Re: Re: Stress calculation

Friends,

I wish to get your valuable opinion on the following.

I am using CAESAR II for Stress analysis.

In CAESAR II , Temperature Input is required on the Spreadsheet . As per my perception this is OPERATING Temperature and
NOT DESIGN Temperature.

Further, I need some help in interpreting the Code requirements of Temperature Input in CAESAR II.

ASME B31.3 Clause 319.3.1 says:

"Thermal expansion Data

(a) Values of stress Range.

Values of thermal displacements to be used in determining Total displacement Strains for computing the Stress Range shall be determined from Appendix C
as the ALGEBRAIC DIFFERENCE between the Value at Maximum Metal Temperature and that at the Minimum Metal Temperature for the thermal Cycle under analysis.

(b) Values for Reactions

Values of Thermal displacements to be used in determining the Total displacement Strains
for computation of Reactions on Supports and Connected Equipment shall be determined as the ALGEBRAIC DIFFERENCE between the Value at Maximum (or Minimum ) Temperature
for the thermal Cycle under analysis and the Value at the Temperature expected during installation."

From the above 2 sections (a) and (b),
  it seems that we should Input the Algebraic Diffrence between the Maximum Operating Temperature
  and
the Temperature (Ambient) during Installation   for CAESAR II Analysis.

Regards,

Balakrishnan

• Original Message ----- From: "Dragos Aron" <daron@oltchim.ro> To: <PipingDesign@yahoogroups.com> Sent: Tuesday, December 16, 2003 10:28 AM Subject: Re: [PipingDesign] Re: Stress calculation

> I also can help you with CAESAR II calculations.
> How can you send me the isometrics?
>
> Dragos
>
>
>
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Received on Tue Dec 16 02:34:00 2003