Most of the process equipment is subjected to compressive loadings during their operation (e.g. Pressure vessel/ heat exchanger sub. to full vacuum). Sometimes this type of loading results in buckling of the component causing buckle failure of the structure. Hence process equipment needs to be evaluated for any possible buckling failure. This type of failure is mainly observed in long vessels, vessels with a larger diameter, vessels with improperly spaced stiffeners.
Process equipment manufacturer from India & Abroad approached ANALYZER to seek assistance in evaluating the design of their newly developed equipment against buckling failure using simulation techniques & provide the solution in case of any observed failure.
The structure was analyzed using Finite Element Method for elastic buckling analysis. The loading used for this analysis is unit loading. The structure is solved for bifurcation analysis & design factor calculations were performed.
The results showed that the structure is the calculated design factor for the structure is greater than the min. design factor as defined in clause 5.4 of ASME BPVC Sec. VIII Div. 2. Hence, the structure’s design was predicted to safe against buckle failure during its service life.