Boiler Header stress calculation problem

Question

The header in the boiler always has more than10 tubes connected to it at one point，but now the autopipe just can create one node at one node.So how to creat more than10 tubes at one node？Or how to calculate the Panel stress for the boiler.

Mike Dattilio · Accepted Answer

Greetings, 
 Your last response was missing images. Please send the images again. 
 In the meantime, to help answer your questions: 
 1:What is the user SIF? Is it a coefficient? How to s pecify it ,I see there are so many option for it, which one should be choose? 
 
 Answer: 
 A user SIF is a user defined SIF value. If the user wants to override an automatic SIF value with their own. If the junction is outside of the automated SIF calculations user should specific their own SIF value. 
 
 There are a number of ribbon commands to specify an SIF, with a model opened in the program, click on the binoculars icon in the top right corner of the application screen, then on the "command search utility" that appears, type in SIF and select a line with "Joint Type and User SIF". Select help on this dialog to see details about this feature. 
 
 2: I do not specify a user SIF，I created a node A139 and then try to create all the followed node connect to it by change the origin point, but they do not connect to A139,they still connect by sequence. 
 
 Answer : 
 AutoPIPE segments are built by inserting a node point in space, and then add delta offset in the direction of the next node point. 
 Suggest to review the Points tab on the grids to understand the node sequence. Best to use the keyboard arrows to navigate segments. Make changes as needed.

3:The tube for the boiler header will be a circle as followed picture, is the available? 
 
 Answer: 
 Yes AutoPIPE has a feature to assist in generating a circular header. Important to remember, that branches can be easily connected on a straight portion of a pipe run, otherwise, you will need to the procedure here to insert a branch on a bend. 
 
 Conclusion, please see all the links here and here for information to help new users with learning AutoPIPE. The Youtube channel link has a number of great tutorials. 
 
 Regards, Mike Dattilio Design Analysis Engineering Group Senior Analyst Bentley Systems Inc =============================================================================

Mike Dattilio · Answer

Greetings, 
 Are you using AutoPIPE or AutoPIPE Vessel? 
 Regards, Mike Dattilio Design Analysis Engineering Group Senior Analyst Bentley Systems Inc =============================================================================

Mike Dattilio · Answer

Greeting, nothing is stopping you from modeling multiple pipe segments all connected to the same node point (ex. A00): 
 
 Suggest that you specify a user SIF at the junction point (ex. a00). 
 Question: how to connect all pipes at a signal node point/? 
 Answer: same as when connecting 2 segments to form a tee, on the next run dialog specify the "Name of Node" = name of existing node point on other segment, press the tab button on the keyboard, and press OK to close the dialog. The junction will be automatically connected. 
 Regards, Mike Dattilio Design Analysis Engineering Group Senior Analyst Bentley Systems Inc =============================================================================

Mike Dattilio · Answer

Greetings, 
 Please post this as a separate question/ discussion on the forum. 
 Regards, Mike Dattilio Design Analysis Engineering Group Senior Analyst Bentley Systems Inc =============================================================================

Boiler Header stress calculation problem

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