Ok......
In the mean time I've been digging around in text books and found that for a give meridional moment M for a cylinder of thickness t the meridional bending stresses are given by 6M/t^2. Problem solved.
Apologies I spelt pipe wrong in the title!!
Dave
Afer some more thought...
I think I was overcomplicating this: I simply use the well known formula:
S = M r / J
S: stress at a fibre at a distance r from the origin
M: Moment
r: Radius
J: Polar Moment of inertia
Now, I have moments about the mean radii of the cross section (see image), will...
How does one hand-calculate the varying through-wall stresses of a pipe due to an axi-symmetric meridional moment ie flaring? I have no clue where to start for this one.
Thanks in advance
Dave
TGS4
Thanks for the sanity check. Though not sure how to work out shears of a pipe due to meridinal bending stresses... I'll have a look.
dhenger
Just for my benefit lets assume differences in structural and thermal expansion is not neglible. The other option would be to assume they are...
I think I can calculate the resultant inner/outer radii and then calculate the resultant stresses based on the known displacement (see attachement). Right I'm going to shut up now... thanks in advance...
2. Displacements will be larger for the stiffer material
3. Displacements will be smaller for the less stiff material
Apologies; the above points are in relation to the displacements for each pipe at the junction if I assessed each pipe separately.
Dave
I have two pipe ends of the same diameter that are welded together. The pipes being made from different materials having different Young's Modulus (E) and different Coefficients of thermal expansion (a). There is an internal fluid pressure operating at a high temperature.
I want to assess the...
Oh you were referring to FEA with regards to lifting equipment... sorry I wasn't clear, I have not used FEA on any lifting equipment so far... as yes its fairly simple to substantiate the designs, I use it for other complex shaped products.
Appreciate your book suggestions though! And again a...
SNORGY
Having no welds does not remove the ability of something to move. Most lifting equipment can be designed ensuring load paths travel through sections, fasteners, etc. We were designing some one off lifting equipment, of course the off the shelf slings and RHS use seemless welds, however...
A very good strength of materials book by Timoshenko is suggested by everyone. However, there appears to be 'modernised versions', for example:
Strength of Materials book - Timoshenko (3rd ed)
Mechanics of Materials - James M. Gere, Stephen P. Timoshenko 5th - A 'rehash' (want for a better...
JohnRBaker:
Thank you for those your suggestions.
Sorry, when I mean FEA its not so much on how to use it, what I mean is the theory behind it, I don't think ANSYS really publish such texts, mostly the extensive help documentation explain how to do something or am I wrong?.. Again, I've done...
I'm aware that similar request have been made (and my apologies), however, I'm trying to cater the question with regards to my particular role to get more appropriate recommendations.
Dave
OK I've found posts something similar to this in the structure forum and realised that its littered with civil structure engineers. As most suggestions are to do with concrete, wood and foundations. Now I'm in the right place!
I'm a mechanical stress engineer in the energy industry and thus...
Thanks for your response, that's my problem, I never purchased any books, only the odd course I did had a textbook as 'compulsory'. When I did buy a book i never used it, so only used the material provided by the professors; and I don't have all my notes to provide any book recommendation.
My...
Hi,
Question: Can you make any suggestions of entry level books that will help me to follow a career as a Stress Engineer?
Background:
I've been in the nuclear industry now for 1.5 years (Graduate role) and tried lots of job roles in Mechanical Engineering; Manufacturing, Safety, Stress and...
