原文传递
Experimental and Numerical Analysis of Triaxially Braided Composites Utilizing a Modified Subcell Modeling Approach.
| 题名： | Experimental and Numerical Analysis of Triaxially Braided Composites Utilizing a Modified Subcell Modeling Approach. |
| 作者： | Cater, C.; Xiao, X.; Goldberg, R. K.; Kohlman, L. W. |
| 关键词： | Polymer matrix composites, Micromechanics, Impact tests, Braided composites, Numerical analysis, Tensile tests, Composite structures, Failure modes, Crack initiation, Failure, Loads (forces), Predictions |
| 摘要： | A combined experimental and analytical approach was performed for characterizing and modeling triaxially braided composites with a modified subcell modeling strategy. Tensile coupon tests were conducted on a [0deg/60deg/-60deg] braided composite at angles of 0deg, 30deg, 45deg, 60deg and 90deg relative to the axial tow of the braid. It was found that measured coupon strength varied significantly with the angle of the applied load and each coupon direction exhibited unique final failures. The subcell modeling approach implemented into the finite element software LS-DYNA was used to simulate the various tensile coupon test angles. The modeling approach was successful in predicting both the coupon strength and reported failure mode for the 0deg, 30deg and 60deg loading directions. The model over-predicted the strength in the 90deg direction; however, the experimental results show a strong influence of free edge effects on damage initiation and failure. In the absence of these local free edge effects, the subcell modeling approach showed promise as a viable and computationally efficient analysis tool for triaxially braided composite structures. Future work will focus on validation of the approach for predicting the impact response of the braided composite against flat panel impact tests. |
| 总页数： | Cater, C.; Xiao, X.; Goldberg, R. K.; Kohlman, L. W. |
| 报告类型： | 科技报告 |
相关文献
- Development of a Subcell Based Modeling Approach for Modeling the Architecturally Dependent Impact Response of Triaxially Braided Polymer Matrix Composites.
- Characterization and Structural Behavior of Braided Composites. Final rept.
- Cohesive Laws and Progressive Damage Analysis of Composite Bonded Joints, a Combined Numerical/Experimental Approach.
- Investigation of Shoaling in the Federal Navigation Channel, Waukegan Harbor, Illinois.
- Dynamic Crush Performance of Thermoplastic and Resin Infused Thermoset Triaxially Braided Composite Structures.
检索历史
应用推荐
