Effect of combustion pressure on small-size flexible joint structure

This paper studied the effect of combustion pressure on the axial displacement, the reinforcement and the elastomeric ring's structural strength of the small flexible joint structure. In the research, we used the ANSYS finite element code and adopted the Mooney-Rivlin material model for the elastomeric ring. The numerical simulation results, the literature experimental results and the formula results were compared. The results show that the axial displacement increases approximately linearly with the increase of chamber pressure, and the simulation value is higher than the experimental value when the chamber pressure is low, and the situation is opposite when the pressure is high. The both sides' intensity is higher than the middle part of the reinforcement. The elastomeric ring's sheer stress maximum value appears at the edge, and the material model chosen is correct.