Abstract: The finite element method was used to analyze the stress distribution of the connection structure between non folded slant conical shell and cylinder under internal pressure. The results showed that under internal pressure, there were significant local stresses at both the large and small ends of the slant conical shell. The maximum stress intensity at the large end occurred at the position with the largest cone angle at the connection between the slant conical shell and the large end, while the maximum stress intensity at the small end occurred at the position with a small cone angle near the lower part of the connection between the slant conical shell and the small end. Bending stress is the main stress at both the large and small ends of slant conical shells, but the bending stress at the small end of slant conical shell is higher than that at the large end. In addition, to facilitate the comparison of stress distribution at the connection between slant conical shells of different sizes and the cylinder, this paper introduces a stress amplification coefficient and studies the variation law of stress at this point through the variation of this coefficient.

Key words: slant conical shell, finite element method, stress analysis, stress amplification coefficient