Stuck? 
support@mecway.com
support@mecway.com
Mecway
FEA
disla
About
- Username
- disla
- Joined
- Visits
- 2,018
- Last Active
- Roles
- Member
Comments
-
Hi Victor , As I have understood, first I need to compute the failure probability of each element by means of a volumetric integral on each finite element. The field to be integrated is a complex combination of the principal stresses. I don’t see t…
-
Hi DaveStupple, Victor, I’m struggling with the computation of the POF by means of a unique Script. I already know exactly what to do but I do not have skills with the API environment to build the script yet so I’m firstly solving it in Excel, pos…
-
¿Is there a way to obtain the volume of each element in an arbitrary solid model to build a custom formula with it? I’m trying to get it indirectly from available variables but I’m not finding the way. I think there is no way to sort the need of t…
-
Hi Dave, I’m also interested in your problem, and I have tried to implement this statistical approach. I think I have got some progress but there is a point I’m not really sure if it is properly working. Heaviside function is giving me values bigge…
-
Hi. These are my results after changing the force by pressure. I have also change in both the Poisson’s Ratio to 0.4999 just in case and to remove any source of discontinuity between elastic and plastic behavior. When computing with the Bilinear h…
-
Thanks Victor, I have an smile in my face right now. That seems a very plausible explanation. I will change force by pressure to see what happens. It would be paradoxical that I come from reviewing the concept of True/Engineering Stress some lin…
-
Thanks Victor, “Without load reversal”. That's the point. I'm doing some reads to see why is this happening. What it is also strange is why the compressive load&release end up on a different value of plastic strain than the one under tensile/…
-
I keep doing test to see what could be wrong and I have found that the solver seems is not taking Poisson's Ratio under consideration. I have redone the calculation again with Poisson's Ratio=0 and display show the solid is shrinking under tension a…
-
Hi, After some sleep and coffee here are my results. I hope I can express myself better. I think that Plastic Strain at the end of the Load/Release process should be the same and also Compression / Tension should behave equally, and they do not. I h…
-
Hi Victor , I have just found my source of error. I have been comparing Principal Strain 1 against Principal Stress 1 for the whole set of models. For some reason, under compression , the principal Stress 1 is not representing the same direction a…
-
Thanks, John, for your fast response and link. I think that isotropic and kinematic show their nature and differences when we apply cyclic loading or at least tension followed by compression or vice versa. In my case I'm just applying a load and re…
-
Hello, I have done a comparison between the different Plastic models available in MECWAY/ccx before going to more complicated geometrical models. Isotropic hardening & Kinematic Hardening introducing the exact same values for the True Stress-Tr…
-
Hello nwedding, In addition, an optional true stress – true strain curve for use in elastic-plastic finite element analysis can be wholly derived according to ASME_VIII_DIV_2 ANNEX_3D.3 Stress-Strain. There is an Example in the PTB-5-2013 4.6. Inp…
-
Hi Manuel, Mecway also has a very useful tool called "Open Cracks" under the view tree. It helps a lot to find nodes/elements that are disconnected.
-
Hi Dave, Regarding the disc positioning remember there is a nice phyton script done by John "Python script to create center node of circle between 3 points." Regarding the integration of both geometries maybe it is easier for the mesher if you p…
-
@Johan_S First of all I have to say in no way I’m criticizing or questioning your model. Your model is impressive !! My knowledge about this particular problem comes from traditional calculation of tanks under seismic actions. Any particular code…
-
There could be a workaround directly applying the hydrostatic pressure loads using the Heaviside function to exclude the empty side of the container. I have separated each load on internal and external surface to be able to check if they are correct…
-
I have found that my previous posts are only valid in particular cases which would not solve your more general problem. As far as I can see introducing two gravity loads do not manage them as independently. Hydrostatic pressure is distributed as if …
-
.
-
i7 4700MQ @ 2.4GHz RAM: 16.00GB DDR3-1600 Bolt Assembly Test.zip -1st run time March 2020 (CalculiX 2.16 PARDISO) : 5 Min 17 Sec -Actual run time October 2021 (CalculiX 2.18 PASTIX) : 1 Min 2 sec Thank you very much to all the people who has wo…
-
Wow, thanks. That’s much more than expected. I'm working on this example too and will tell you If I find an explanation for Pl+Pb+Q mostly and not Pl+Pb.
-
Good afternoon, Sergio, It's been a long time since this post but I would kindly ask you if you remember and want to share it how did you manage to solve the axisymmetric problem and extract stress linearization at the same time. It is only availab…
-
Thanks Victor, Nice and clever alternative. It works with density as thickness.
-
Thanks prop_design and cwharpe, I have also receive response from the Calculix forum. "above example are for truss element, so it does not required mesh to be refined. only use one element mesh betwen each joint of connected members. Spliting and …
-
Thanks Victor,
-
Edited. I have also posted in the ccx forum as it clearly seems a ccx issue.
-
Thank you 3rav. Another question. ¿Do you know if PROCESSORS in CCX_NPROC_STIFFNESS and NUMBER_OF_PROCESSORS refers to Logical Processors or Cores? Thanks
-
Hi, I'm completely puzzled regarding the windows variables I have to use to set/optimize the Pc/ccx performance. I have : CCX_NPROC_STIFFNESS NUMBER_OF_PROCESSORS OMP_NUM_THREADS My processor is an intel i7 4700MQ which according to Intel has: …
-
I have a similar performance than prop_design with CCX_PARDISO.exe but I think it is using all cores not just one. The point is that seems to be limited in the utilization% of each core. That limitation disappears with Pastix that goes full capacity.
-
Hi Bailey, ¿Is this a plane strain academic exercise? ¿Retaining wall of 30.5m maybe?. Seems very thick. I'm sure many people on this forum would be pleased to help you including me but ¿could you explain with some more detail what is going on in …
