Verify multi-section stem torsional and bending stress: rectangular, annular, circular, keyway, and neck sections per the Valve Design Manual.
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Torsional stress at the rectangular stem drive section.
Stress at the annular section with central bore.
Plain circular section torsional stress check.
Stress concentration at the keyway drive section.
Bending stress at the stem neck transition, the critical section.
Module 8 of 8 in the Floating Ball Valve design verification suite.
Input dimensions for rectangular, annular, circular, and keyway sections.
Enter the operating torque Mm from the total torque module.
Calculate torsional shear stress at each section.
Verify τN and σzy against material allowable stress [σ].
Enter your design parameters and get instant verification results.
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