buried

[albertos]

hi to all I wanted to ask what mesh settings and what settings are most suitable, to solve linear static problems on complex pieces generated as welded pieces on sw 2009.
I have great difficulties as it appears to me in several cases unsuccessful solver, missing constraints, when these are undoubtedly set well. my feeling is that it does not keep the contact between the individual parts of my welded frame that turns out to be a parts not an assembly!
You know how to help me?

 

[AMinati]

I usually work this way:

if the axieme is sufficiently simple to use it directly (or simplified for any symmetries etc.) and carry out various studies with simulation;

Otherwise I create a solid model (part or axieme type) by simplifying it where possible. use part if I do not need to study particular contact surfaces (all like welded head to head). together if I have to study contact surfaces without computation and similar. (obviously in this second case the times of elebortion are measured at nights and not at minutes;

if the axieme is composed of sheet metal pieces (one or two dimensions much greater than the third, the solid solutions that are obtained are sometimes approximated moooltooo, not to say worse (distortion of the elements). In this case I create a model through surfaces and study the shell model. in this case the results are a little rougher but definitely reliable.

as always, however, we must pay close attention to the assumptions, constraints, loads and simplifications adopted, the congruence of the units of measurement adopted, etc.

the risk of taking mastodontic chants is always around the corner... .

However, I always control some things, such as binding reactions with what is derived from theory.


aminati


p.s. attention to avoid individuality points of the model, check the lability of the model and the constraints in general.