Linear material vs non linear material + code compliance

[JJKi]

Hi,

I am currently running an ANSYS static structural analysis on the following:


SETUP

1. Basic Geometry (shown from top to bottom)
Pipe + weight on top
Neoprene Rubber Pad
Beam

2. Client requirement is to not have any plastic strain on the pipe after the weight has been applied on top of the pipe. This is the only requirement.

3. Right now all three are modelled as solid
Pipe - Linear material
Neoprene Rubber Pad - Hyperelastic Mooney Rivlin 2
Beam - Rigid

4. NLGEOM = ON because the rubber pad was to deform from flat block state to conform around the pipe face


QUESTION

1. So my thought process is that, since they do not want to have any plastic strain after the weight has been applied, if we are able to keep all von mises stress under yield after the load has been applied we should be in a good shape? Am I totally out for lunch?
2. Are there any ASME code compliances that I can refer this type of analysis to?


I am sorry if the question is too rudimentary. I just wanted to make sure that I was on right track. Thank you,

 

[TGS4]

What is the piping design code?

 

[JJKi]

CSA Z662, but the code states that it will accept design for both CSA B51 or ASME BPVC Sec VIII

4.3.12.2
Except as allowed by Clause 4.3.12.3, the pressure design of components shall be as specified in the
applicable component standard or specification. The pressure design of components for which no
standard or specification is listed in this Standard shall be
a) as specified in CSA B51 or the ASME Boiler and Pressure Vessel Code, Section VIII; or
b) approved by the company as being suitable for the pressures to which the components are to be
subjected, based upon an engineering assessment that includes a review of technical data and
historical service records.

 

[TGS4]

Ok - so you need to follow the design procedure in ASME Section VIII, Division 2, Part 5. So, follow those rules - there is sufficient explicit rules there to address your questions (BTW, it's much more complicated than you think).

 

[JJKi]

Sounds good, thank you.