Moxica23
Mechanical
- Aug 9, 2012
- 1
Hi !
I am trying to model a crack that propagates through a matrix in which I have a sferical inclusion (made of different material than the matrix).
First of all, I tried half a day to find a way to insert that sphere into the matrix in order to act like an inclusion (I mean to have cohesion with the matrix).
My main idea is to make a spherical hole (the same size like my inclusion) and after that move that inclusion into that hole, but I don't know how can I manage to have the surface of the particle "glued" of the surface of the hole.
Secondly, I tried to model a crack in a "clean" part (without any inclusions). The second half of the day I tried to have that crack propagated. I think I followed all the steps that I found in the user manual, but the crack doesn't want to propagate. First I tried with a seam crack - this type is not to be used when we want crack propagated (or at least this is what I found later in manual). After that I tried to create a cut feature of the matrix body part, in the shape of a semielipse. I also tried to make the cut by extruding a very narrow triangle. I choose the option in which the crack is indicated by the user, I picked up that surface resulted after the cutting, but when I tried to run the analysis, it sais that it cannot find the crack tip. Finally, I tried to let it find the crack tip by itself (by "seeing" where are the maximum stresses") but, again, no crack propagation.
I must say that I checked to have "on" the options:
Allow crack propagation (in the create crack menu);
Both PHILSM functions that you can find in the Field Output Request.
The third problem is that now in the Field Output Reques I cannot find anymore any of the PHILSM functions. I think those functions are available after I set some settings, but I don't understand which ones.
I am tired and because of that please excuse any possible language mistakes. I hope I manage to show clear enough my problems, but if not and if anyone needs more details, just let me know.
Kind regards,
Ciprian Atanasoaei
I am trying to model a crack that propagates through a matrix in which I have a sferical inclusion (made of different material than the matrix).
First of all, I tried half a day to find a way to insert that sphere into the matrix in order to act like an inclusion (I mean to have cohesion with the matrix).
My main idea is to make a spherical hole (the same size like my inclusion) and after that move that inclusion into that hole, but I don't know how can I manage to have the surface of the particle "glued" of the surface of the hole.
Secondly, I tried to model a crack in a "clean" part (without any inclusions). The second half of the day I tried to have that crack propagated. I think I followed all the steps that I found in the user manual, but the crack doesn't want to propagate. First I tried with a seam crack - this type is not to be used when we want crack propagated (or at least this is what I found later in manual). After that I tried to create a cut feature of the matrix body part, in the shape of a semielipse. I also tried to make the cut by extruding a very narrow triangle. I choose the option in which the crack is indicated by the user, I picked up that surface resulted after the cutting, but when I tried to run the analysis, it sais that it cannot find the crack tip. Finally, I tried to let it find the crack tip by itself (by "seeing" where are the maximum stresses") but, again, no crack propagation.
I must say that I checked to have "on" the options:
Allow crack propagation (in the create crack menu);
Both PHILSM functions that you can find in the Field Output Request.
The third problem is that now in the Field Output Reques I cannot find anymore any of the PHILSM functions. I think those functions are available after I set some settings, but I don't understand which ones.
I am tired and because of that please excuse any possible language mistakes. I hope I manage to show clear enough my problems, but if not and if anyone needs more details, just let me know.
Kind regards,
Ciprian Atanasoaei