Learning Forum

[fatihdrck]

Hi to everyone,nI have a problem with simulating optimum filament angle for composite tubes. I did a series of analises on the models wounded with different winding angles, to find the optimum filament angle as 55o for the internally pressurized composite tube. However, in my analysis, as the angle of winding increases, the strength of the tube increases.ni. I have checked the fiber direction, transverse direction and so winding angle. Ther is no problem.nii. I have checked the boundary conditions (both ends of the tube is fixed) and loading.niii. I have get IRF for each ply to perform Last Ply Failure analysis. But, as the angle of winding increases in the models, the strength of the tubes increases.nnSo Who can help me find the fault?.

[April Wang]

Hi Fatihdrck,nIt's hard to tell any problems from what you have described for the simulation. Do you have some images displaying the composite setup?.

[fatihdrck]

Hi Fatihdrck,It's hard to tell any problems from what you have described for the simulation. Do you have some images displaying the composite setup?https://forum.ansys.com/discussion/comment/104952#Comment_104952

Hi Apwang,nThank you for quick reply. Here is the desired result according to strength of the filament wounded composite tubes:nAs it is visible, the filament winding angle of +55/-55 degree makes the tube the most strengthful. And here are the some images from modelling steps:nnThe problem in my analysis is that the burst pressure of the models increases by increasing the winding angle. Whereas, i need to obtain a graph similar to the first figure.nThanks for your help.n