G'day all,
What is the common practice among finite element users when you have to build a number of models of similar geometry but with one changing parameter.
For example; Modeling specimen with varying crack length. DO I have to rebuild all the model (geometry, partition, meshing, analysis)...
G'day All
I hope some of you in this forum has the knowledge of the work of Wang&Rose. My question is regarding the article 'A crack bridging model for bonded plates subjected to
tension and bending'by Wang&Rose 1998.
Wand&Rose presented two methods for estimating the stress intensity factor...
G'day All
I expect & hope some of you in this forum has the knowledge of the work of Wang&Rose. My question is regarding the article 'A crack bridging model for bonded plates subjected to
tension and bending'by Wang&Rose 1998.
Wand&Rose presented two methods for estimating the stress intensity...
G'day all,
There are different definitions for crack initiation size in the literature. I run into N.E. Dowling papers (and his book) who went through this topic
However for the same material, and the same notch size (radius of curvature), Does the crack initiation size changes under (a)...
Hi
for plate with slant crack loaded uni-axially, If we want to simplified the case by transforming the axis of loading along the axis of the crack and re-modelling the case as plate with a straight crack under tension(remote Stress*sing(angle)^2), and shear (remote stress*sing(angle)*cos(angle)...
Hi
I run an static analysis for my model successfully. Then I imported the inp file to run fatigue analysis.
at reading the results ..start getting continuous message that the Node ID xxx are missing --etc
when ignore the message, I cannot find the fatigue results, instead I am finding...
Hi
In axial fatigue test usually argued using specific frequency. the Q always Why did you use this frequency ? if that frequency could affect the temperature of the sample
ASTME606 states that "Higher load frequencies in the range of 20 to 35 Hz can be used to shorten the overall test time...
Dear all,
I have my model which is 2D needs partitioned and I already partitioned it in NX. when import it to Patran. I lose partitios and get only the whole surface
Is there a way to import the surface with it is divisions. To be clear it is not parts, but its a surfaced which divided as...
G'day
I have few questions have not found answer to them on the help manual
what is the fatigue damage direction results in NX Durability ---it is unit-less so it is not the direction. We can show the damage location and the life but it is so much useful if there is indication about the...
Hi
I chocked after month with MSC practice, just found the crack growth analysis
I cannot see where the crack and in which direction is propagated and no mention if there is a way to deal with KII if exist
when we define the initial crack --where it is location --well might be the software...
Could you please help with the following error
Imported input file from Nx-Nastran then run static analysis , it worked
Now I an doing fatigue analysis a-N method. There is no fatigue results--even the program run
the op2 shows only the static results. with no fatigue
the f06 shwoa the...
Good day All,
I want to input variable load Time history to define fatigue loading in MSC-Partan for S-N,e-N analysis. My load is repeated blocks each blocks (Please see the file shows the loading illustration) has 2 time history (1st sine wave of o.5 amplitude last 100 cycle, and the second one...
In NX there is a good chance to estimate the life of any component using the durability application in NX Nastran.
You can run the solver using the linear analysis results or the nonlinear results (sol106) by checking use Non-Linear Results' under 'Solve Options'.
However, when I combined the...
Good Day All
I need to use the MSC fatigue emebedded solver. Also, I am not familar with Patran enviroment to build a model. Can I import a FE model (geometry and the desgined mesh) to MSC Patran so I can run the MSC fatigue solver, Please? I saw that Patran can import geometry file but what...
Good day all,
Does anyone have passed through and know if there is a code has been written to calculate the critical plane/plane with highest damage (whatever the criteria is) from the FE results. I know there some has written a Mat lab code for this purpose but I could not get access to any of...
Good day all,
As I need to use the MSC Nastran code, I try to build my model (meshing) in different software other than Patran. As my model kind of complex (need partition to control the mesh refinement, 0.02mm in 8mm thick palte) and I am new to Patran I do not know what is the best procedure...
Hi
What is the best war to tie bonded surfaces like meatal-plate bonded by adhesive to another plate?
I am doing stress analysis no focus on damage or so on.
when I used tie constrain surface to surface, the results do not make sense. Also, you can see the stresses is not continuous on the...
Good day all
I have run 2 models; the first plate with hole, the second is the same plate geometry but attached on one surface side to 2 other solid plates so the stiffness at the second higher than the first.
we need to compare the stresses at the hole for the 2 models. we use displacement...
Good days Friends
I am studying the cohesive element in an assembly model.
I did a simple model to investigate a bazar results I got with my model but it's still problems there without a clue or explanation where I fall.
the model (small size for fast check and run)
3 components of different...
Good day friends
I am running non-linear analysis. I have a quasi-static load applied to the edge of the model, non-linear material. and want to read the strain at a specific location at the model.
The running time is so long. and therefore I am looking for a solution. I have been advised to...
