Computational Structure Analysis of Stacked Vessel

PROBLEM STATEMENT: STACKED VESSEL

The stacked vessels will experience seismic conditions for San Francisco California. These conditions will be analyzed using finite element analysis and the UB-97 code. ASME section IID allowed stresses will be used with VIII-2 rules to determine the acceptability of the design. All internal surfaces are pressurized and openings have exit pressure forces applied.

INPUT DATA

Material strength properties used in this report are obtained from ASME IID, Table 1A, and are suitable for VIII-1 components. The rules of ASME VIII-2 are used to set the stress limits.

MODELLING OF PRESSURE VESSEL

The model has been created in Solid Works and imported to Ansys workbench in ‘stp’ format.

MATERIAL USED

Following two materials were used for the construction of pressure vessel.

MESHING THE GEOMETRIC MODEL

The meshing of geometry was performed in ANSYS and using 3D tetrahedral elements.

APPLICATION OF LOAD AND BOUNDARY CONDITIONS

The bottom set of saddles are fixed to prevent rigid body motion. The vessel experiences a pressure of 200 psi at all the internal surfaces and a force of 674.372 lbf is applied at the opening.