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In the 2023 edition of ASME Section III, Division 1, Subsection NB, it is stipulated that stress analysis shall adhere to the requirements outlined in Appendix XIII (part of the Section III appendices). Within this appendix, Figure XIII-2100-1 provides the stress classification...
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I have a question about buckling analysis in ASME SEC VIII DIV.2 5.4 (PROTECTION AGAINST COLLAPSE FROM BUCKLING). The mentioned article says that the load combinations should be applied as per Table 5.3. I studied the example in ASME Section VIII - Division 2 Example Problem Manual...
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I'd like to know how the Nozzle Pro software isolates the primary membrane local stress contour as the one I've attached to the post. Is there any way I can extract the same contour in the software like Abaqus?
I would like to get information about the equivalent or stick mass model (lumped mass model). I would like to know what this method is based on. I want to represent a big pressure vessel and its surrounding structures as beam-column elements and investigate the structure's response to seismic...
Hello friends, I have reached an arrangement consisting of two furnaces and thirteen return fire tubes. The general duty of the heater is 10 MW. The heater follows a natural draft circulation. I want to put four burners into each furnace to gain the task. Is it possible?
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There are two types of lifting lug orientation in PV-elite, which are flat and perpendicular. We have a particular type of lifting lug in a standard drawing, and I am confused about its orientation. The difficulties arose when I was about to put the amount of off parameter in the lifting...
I have been asked to get the thermal calculations of a heater again and verify them because our company plans to manufacture this equipment in the near future. In the opening pages, there are two topics that I cannot understand how and from what relationship they were obtained. The first issue...
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I am told to perform a finite element analysis for a transportation process of a special vessel. The model includes trunnions and a tailing lug. For the shell, I executed the linearization process and compare the results with allowable values given in ASME-SecII, Part D, but I am...
I am wondering if I want to apply the load cases involving thermal loads (such as that shown in the photo) and the design temperature is 600 degrees of centigrade (in heat exchanger) and I want to apply the 1.3 safety factor to the loads then what would be the temperature that I'm going to apply...
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In a pressure vessel, we have both internal and external pressures, and the external one caused to have a thicker thickness. To specify hydrostatic pressure we use paragraph 8.2.1 that is directly connected to MAWP. Now, the question is; should I use the new thickness to...
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I've performed a linear (eigenvalue) and non-linear buckling problem, and everything went perfect except for a question I couldn't find its answer to. The question was that when you applied a fraction of eigenvalues to your nonlinear buckling analysis, do you know exactly the magnitude of...
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I'd like to know if a pressure vessel that is designed according to ASME-SEC VIII-DIV-1 and a finite element analysis is performed for it to see the localized stress construction, does it needed to be approved by a professional engineer or not?
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I'm asked to duplicate the following problem. I don't know what steps I should take to simulate it. Please give me some guidelines!
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According to WRC-470, when we have a high temperature in the vessel, there are some methods to reduce the stress level occurring in the skirt-to-head junction including hot-box configuration and using slots to make the region more flexible. I am modeling a vessel on which the...
I modeled a simple cube and performed a thermal analysis on it. I prescribed an uniform surface heat flux on one of its surfaces. I made another model that all material properties and geometry was the same as the first model except for circular partition I made on the surface on which surface...
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I am going to apply a transient loading to a structure to evaluate its response for fatigue analysis. The transients are as followed:
Temperature difference: 45 to 59 degrees of Celcius
Pressure difference: 4.53 to 3.3 bar.
I defined 45 degrees of Celcius as the initial condition and the...
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I have encountered an issue when I was trying to simulate the fatigue of the internal equipment of a reactor. I'm wondering that I should do fatigue analysis for each part or for the whole assembly?
Because in the assembly, we have bolt loads and I am not sure if I should apply...
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I'm trying to replicate the Elastic-Plastic Analysis – Local Strain Limit of PTB series. I'd like to plot the following contour. I made a contour with the expression for limiting triaxial strain, but it's not the same as the contour in PTB. Can anyone tell me how to plot the same contour...
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I need a script named felbow.py.
Does anyone have it?
http://dsk.ippt.pan.pl/docs/abaqus/v6.13/books/cmd/default.htm?startat=pt05ch09s10.html
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I am running an elastic analysis according to ASME-Sec.VII-Div.2-Part 5. I want to check the hydrostatic test condition and make sure if the vessel met the requirements or not. In the stress limits, there are limits for Pm, Pb, and Pm+Pb. I'd like to know if it means that I should...
