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I predominantly used ansys help for this. I also used some other books but they are in Russian, and I am not sure whether they will be of any help to you. In workbench creating contact pair should be even easier then in APDL, since you will just graphically pick the faces you are interested in.

Have you tried using contact(bonded) for example?

DP model I suppose it does not. To conduct something like this you will probably have to combine other models, you probably should check furs on model, but I have my doubts on it. I suppose that you can do it in workbench, but you will still need to use command snippets to include more complex...

You should probably look into extended drucker prager material model for soil behaiviour. Interaction can be probably realised by frictional contact. The boundary conditions on the soil will depend on the analysis you want to perform, generally you just want to constrain the expansion or limit...

What kind of rotation do you mean? Do you want to rotate the FE model or do you want to apply rotation as an external boundary condition. If you want BC. You could probably try calculating new node coordinates and then apply them as new BC, (but it depends on the element type (impossible for...

you should tru *mwrite command. *MWRITE, evalX, C:\User\Documents\Eigenmodes\evalx\outputdateiXmode1a, txt, , JIK, 12, (12F10.5) or you will have to add *VWRITE,evalX(1,1),evalX(1,2), evalX(1,3),evalX(1,4),evalX(1,5), evalX(1,6),evalX(1,7),evalX(1,8), evalX(1,9),evalX(1,10),evalX(1,11)...

See chapter 3.14.1 http://www.ansys.stuba.sk/html/guide_55/g-bas/GBAS3.htm You can use these commands even if they were removed from a newer versions of manual.

Create spherical locaL coordinate system, located at the node around which you desire to find other nodes. select new nodes based on the radius. Commands Local.... Nsel, s, loc,...

You can try *dmat, stif_tenz, d, import, ... Check rest in the help, look for emat file you have to have the element stiffness tensor you want to be the one selected. http://xansys.org/forum/viewtopic.php?p=93557 Read this for practical application example.

Good day everyone. I am trying to create my own topology optimisation routine in Ansys. At the moment I am trying to implement the filter proposed by Bendose and Sigmond in their 88 line matlab code. To do so I have to create a matrix n_elem x n_elem, filled with center distances between element...

yes you are right. I forgot alls command before the *enddo statement. Probably not but it depends on many factors that are present in your model. Numbers are very unreliable in general, since if you would like to use your code in a different model you can not be sure that the numbering goes...

If the numbers go as you say then: just Sec_num=lsnext-10 And use this parameter You can also try this: Create an array With line numbers in first column and section numbers in second row. Then just use array(parameters as an input for commands inside a *do loop. Are you sure that lsnext...

use this command for section assignment. LATT, MAT, REAL, TYPE, --, KB, KE, SECNUM probably you should do *get,LCOUNT,lines,,count LINENEXT=0 *do,ICOUNT,1,LCOUNT linenext=lsnext(linenext) lsel, s, line, , linenext LATT, MAT, REAL, TYPE, --, KB, KE, SECNUM !lesize lmesh,LINENEXT *enddo

None. Maybe it is cycle between all the nodes to find max value?

Yes, you can use Usermaterial, but it is a complex task. You should first try material models that are already present in the software.

Probably something is wrong elsewhere, with constraint or load application thus there can be problems. But you should be more specific with your problem and the model you are solving.

On the basis of previous detailed research a simplified method to estimate robustness of CFST column frames can be derived on the basis of simplified fiber-beam models. I suppose you can do it with VEXT command, for more complex results you will probably need *do cycles. It really depends on...

As I said your task is to complex for your license type. Try decomposing it into several, each part of your assembly - different task. Also consider simplifying geometry and mesh of pistons and belt they are too dense for static analysis. But I suppose that the best results can be achieved if...

explain the problem you are trying to solve: make some print screens so it will be possible to understand what is that you try to compute.

Your ansys is educational. Thus there is a limit on how many elements/nodes you can use in one solution. So the problem with your task is that either your mesh is too dense or the task is to complicated to be solved with the limited version. Or your approach to the modeling is incorrect.