Recent content by meolo2002

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...

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 ;)

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...

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...

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...

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...

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...

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)...

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

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

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...

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

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

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...

-__________- 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