Parametric modeling method and mechanical behavior of 3D woven composites with warp insertion
To describe the microstructure and mechanical behavior of woven composites more accurately,a parametric model construction method for 3D woven composites with warp insertion was established.The equality constraints among the parameters in the geometric model were investigated,and the geometric constraint model was developed to realize the parametric description of the geometric model.Based on the geometric constraint model,the construction method of the parametric model was discussed,and the mapping relationship between the geometric model and the actual structure was established by input parameters,which improved the reduction degree of the geometric model to the actual structure,providing a guidance for material analysis and design.The progressive damage model was applied to predict the strength of 3D woven composites in the warp direction,and the prediction results were compared with the experimental results.Under the tensile load,the failure mode of the warp and binder yarn was mainly longitudinal fracture,the failure mode of the weft yarn was transverse fracture,and the failure mode of the resin-rich region was tensile fracture.The predicted strength of the material in the warp direction was 853.6 MPa,with a relative error of 2.3％,which was basically consistent with the experimental results.
3D woven compositesparametric modelprogressive damage modelstrength predictionfinite element simulation
万方数据
维普
