DESIGN BY ANALYSIS (DBA) PER ASME SECTION VIII-2, DESIGN OPTIMIZATION
Design by Formula (DBF) approach is used for the majority of pressure
vessels manufactured today. The formulas are proven based on many decades of
collective industry experience and represent a safe approach to pressure
vessel design. DBF has a limitation in that it is only applicable to standard
geometries covered by the various ASME Codes (cylindrical, spherical). Furthermore,
DBF tends to be overly conservative resulting in designs that may not be economical.
For non-standard geometry and/or design optimisation we can use the Design by
Analysis (DBA) approach. DBA establishes the maximum allowable load for the vessel
design by performing a detailed stress analysis and comparing the results against
prescribed Code limits. DBA requirements are prescribed in ASME Section VIII-2 to
guard against all possible failure modes such as gross plastic deformation, collapse,
ratchetting, buckling, and fatigue.
FINITE ELEMENT ANALYSIS
We also provide FEA services for machine and product design optimization. We are knowledgeable
and have experience performing structural, thermal, and fatigue FEA.