## General Mechanical

Topics relate to Mechanical Enterprise, Motion, Additive Print and more

#### What is the problem when ansys closes during a nonlinear analysis?

• jbraido
Subscriber
I have a T concrete beam and my purpose is to define concrete cracks/crush regions. I'm using smeared modeling.nI'm using Ansys APDL and this is the first time with nonlinear analysis. Maybe there are some errors in the code. nThe analysis started but ansys closes before the solution.nI'm using solid65 and reinf264. I've read that solid 65 do not need the strain-stress definition values.nMay somebody help me, please?nBelow is the code for the T concrete beam:n/prep7n!Beam length (m)nL=4t!mn!n!model scalenEsc=1ttt!real modeln!Force (N)odes=21tt!nodes loadednfp=-5000/nodesn!n!steel area - two 8mm diameter barsnA=(5.026548e-5)*2 !m?n!nlt=0.48*Escttt!deck widthnct=L*Escttt!deck lengthnet=0.05*Escttt!deck thicknessnht=0.40*Escttt!T cross-section heightnnd=40tttt!elements through z-axisn!net,1,solid65,n!n!Keyopts for solid65nkeyopt,1,1,1nkeyopt,1,3,0tn!keyopt,1,5,1nkeyopt,1,6,3tnkeyopt,1,7,1tnkeyopt,1,8,0tnet,2,reinf264n!Concrete propertiesn/pnum, mat, 0nsecnum,1ttnmat,1nmp,ex,1,28e9ttt!Young's modulus (N/m?)nmp,prxy,1,0.2ttt!Poisson coefficientnmp,dens,1,25e3,,,,,tt!Material density (N)ntb,concr,1ttt!data tablentbdata,1,0.8,0.2,2.5e6,25e6,,,t!nonlinear propertiesn!n!Steel propertiesnsecnum,2nmat,2nmp,ex,2,200e9ttt!Young's modulus(N/m?)nmp,prxy,2,0.3ttt!Poisson coefficientnmp,dens,2,78.5e3ttt!Steel density(N)ntb,biso,2ntbdata,1,2000ttt!non-linear propertyntbdata,2,500e6ttt!Yelding value!n!Smeared steelnmat,2nsecnum,2nsectype,2,reinf,smearnsecdata, 2, A, , ,0,elef,2,0.7,0.7nmat,1nsecnum,1n!K pointsnK,1,0*Esc,0*Esc,0.20*EscnK,2,0*Esc,0*Esc,0.28*EscnK,3,0,0.02*Esc,0.28*EscnK,4,0*Esc,(ht-et)*Esc,0.28*EscnK,5,0*Esc,(ht-et)*Esc,lt*EscnK,6,0*Esc,ht*Esc,lt*EscnK,7,0*Esc,ht*Esc,0.28*EscnK,8,0*Esc,ht*Esc,0.20*EscnK,9,0*Esc,ht*Esc,0*EscnK,10,0*Esc,(ht-et)*Esc,0*EscnK,11,0*Esc,0.02*Esc,0.20*EscnK,12,0*Esc,(ht-et)*Esc,0.20*EscnK,13,ct*Esc,0*Esc,0.20*EscnK,14,ct*Esc,0*Esc,0.28*EscnK,15,ct*Esc,0.02*Esc,0.28*EscnK,16,ct*Esc,(ht-et)*Esc,0.28*EscnK,17,ct*Esc,(ht-et)*Esc,lt*EscnK,18,ct*Esc,ht*Esc,lt*EscnK,19,ct*Esc,ht*Esc,0.28*EscnK,20,ct*Esc,ht*Esc,0.20*EscnK,21,ct*Esc,ht*Esc,0.00*EscnK,22,ct*Esc,(ht-et)*Esc,0*EscnK,23,ct*Esc,0.02*Esc,0.20*EscnK,24,ct*Esc,(ht-et)*Esc,0.20*Escn!n!Areasna,1,2,3,11t!area 1na,1,2,14,13t!area 2na,1,11,23,13t!area 3na,13,14,15,23t!area 4na,14,15,3,2t!area 5na,3,11,23,15t!area 6n!n!Volumesnva,1,2,3,4,5,6n!na,3,4,12,11tt!area 7na,11,12,24,23tt!area 8na,4,16,15,3tt!area 9na,15,16,24,23tt!area 10na,4,16,24,12tt!area 11n!n!Add volumesnva,6,7,8,9,10,11n!na,4,7,8,12t!area 12na,12,24,20,8t!area 13na,16,19,20,24t!area 14na,7,19,16,4t!area 15na,19,20,8,7t!area 16n!n!Add volumesnva,11,12,13,14,15,16n!na,8,9,10,12 t!area 17na,9,21,22,10t!area 18na,24,12,10,22t!area 19na,20,21,22,24t!area 20na,20,8,9,21t!area 21n!n!Add volumesnva,13,17,18,19,20,21n!na,4,5,6,7t!area 22na,17,18,19,16t!area 23na,16,17,5,4t!area 24na,5,17,18,6t!area 25na,6,7,19,18t!area 26n!n!Add volumesnva,15,22,23,24,25,26n!n!mesh