Hello, I am trying to create a mnf-file using the Ansys-Adams interface of Ansys via the GUI. I built a simple model using Beam188 elements. I defined a section with a hollow rectangle. However, I am not able to create a mnf-file when using a hollow rectangle. Does anybody have experience with such issues? I use the following code to create and mesh my model: FINISH /CLEAR /filname,test_mnf ! Units: N,m,kg,s /out,test_mnf,out ! Geometrie definieren /prep7 ! Element type et,1,188,0,,2 ! Beam element ! Material mp,ex,3,2.1E11 ! N/m2 mp,prxy,3,0.3 mp,dens,3,17000 ! kg/m3 ! Geometrie k,2,-1,0,0 k,3,1,0,0 l,2,3 lesize,1,0.1 ! Cross section sectype,5,beam,hrec secdata,1.1997,1.2683,0.010,0.010,0.015,0.015 ! Line attributes lsel,s,line,,1 latt,3,100,1,,,,5 alls lmesh,all After this code I use Solution->Adams Connection->Export to Adams. I pick the two edge nodes, select a number of modes to extract (e.g. 6) and start extraction. I then get an error message saying "The number of modes expected (14) does not match the number found (12). Most likely, the model has errors or there were more modes requested than exist. Please review the prior modal solution for warning". The point is I can perform a modal analysis with this model and get 20 modes, so this should be fine. I also can create a mnf-file when I use a RECT section instead of the HREC section. So I am very confused and appreciate any tips or help on this issue. Best regards, Simon Brauer _________________________ P.E. Concepts GmbH i.A. Simon Brauer Mechanical Engineering