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  1. Wazy01

    Modelling one geometry several times due change in one dimension

    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)...
  2. Wazy01

    Stress intensity factor of bonded plates

    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...
  3. Wazy01

    Crack-Bridging model for bonded plates (tension+bending)-Wang&Rose 1999

    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...
  4. Wazy01

    Crack initiation in metal

    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)...
  5. Wazy01

    transform the Slant crack model to straight crack model

    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)...
  6. Wazy01

    MSC! why I am getting Acoustic results instead fatigue!!

    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...
  7. Wazy01

    (frequency Hz vs Temperature ) in Constant amplitude cyclic test

    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...
  8. Wazy01

    Import partitioned surface

    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...
  9. Wazy01

    NX-Fatigue durability

    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...
  10. Wazy01

    Fatgue-MSC

    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...
  11. Wazy01

    System Error: HELP Please

    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...
  12. Wazy01

    Define block of load cases in fatigue--File attached

    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...
  13. Wazy01

    Durability/fatigue

    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...
  14. Wazy01

    Which software its FE model can be imported to MSC

    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...
  15. Wazy01

    Code for finding Critical plane/highest damage from FE results

    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...
  16. Wazy01

    FE modeling in Patran

    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...
  17. Wazy01

    Tie bonded surfaces

    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...
  18. Wazy01

    How to compare two models at same load please

    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...
  19. Wazy01

    Assembly the bonded-component Cohesive-element

    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...
  20. Wazy01

    Mass-scaling non-linear analysis

    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...

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