Does anyone know of a source of an example problem(s) for the Structural Stress Method for the fatigue analysis of welds given in 2023 ASME B&PV Code Section VIII, Div. 2 Paragraph 5.5.5 that considers paragraph 5.5.5.3, which looks at multi-axial fatigue and the phase angle between shear and...
Regarding hydrotesting of ASME Code Section VIII, Div 1 vessels how to account for the behavior of elastomer seals at high temperature when the test is conducted at room temperature.
And a related question, how long to perform the hydrotest in consideration of the same?
Thanks
Does anyone know the rationale / basis for the low cycle fatigue modification in the structural stress method in the ASME Code Section VIII, Div. 2? The factor is essentially [E / ( 1 - nu^2)] on stress range as given in Eqn. (5-58) of Section 5.5.5.2 of the 2023 Edition of the Code.
Also...
Does anyone know the rationale / basis for the low cycle fatigue modification in the structural stress method in the ASME Code Section VIII, Div. 2? The factor is essentially [E / ( 1 - nu^2)] on stress range as given in Eqn. (5-58) of Section 5.5.5.2 of the 2023 Edition of the Code.
Also...
Code Folks,
In the ASME B&PV Code, Section VIII, Div. 2, Paragraph 5.5.3.2 Step 4(a) (as an example), the sentence reads "(a) If the local notch or effect of the weld is accounted for in the numerical model, then Kf = 1.0 in eqs. (5.30) and (5.36)." What does this mean? What would an adequate...
Do nozzle flange bolts for a pressure vessel need to be evaluated for fatigue as part of a vessel fatigue assessment per ASME boiler and pressure vessel code requirements (Section VIII, Div. 2) or are they investigated as part of the piping analysis?
Thank you for your input.
I am interested in the basis for the 2.4 and 3 factors used for Beta in Table 5.5 of ASME Section VIII, Division 2.
I believe the 1.5 factor in Table 5.4 for Limit Load Analysis is based on the acceptable load being 2/3 of the collapse load calculated for example via FEA (EPP material behavior)...
I also happened across the Dec. 2004 thread on Design of Foundations for Dynamic Loading with broken links to the articles:
"Don't Gamble on Machinery Foundations"
"Principles of Foundation Design for Engines & Compressors"
"Basic Vibration & Vibration Isolation Theory"
Someone has...
I am trying to locate federal, state, or other codes/standards/regulations that discuss design methods/requirements/criteria for design of components to be used on over-the-road vehicles(for example a refigeration unit on a truck). Are there response spectra or random vibration data available...
Does anyone have any recommendations of a good reference on hyperelasticity (Mooney-Rivlin, Neo-Hookean, Blatz-ko, etc.)? The overwhelming majority of our work is in the metals industry and our company's library doesn't have any references on this subject. Thanks in advance.
Where do i find the "standard" positional tolerances used in the aerospace/aicraft industry? That is, if I want to locate a tooling detail, is there an industry-accepted minimum tolerance applicable for a specified position (e.g the hole must be 5 inches from a datum with a tolerance of +/-0.0x...
