Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

3 questions about "Tunnel Excavation" example

Please login with a confirmed email address before reporting spam

Dear all,

I'm a little bit confused about some points in this example and would appreciate any help.

1- In this example, for initialization, we are using External Stress in solid2 and step#2 (from gravity analysis in solid and step#1), but solid2 again considers gravity! If we are using stresses from the gravity analysis in step1, shouldn't we remove gravity from solid2?! Having both External Stresses and gravity in solid2 does not double the response?

2- For initialization, we are just considering external stress?! What about displacement (strains)?

3- And finally, in the results part, everything is based on sol1 (Data/Data set/study 1/solution 1 (sol1). What about sol2? shouldn't "after excavation" results be based on sol2? If not, then what is the point of having sol2 in te drop-down menu of Data/Data set?

Thanks in advance for your help. Regards, Ramin


0 Replies Last Post 04.06.2018, 12:08 GMT-4
COMSOL Moderator

Hello Ramin Ziaei

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.