WF5 Mechanica: new features?
WF5 Mechanica: new features?
(OP)
I'm trying to find out what new features WF5 has for Mechanica and Advanced Mechanica.
Most importantly, can it do contact and large deformation in the same analysis (not possible in WF4)?
Also, can it do multi-pass adaptive in a contact and/or large deformation analysis?
Most importantly, can it do contact and large deformation in the same analysis (not possible in WF4)?
Also, can it do multi-pass adaptive in a contact and/or large deformation analysis?
RE: WF5 Mechanica: new features?
The combination of LDA + Contact + Plasticity + ... is something being worked on (amongst others) for WF6. Stay tuned!
RE: WF5 Mechanica: new features?
Thanks again, David
ps. Sounds like you work at PTC...(just fyi to pass along) on the ptc website, when I search the "Enhancement Details" section for WF5 Mechanica & Advanced Mechanica, it doesn't find anything.
RE: WF5 Mechanica: new features?
Yes - the what's new details on the website are temporarily missing, the web content people are updating some details so you've caught it at a bad moment!! Thanks for pointing it out though...
OK, there is no *technical* reason why we can't offer multi-pass adaptive with LDA, but hopefully the following sums it up:
First, single-pass has been proven to be faster and more accurate (i.e. efficient) for the vast majority of problems, and has been steadily improved release over release. The new convergence targets in WF5 further bolster this (as it helps overcome a previous objection to using SPA where the area of interest is not necessarily the hottest stress spot..)
Next, for convergence of a nonlinear solution we need to take control over time steps, cutbacks, line searches (Newton tuning) in the solver, and we chose (because of the above point) the single-pass method to optimize for such nonlinear solutions. By just switching to multi-pass the tuned algorithms could be destabilized as the p-levels are successively raised - resulting in long solve times.
Again, there is no technical reason why we could not optimize the multi-pass algorithms separately, but in the interests of getting as much new stuff out to you, and for the fact that single-pass is our 'preference', we have disabled MPA for LDA.
RE: WF5 Mechanica: new features?
So for single-pass adaptive, is there a way I can estimate errors in the solution?
Thanks, David
RE: WF5 Mechanica: new features?
RE: WF5 Mechanica: new features?
LDA = Large Displacement Analysis (nonlinear geometry)
RE: WF5 Mechanica: new features?
Plus, it seems natural that you would want LDA for shells. Given that thin geoemtries are most likely to experience large deformations.
I had a recent project invovling thin geometry being modeled with shell elements and I was prevented from using Mechanica because of its lack of support for LDA with shells.
Steve
RE: WF5 Mechanica: new features?
But suffice to say, we are steadily working through a long list of nonlinear enhancements to Mechanica (both Structure and Thermal). You've seen the fruits of some of this labor in WF5 - see the 2nd post in this thread for some details. Unfortunately we have to stage them into the code in order of priority and other technical considerations. I don't want to sound too vague (!!) but what you mention is certainly on this list!
RE: WF5 Mechanica: new features?
STeve
RE: WF5 Mechanica: new features?