PVEng continuously strives to provide excellent value and as such have not implemented a fee increase in almost 4 years. Please note some jurisdictions are experiencing a record volume of CRN requests. As such, there may be significant timeline delays for both standard and expedited services. Jurisdiction processing times are beyond the control of PVEng.
We appreciate your patience. Pressure Vessel Engineering is now employee owned! Laurence Brundrett has retired and the PVEng employees have purchased the company so we can continue to support our customers. Click for additional details. We use FEA to design and validate fittings and vessels that can not be designed by rule-based codes like VIII-1 or B31.3.
We appreciate your patience. Pressure Vessel Engineering is now employee owned! Laurence Brundrett has retired and the PVEng employees have purchased the company so we can continue to support our customers. Click for additional details. We use FEA to design and validate fittings and vessels that can not be designed by rule-based codes like VIII-1 or B31.3.
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Pressure Vessel Engineering is celebrating 20 years of helping companies obtain CRN registrations and validating non-CRN pressure equipment designs. Over the years we have registered thousands of vessels, boilers, heat exchangers, fittings, piping systems and other components that don't fall neatly into any categories.
What is Finite Element Analysis (FEA)? When can it be used? Many of our customers are only vaguely aware of how useful this emerging tool can be in solving their design problems. If you have never heard of it before, you are not alone. This short pictorial shows FEA in use on what at first glance looks like a simple design problem.
Pressure vessel code rules exist for the analysis of simple objects like pipes and heads and more complex objects like flanges and nozzles. Where the code rules exist, they have to be used. However, most code rules do not calculate real stresses. The best they can do is provide pass/fail acceptance criteria.
The life of a vessel under cyclic service is related to the intensity of the alternating stress and the number of cycles it experiences. The fatigue life curves used under ASME VIII-2 to calculate the permitted cycle life of a vessel are based on a large factor of safety compared with actual cycle life curves.
Linearization separates FEA stresses into membrane and bending. Examples are provided along with sample data and a spreadsheet based stress linearization tool. The ASME pressure vessel code is based on the observed safety of vessels. It is a real world working standard - its roots were born of failed vessels in an era long before concepts like stress concentrations were even known.
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