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  1. meolo2002

    Contact test with a cantilevered beam

    Hi to everybody, i'm trying to perform a simple contact test with a cantilevered beam with a stopping bar (see the picture). This test works well for isotropic material, but in the case of laminated composite (plyes are orthotropic 2d) the contact doesn't works and plate goes down over the...
  2. meolo2002

    Patran scripting with python

    Hi to everybody... i know that some MSC products allows scripting with Python code... Is this possible with Patran also? I can't find anything about it... Thank you for helping me, as ever ;)
  3. meolo2002

    Moment distribution along a beam

    ok... if this will be outline with 1D element i could simply make a spatial field and apply the force on the nodes ( that repret center of shear in cbeam). ok. but with shells ? maybe i have to think in term of strains on each section...
  4. meolo2002

    Moment distribution along a beam

    Hi to everybody I've a beam with a composite cross section with the lengh in x direction. The beam is oultined as shell elements. I would apply along the beam a flexural moment depending on x coordinate. In few words, you can imagine a ship where the difference betw buoyancy and load generate...
  5. meolo2002

    nonlinear buckling with restart

    still having problems... i think material properties are ok but i've found this error: *** SYSTEM FATAL MESSAGE 3034 (LNNHERR) INTERNAL FAILURE IN THE LANCZOS PROCEDURE: M-ORTHOGONAL QR PROCEDURE FAILED TO CONVERGE. PROBABLE CAUSE: MASS MATRIX IS INDEFINITE (MODES) OR STIFFNESS...
  6. meolo2002

    nonlinear buckling with restart

    ok i've overcome that issue with command mem=0.25Gb, so about 250 mb in this case. Now another prolbem cames out: *** SYSTEM FATAL MESSAGE 7340 (LNNHERR) PROCESS ERROR REPORTED BY SUBROUTINE LNNP2CD (IER= -725) USER INFORMATION: NUMBER OF COMPUTED EIGENVALUES EXCEED ALLOCATED...
  7. meolo2002

    nonlinear buckling with restart

    Thank you very much for your reply... I've learned a lot!! I've still some problems... i've performed another simply test with a cantilevered plate (solid) used PARAM,BUCKLE,2 ( i've found an integrated option in subcase parameter) made a comparision between nlsolidb and mine and main differeces...
  8. meolo2002

    nonlinear buckling with restart

    hi to everybody... i've some problem with a simple test of a cantilevered beam subject to a compression... the body is made by a solid cylinder. i've preformed nonlinear static analysis at first then restarted from loadstep 5 i get the following error *** USER FATAL MESSAGE 4512 (CASE02)...
  9. meolo2002

    Cohesive Zone Modeling

    Sorry, ive seen this reply only now .. thank you for your reference .... it's very useful!
  10. meolo2002

    Rotating force

    i'm a stupid [2thumbsup] solved by splitting in two components ;)
  11. meolo2002

    Rotating force

    Sorry about writing about it again, but reply does not work. I want to apply a time radial rotating force to a node. Every 3 seconds the force turns of 360 degs about the node. To give an idea the field should have a similar formula: X=F*sind(360/3*'t) Y=F*cosd(360/3*'t) Z=0 i've tried to...
  12. meolo2002

    Cohesive Zone Modeling

    sorry for the late... i had no time for reply... Another question... why do you use prismatic elements for cohesive??
  13. meolo2002

    Cohesive Zone Modeling

    Yes, of course 've requested master/dball No news good news... scr=post doesn't works... the problem remains :(
  14. meolo2002

    Cohesive Zone Modeling

    The problem is that even if i change the Cohesive energy of the glue, the solution ( in particular the strain in the glue)doesn't change at all. In addition i can not attach the MASTER result: the following error message is visualized: $# An internal error occurred when retrieving Direct...
  15. meolo2002

    Cohesive Zone Modeling

    -__________- i mean helements break, like in VCCT (but without the calculation of direction of the crack)... Anyway how i can determine if some elements have a damage? Thanks
  16. meolo2002

    Cohesive Zone Modeling

    Hi to everybody, i'm trying to do a simple test on cohesive materials. The model is composed by a cantilevered beam made by two layer of steel glued together by a layer of glue. Working units SI,mm Plate dimension lenght 500mm width 100mm thickness: steel 10mm, glue 5mm, steel 10mm. Type of...
  17. meolo2002

    two questions: parametric sweep and constrain in 2 direction

    Hi to everybody... sorry to bore you in this period with a lot of questions.... I've two distinct problems: [ol 1] i need to perform an analisi on solid mesh made with sweep extrusion.. but i want to investgate the influence of the tickness of the sweeped elements on the structure... i know...
  18. meolo2002

    spatial field

    sorry guys... problem solved leaving 0 the second and third components
  19. meolo2002

    spatial field

    I've also another problem.. i've to set a radial nodal force on an hald of a cylindre... I've created a cylindrical reference sys on the center of the base of cylinder, R axis on 0° of the cylindre and T along pi.greco/2. the value of the field is 1 R 2 mth_sind(R) 3 Z but the result is not...
  20. meolo2002

    Help warning 4124

    I've reached the MSC assistance..it's a warning of few importance that don't have influence in the calculation

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