there is no way to solve this problem as cloud non linear problem..

[andres_urrutia]

I've bought this aplication to solve my nonlinear problems, but there is no way to solve them.

Error: INSUFFICIENT ELEMENT STORAGE SPACE ALLOCATED               
Cause : The number of internal elements generated exceeded the space allocated. This error will
              occur during the generation of slide line or surface contact segments if the
              MAXADJEDGE model parameter is set too low. The default AUTO setting will set
              MAXADJEDGE to 50 if SLINEMAXACTDIST is set to AUTO, and zero if set otherwise. A zero
              setting will attempt to allocate the required space but may overestimate the storage
              requirement and result in an S1110 memory allocation error.
Action : Increase the MAXADJEDGE setting in increments of 10.

I've attached the model if someone is interested 

[John_Holtz · Accepted solution]

Hi @andres_urrutia 

As indicated by the warnings/errors during the analysis, there are too many contact elements. (I think it is referring to the number of separation and rough contact elements. The bonded and sliding contacts should not be contributing to the total element count.)

Have you tried any of these things to reduce the size of the model?

1. Split the model in half and use symmetry constraints on the cut faces? This will reduce the total number of elements in half.
2. Use "Unsymmetric" penetration type instead of "Symmetric" for the  separation and rough contacts?
3. Specified a "Max. Activation Distance" for the contacts so that contact elements are only needed where the parts are located? In other words, the parts are not going to slide very far, so there is no need to create contact elements between one clamp and the nodes on the tank half way around the perimeter. A good choice for the maximum activation distance is 20% larger than the mesh size at the contact region.

If the bonded contacts are adding to the total element count and the warning message, you can combine some of the bodies together so that contact does not need to be defined. Of course, this assumes that the bodies are the same material and can be combined. If the materials are different, then your use of the bonded contact is the correct method.

[John_Holtz]

Hi @andres_urrutia 

I wanted to check if you had tried any of my suggestions and what the outcome was.

I did some more checking on the analysis. The model has 362000 solid elements. When I removed the separation contacts, all of the other contacts created a total of 4.1 million elements. In other words, the number of contact elements greatly outnumbers the number of solid elements. I am not able to generate the total number of elements in the model when the separation contacts are included, so I do not know how large it gets with everything.

[andres_urrutia]

sorry. I couldn't try your details because I was in a hurry. now I'm Reading and i didin't know everything about the definition of max distance of a contacts. I need to read something more about contacts.

this kind of models are neccesary to be done with non linearity contacts due to the configuration in the real world and the need to get (in this case) the máximum value of tensile forces forn anchor bolts.

thank you.

[plafortune]

Hi John, 

Fusion 360 don't give access to MAXADJEDGE  parameter? 

Thanks 

Pierre 

[John_Holtz]

Hi @plafortune 

That is correct. Fusion does not provide access to the MAXADJEDGE parameter.

Fusion uses the Nastran solver, and the Nastran solver uses hundreds of parameters to control different aspects (of the two dozen different analyses that Nastran can analyze). A few of the parameters are accessible from a dialog in Fusion, but many of the other parameters are not accessible.

John