Effect of structural parameters on the torsional behavior of C/SiC pipe

Based on the principles of classical laminate theory, the 3D finite element analysis model of C/SiC pipe has been established by using finite element analysis software ABAQUS. Tsai-Hill failure criterion was applied to identify the critical areas of failure in composite laminates. Through the finite element simulation, the torsional properties of C/SiC pipe under different length, internal diameters and wall thickness were studied. The simulation results show that with the increase of the pipe length, the angle of twist per unit length decreased. With the increase of internal diameters of the pipe, the anti-torsion performance of the pipe increases gradually, and the angle of twist per unit length gradually decreases until it remains the same, and the wall thickness of the pipe have little effect on the torsional performance. The experimental results show that the simulated torsional properties are in good agreement with the experimental results.