Designing Of T-shaped Three-dimensional Woven Fabric And Analysis Mechanical Properties Of Composites Made Of It

T-beam as a common project structures, has been widely used in the fields of aerospace and maritime construction. Due to presence of non-fixed factors, it may suffer bird strike, hail and some damage caused by water and other floating debris. Compared with the structure of three-dimensional knitted fabric and three-dimensional braided fabric, the three-dimensional woven fabric has special structural characteristics and excellent mechanical properties, etc. So, designing work is very important in order to protect its composite excellent mechanical properties and formability. Thus designing and manufacturing of high flexural strength and impacting resistance of T-shaped three-dimensional woven composites, which will have a promising future.T-shaped three-dimensional fabric, glass yarn and basalt filament bundles respectively as warp, weft; with three different beams has been woven in the general sample loom. Then, composite material should be preparation with crafts of VARTM. The high T-shaped three-dimensional woven composites, which have three different beams, would be tested of bending performance under quasi-static in electronic universal testing machine.Then researched its failure modes of materials and energy absorption mechanism, etc. Resulting from displacement experiments-load curve and displacement-absorb energy curve diagram view, with increasing displacement, the 12 mm height beam of 3D T-shaped overall woven composite could carry a maximum load and energy absorption. While 0 mm height beam material was last. As a typical bending failure, 0 mm height beam material has the compression failure in the front, tensile failur3 e in the back. The damage of beam height of 6mm and 12 mm material was compression failure in the front, shear failure backside. So, the matrix cracking, fiber breakage and other damage were the main way to absorb energy.Impact process of T-shaped three-dimensional overall woven composites almost instant occurs. Stress waves spread very fast and basic structural response of materials were almost failure. Stress waves hampered matrix cracking with other factors, not balance, which was easy to form stress concentration at the position of the pendulum contact materials, causing fracture. At last, the 12 mm beam has the highest energy absorption and maximum impact strength. While, 0 mm height beam was minimum energy absorption and minimum impact strength.The same size structures have been built based on the overall three-dimensional T-shaped woven composite sample size. Three different high T-shaped beams of composite materials were tested quasi-static bending properties by ABAQUS finite element software simulation. Then, from displacement-load curves, displacement and energy absorption curves, simulation results, compared with the experimental results, were in good agreement about failure modes. Visible, the model is correct, for bending mechanical properties of 3D T type the whole woven composite of simulation, it can provide certain help in the future. It can in turn provide some guidance to reduce the test quantity.