):  
ARTURO LEOS ◽  
KOSTIANTYN VASYLEVSKYI ◽  
IGOR TSUKROV ◽  
TODD GROSS ◽  
BORYS DRACH
Keyword(s):  
Residual Stresses ◽  
Epoxy Matrix ◽  
Mechanical Performance ◽  
Matrix Cracking ◽  
Woven Composites ◽  
Hole Drilling ◽  
Blind Hole ◽  
Matrix Cracks ◽  
Numerical Predictions ◽  
3D Woven Composites

Manufacturing-induced residual stresses in carbon/epoxy 3D woven composites arise during cooling after curing due to a large difference in the coefficients of thermal expansion between the carbon fibers and the epoxy matrix. The magnitudes of these stresses appear to be higher in composites with high throughthickness reinforcement and in some cases are sufficient to lead to matrix cracking. This paper presents a numerical approach to simulation of development of manufacturing-induced residual stresses in an orthogonal 3D woven composite unit cell using finite element analysis. The proposed mesoscale modeling combines viscoelastic stress relaxation of the epoxy matrix and realistic reinforcement geometry (based on microtomography and fabric mechanics simulations) and includes imaginginformed interfacial (tow/matrix) cracks. Sensitivity of the numerical predictions to reinforcement geometry and presence of defects is discussed. To validate the predictions, blind hole drilling is simulated, and the predicted resulting surface displacements are compared to the experimentally measured values. The validated model provides an insight into the volumetric distribution of residual stresses in 3D woven composites. The presented approach can be used for studies of residual stress effects on mechanical performance of composites and strategies directed at their mitigation.

Modeling strategies of 3D woven composites: A review

2011 ◽  
Vol 93 (8) ◽  
pp. 1947-1963 ◽  
Author(s):  
Mahmood Ansar ◽  
Wang Xinwei ◽  
Zhou Chouwei
Keyword(s):  
Woven Composites ◽  
3D Woven Composites

Mesh generation and geometrical modelling of 3D woven composites with variable tow cross-sections

2012 ◽  
Vol 51 (1) ◽  
pp. 103-111 ◽  
Author(s):  
E. Potter ◽  
S.T. Pinho ◽  
P. Robinson ◽  
L. Iannucci ◽  
A.J. McMillan
Keyword(s):  
Cross Sections ◽  
Mesh Generation ◽  
Woven Composites ◽  
Geometrical Modelling ◽  
3D Woven Composites

A multiscale approach for modelling impact on woven composites under consideration of the fabric topology

2018 ◽  
Vol 52 (21) ◽  
pp. 2859-2874 ◽  
Author(s):  
Martin Schwab ◽  
Melanie Todt ◽  
Heinz E Pettermann
Keyword(s):  
Total Energy ◽  
Energy Absorption ◽  
Temporal Distribution ◽  
Woven Composites ◽  
Multiscale Approach ◽  
Stress Concentrations ◽  
Damage Mechanisms ◽  
Explicit Finite Element ◽  
Impact Behaviour ◽  
The Impact

A computationally efficient multiscale modelling approach for predicting impact damage within fabric reinforced laminated composites is presented. In contrast to common ply-level approaches, the topology of a multi-layered fabric reinforced laminate is resolved at tow-level for a sub-domain embedded in a shell layer with homogenised representation of the laminate. The detailed sub-domain is entirely modelled using shell elements, where material nonlinearities such as damage and plasticity-like behaviour of the tows, inelastic behaviour of unreinforced resin zones up to failure and delamination between plies are accounted for. To exemplify the capabilities of the approach, an explicit finite element simulation of a laminated plate consisting of eight carbon fabric reinforced epoxy plies with eight harness satin weaving style in a drop weight impact test setup is conducted. The spatial and temporal distribution of intra- and inter-ply damage is predicted and the total energy absorption by the plate, as well as the contributions of individual damage mechanisms are evaluated. The predictions show very good agreement with corresponding experimental data from the literature and give insight into the impact behaviour of the laminate beyond the capability of usual experiments. The new approach allows to resolve the stress concentrations due to fabric topology in detail. Compared to common ply-level approaches this is reflected in different predicted energy absorptions per mechanism although, the total energy absorption hardly differs. This is especially important when the post impact behaviour of laminates is predicted as it is strongly influenced by the extent of the individual damage mechanisms.

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