Question:
I would like to determine how the critical angle can be calculated in ANSYS. The angle would be the angle of rotation of the structure about some point. The critical angle the maximum angle beyond which a structure becomes unstable & may topple under self weight.
Answer:
ANSYS can calculate the critical angle but it will require some work on the part of the user. The procedure is basically to calculate the location of the center of gravity using Inertia Relief and the PSOLVE command. It is necessary to use PSOLVE since ANSYS will only calculate the exact center of gravity during the solution phase; the inertia values that are printed out at the beginning of solution are approximations. Details for performing an Inertia Relief analysis may be found in the Structural Analysis Guide; details for the procedure may be found in the Theory Manual. Once the location of the center of gravity is determined, the critical angle would be found as the angle between the point or line of rotation and the center of gravity using standard trigonometry.
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Question: I would like to determine how the critical angle can be calculated in ANSYS. The angle would be the angle of rotation of the structure about some point. The critical angle the maximum angle beyond which a structure becomes unstable & may topple under self weight. Answer: ANSYS can calculate the critical angle but it will require some work on the part of the user. The procedure is basically to calculate the location of the center of gravity using Inertia Relief and the PSOLVE command. It is necessary to use PSOLVE since ANSYS will only calculate the exact center of gravity during the solution phase; the inertia values that are printed out at the beginning of solution are approximations. Details for performing an Inertia Relief analysis may be found in the Structural Analysis Guide; details for the procedure may be found in the Theory Manual. Once the location of the center of gravity is determined, the critical angle would be found as the angle between the point or line of rotation and the center of gravity using standard trigonometry. |
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