AutoPIPE Wiki 01. How to change Input thermal expansion coefficients for AutoPIPE analysis?

01. How to change Input thermal expansion coefficients for AutoPIPE analysis?

Applies To
Product(s):	AutoPIPE
Version(s):	ALL;
Environment:	N/A
Area:	Grids
Original Author:	Bentley Technical Support Group
Date Logged & Current Version	Nov. 2016 10.01.00.09

Problem:

How to change Input thermal expansion coefficients for AutoPIPE analysis?

Solution:

There are 3 methods to adjust the Thermal Expansion coefficient from the default values found in the material library.

Method #1: Change the value on the "Press/Temp/PipeID" Input grid.

1. Select Segments of piping where the coeff. will be updated.

2. Press the toolbar button to "Hide Un-Selected Segments".

3. On the input grid, select the "Press/Temp/PipeID" tab, furthest Left tab.

3. On that tab, locate the Case ,1 - 100, whose's coeff values will be updated.

4. The field maybe grayed out. Un-check the Auto check-box on the left side of the value will change the field so a new user value can be entered.

5. Change the values as needed. These new values update the model database immediately.

Method #2: Change the value using the Modify> Operating Pressure and Temperature.

1. Select the piping where the coeff. will be updated.

2. Select Modify> "Operating Pressure and Temperature" command

3. On the dialog screen locate the temperature Case, 1 - 100, whose's values will be updated.

4. Scan down the aforementioned column until the row for Expansion values (the field maybe grayed grayed out) and un-check the "Auto" check-box on the left side of the value will change the field so a new user value can be entered.

5. Change the values as needed and press the OK button to apply the new setting(s).

Method #3: Update the default values in the Material Library.

See online help for modifying / updating the material libraries and change the default values as need in the SRC files before compiling them into LIB files to be used with AutoPIPE.

Note: If using Pipe Properties Material = NS, the user is responsible for manually updating all fields of data on both the Pipe Properties Dialog and Press/Temp/Pipe ID dialog as needed. There is no AutoPIPE command to update any material library data that is set to manual input.