I have modeled riser and input guide clamps by guides with gap 5 mm preventing movement lateral movement, whereas the pipe can move freely in the vertical direction.However, I extract the force load at support in gravity case, I saw that there are force in vertical direction and I can't imagine where they are from.
The ignore friction in gravity case is checked and performed in non linear analysis
Please ignore all individual load cases and only concern yourself with the operating conditions results on the guides.
Does the support have any load on the supports for the operating condition?
If yes, then perform a load sequence study on the node point's displacement for each load case per the combination / analysis summary settings.
Regards, Mike Dattilio Design Analysis Engineering Group Senior Analyst Bentley Systems Inc=============================================================================