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Thank you all for your inputs. This is a great forum. The suggested approach with a V-notch may be a way forward. Some further concerns: -First, as I understand, it will require a radius to be set at the sharp corners. In DIN 743 (“Calculation of load capacity of shafts and axles”) a...

Thank you for your inputs but the problem is not how to evaluate the strength at the side (Where Kt=3.0). The problem is how to evaluate the bottom of the hole at the sharp notches for which no stress concentration factor can be calculated. BR/Micke

Hi, Is it a good idea to drill a hole in a shaft subjected to rotating bending fatigue load? Just kidding. However transverse holes in shaft (radially drilled holes) exist and need to be assessed in view of fatigue strength. My question is about blind holes. Hence holes with a limited depth...

Hi I am verifying the strength of a thin-walled cylinder that is subjected to hydraulic pressure. The design is not strictly ruled by the pressure vessel code. However since there is no other applicable code Annex C “Design by analysis - Method based on stress categories” of EN 13445 is applied...

Thank you for your inputs! I will look through -8 and -2 as you indicate. I think your idea is correct. I found this: https://ec.europa.eu/docsroom/documents/41641. Page 28 says "Excluded from PED" ... "fluid power actuators (e.g. motors, cylinders, …)" BR/Mihe

Hi, I am designing a hydraulic cylinder to comply with European pressure vessel code EN 13445. The sealing casing will if possible be of copper-aluminium alloy EN1982 CC333G. The seal and casing is subjected to the internal pressure. I can not find CC333G or any other copper-aluminium alloy in...

Hi, Thank you for tour reply! I do not have access to BS or PD. I have started to look into the details of Annex G/GA. BR/Micke

Hi, I intend to verify a component, including a bolt joint, according to EN 13445-3 Annex C. My concern is how to show that the bolt joint fulfill the requirements according to EN 13445-3 Annex C. I am familiar with traditional bolt joint calculations for example according to VDI2230. The bolt...

I will try to answer my own question. Quote from https://www.eng-tips.com/viewthread.cfm?qid=348605 : “I only have ASME Section III handy right now, but the definition it gives (NB-3213.10) is below. "Cases arise in which a membrane stress produced by pressure or other mechanical loading and...

Seems my question is similar to this topic: https://www.eng-tips.com/viewthread.cfm?qid=348605

Hi, I am studying EN 13445 Annex C: Design by analysis - Method based on stress categories. Regarding primary local membrane stress (PL): ”At discontinuities, primary membrane stresses in shells are classified as local if the equivalent membrane stress exceeds 1,1 times the nominal design...