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...as you desire. In "node(x,y,z)" replace x,y,z with global coordinates of node for which is displacement value being applied. freq = 2.7414 *dim, values,,1560,2 fini /sol antype,4 *do,i,1,1560 time , values(i,1) nsubst, freq/20,freq/200,freq/20 d,node(x,y,z),,values(i,2),,,,ux...

Hi, material properties you can change via MPCHG command (see ansys manual), real constants you can not, but what about to use some trick with EKILL/EALIVE commands - you can define two elements in coincident location with diferent real constants. On the beginning of analyses first element is...

Hi, i have not performed any electrical problem so far, but i think you can use do-loop as well : /sol inc = time/n *do,i,1,time,inc y=A*sin(wi+teta) ...apply y solve *enddo Regards, lubo

Hi Alex ! yes, this fully solved my problem, thank you ! lubo

...some time ago. Now i am thinking to create an animation over these pictures. With ansys help i created a following code : /SEG,DELE /SEG,MULTI *DO,T,1,288 /TXTRE,FILE,88,'JOB_%T%','PNG',,2 /LSYM, -1.0, -1.0,, 88,, 1 /REP *ENDDO /SEG,OFF ANIM,288,1,0.3 in the code i set delay between...

Hi Alex ! Yes, i made a mistake - only 7 files. I think that this parsav/parres commands will fully solve my problem ! Thank you ! Regards, lubo

Hi, cbrn, i have core2duo. i know that. I was just wondered if there is some command or some way. Yes, this is only the way. i wanted to draw something in autocad meanwhile...i will see if it is possible - whether the slowdown is noticeable or not. Thank you. Regards, lubo

Hi, my code for entire model looks like this : *do,i,1,7 *do,j,1,4 fini /prep7 ...create finite model *do,k,1,3 *do,l,1,2 fini /sol ...... fini /post26 ...... *enddo *enddo fini /prep7 edele, all...

Hi, i would like to perform a parametric study with four parameters. In my case it means 7*4*3*2=168 runs. I presume that all of this will take some days. But still i need to use my PC for another work. Is there any way to temporary stop APDL analysis for day time and launch it for night time ...

Hi, ok, when i wrote that i am a new one i didnt mean that i dont have any theoretical basics. Before i wrote this thread i have recalled the basics. So i know the formula for logarithmic decrement. As i wrote previously the problem is that when the engine has left the bridge (the time response...

Hi, Thank you for your exhausting answer. I have a measurement but, i am afraid that i am not able to get logarithmic decrement from it. The bridge is relatively short (24m only, an engine has 11.5m from the first axle to the last). The weight of the engine is relatively small compare to weight...

Hi, i need to perform transient dynamic analysis of railway bridge and results compare with measurement. But in this field i am a new one. I have already studied some stuff in ansys help. I want to include some damping via alpha and beta coefficients of Rayleigh Damping formulation. To compute...

Thank you.

Hi ! Thank you for your quick reply - it fully solved my problem. About your rotated nodal coordinate system macro i am always pleased to learn something new... If you write me some "key commands" to create this macro may be i will be able to create it even by myself. Regards, lubo

...I tried the following way, but it doesnt work : /prep7 ! creating model ... NUMMRG, ALL NUMCMP, ALL NWRITE,'nodes','txt' EWRITE,'elems','txt' *GET,ne,ELEM,,NUM,MAX NUMOFF, ELEM, ne *GET,nn,node,,NUM,MAX NUMOFF, node, nn LOCAL,11,0,25,-2,0,180, , ,1,1 ! created new position of copy...

Hi, the problem was that I wrote two slightly different do-loops as follows : *do,aq,1,5 ... *enddo *do,aq,1,5 *do,bq,1,3 ... *enddo *enddo in the first do-loop I forgot to write *enddo so this loop was executed only one time not five times. After I added *enddo the problem was...

Hi, I am doing a parametric study via *do-loops. In process of saving results to arrays obtaining following error message : *DO loop index same as outer index AQ. It is related with *DO,AQ,1,3... The first crazy thing is that in code written above I use similar Do-loop construction and it...

Hi, Thank you for your reply cbrn ! I hoped that the answer will be as you wrote. I set these values for solution (the end of the previous load step is time = 6): NCNV , 2 LNSRCH, 1 TIME , 46 AUTOTS, ON NSUBST, 160,2000,160 NEQIT , 40 solution started with (46-6)/160 = 0.25 time increment...

Hi, I do a set of nonlinear buckling analyses via APDL. I use shell181 and mpc 184. In some analyses the reason for termination was unconverged solution : R E S T A R T I N F O R M A T I O N REASON FOR TERMINATION. . . . . . . . . .UNCONVERGED SOLUTION but for another ones : R E...

Hi vidiii, If you look on selection syntax, two values must be imput min and max. So when I want to select some nodes in some location on line I do that this way : nsel,s,loc,x, L1-q, L1+q, where q is a very small value. Since my one very terrible experience I have not been using (...I hope...