A Study On Mechanical Properties Of Braided Laminated Composites

Composite technology is a strategic key technology for national defense. To someextent, the research and application of the advanced composite represent thedevelopment level of a nation’s science and technology. Especially in aircraft industry,various kinds of advanced aircraft are closely related to advanced materials technology.As the application of composite increases in aircraft industry, advanced digital designmanufacturing technology and computer aided engineering (CAE) technology havebeen widely applied in composite manufacturing field.This research use our special skill to study the efficiency of the braided laminatedcomposite of a CKFR-PMCs, with the national/industry standard as a benchmark, thelarge commercial finite element software ABAQUS as modeling computing platforms,the Python language script parameter to design language. The study has established thelayer structure representative volume unit (RVE) and related sample numerical modelsof mechanical properties test, including the basic mechanical tests of composite such asextrusion/compression test, shear test, flexural performance test, interplay shearstrength test,and longitudinal transverse shear test.The study applies Python languageto program and achieves to control the portion of the fiber volume fraction in braidedlaminated composite finite element models and the conversion of the output variablesof the anisotropic material from the local coordinate system to global coordinatesystem. What’s more, the study also makes an inverse prediction of the performance ofthe carbon/Kevlar fiber and matrix materials in the layers of braided laminatedcomposite and calculates the performance of the composite containing40%fiber.This paper gives a more complete idea and method to predict the mechanicalproperty of the braided laminated composite. The results also can be applied into theprediction of different properties of the fiber, matrix materials, different fiber volumefraction content, and different fiber laying layer angles, different loading directions offiber reinforced materials and the mechanical performance of the braided laminatedcomposite. It will also offer some numerical preparation and method to carry outfurther multi-scale and cross-scale research on the braided laminated composite.