sizenesize,0.025*Escttnvmesh,1n!nmat,2nsecnum,2n!nereinf,n!n/TRLCY, elem,0.5,alln!nmat,1nsecnum,1n!nvatt,1,,,n!n!Mesh sizenesize,0.025*Esctnvmesh,2,5n!n/PNUM, node, onn!n!Boundary conditionsn!nD, 11, uxnD, 11, uynD, 172, uxnD, 172, uynD, 174, uxnD, 174, uynD, 173, uxnD, 173, uynD, 171, uxnD, 171, uynD, 170, uxnD, 170, uynD, 810, uxnD, 810, uynD, 651, uxnD, 651, uynD, 492, uxnD, 492, uynD, 175, uxnD, 175, uynD, 169, uxnD, 169, uynD, 809, uxnD, 809, uynD, 650, uxnD, 650, uynD, 491, uxnD, 491, uynD, 176, uxnD, 176, uynD, 168, uxnD, 168, uynD, 808, uxnD, 808, uynD, 649, uxnD, 649, uynD, 490, uxnD, 490, uynD, 177, uxnD, 177, uynD, 167, uxnD, 167, uynD, 807, uxnD, 807, uynD, 648, uxnD, 648, uynD, 489, uxnD, 489, uynD, 178, uxnD, 178, uynD, 166, uxnD, 166, uynD, 806, uxnD, 806, uynD, 647, uxnD, 647, uynD, 488, uxnD, 488, uynD, 179, uxnD, 179, uynD, 165, uxnD, 165, uynD, 805, uxnD, 805, uynD, 646, uxnD, 646, uynD, 487, uxnD, 487, uynD, 180, uxnD, 180, uynD, 164, uxnD, 164, uynD, 804, uxnD, 804, uynD, 645, uxnD, 645, uynD, 486, uxnD, 486, uynD, 181, uxnD, 181, uynD, 163, uxnD, 163, uynD, 803, uxnD, 803, uynD, 644, uxnD, 644, uynD, 485, uxnD, 485, uynD, 182, uxnD, 182, uynD, 1, uxnD, 1, uynD, 2, uxnD, 2, uynD, 3, uxnD, 3, uynD, 4, uxnD, 4, uynD, 5, uxnD, 5, uynD, 12, uxnD, 12, uynD, 652, uxnD, 652, uynD, 493, uxnD, 493, uynD, 334, uxnD, 334, uynD, 333, uxnD, 333, uynD, 13, uxnD, 13, uynD, 653, uxnD, 653, uynD, 494, uxnD, 494, uynD, 335, uxnD, 335, uynD, 332, uxnD, 332, uynD, 14, uxnD, 14, uynD, 654, uxnD, 654, uynD, 495, uxnD, 495, uynD, 336, uxnD, 336, uynD, 331, uxnD, 331, uynD, 15, uxnD, 15, uynD, 655, uxnD, 655, uynD, 496, uxnD, 496, uynD, 337, uxnD, 337, uynD, 330, uxnD, 330, uynD, 16, uxnD, 16, uynD, 656, uxnD, 656, uynD, 497, uxnD, 497, uynD, 338, uxnD, 338, uynD, 329, uxnD, 329, uynD, 17, uxnD, 17, uynD, 657, uxnD, 657, uynD, 498, uxnD, 498, uynD, 339, uxnD, 339, uynD, 328, uxnD, 328, uynD, 18, uxnD, 18, uynD, 658, uxnD, 658, uynD, 499, uxnD, 499, uynD, 340, uxnD, 340, uynD, 327, uxnD, 327, uynD, 19, uxnD, 19, uynD, 659, uxnD, 659, uynD, 500, uxnD, 500, uynD, 341, uxnD, 341, uynD, 326, uxnD, 326, uynD, 14515, uznD, 14676, uznD, 14675, uznD, 18380, uznD, 18381, uznD, 18379, uznD, 18363, uznD, 18364, uznD, 18355, uznD, 14491, uznD, 14500, uznD, 14499, uzn/PNUM, node, offnesel,allneplotn!Nodal forcesnF,12982,fy,fpnF,13288,fy,fpnF,13626,fy,fpnF,13785,fy,fpnF,13944,fy,fpnF,14585,fy,fpnF,16752,fy,fpnF,16753,fy,fpnF,16754,fy,fpnF,16755,fy,fpnF,16756,fy,fpnF,16757,fy,fpnF,16758,fy,fpnF,19764,fy,fpnF,20062,fy,fpnF,20221,fy,fpnF,20380,fy,fpnF,20539,fy,fpnF,20698,fy,fpnF,20857,fy,fpnF,21016,fy,fpnF,12962,fy,fpnF,13308,fy,fpnF,13606,fy,fpnF,13765,fy,fpnF,13924,fy,fpnF,14605,fy,fpnF,16612,fy,fpnF,16613,fy,fpnF,16614,fy,fpnF,16615,fy,fpnF,16616,fy,fpnF,16617,fy,fpnF,16618,fy,fpnF,19744,fy,fpnF,20082,fy,fpnF,20241,fy,fpnF,20400,fy,fpnF,20559,fy,fpnF,20718,fy,fpnF,20877,fy,fpnF,21036,fy,fpncheck, n/solunantype,staticnnlgeom, onnautots,on nnsubst,3, 10, 1nnropt,auto, crpl, 0.15narclen,onnsolve,n/post1nset,listnfinishnn
• John Doyle
Ansys Employee
Try sending your output to a txt file so you can diagnose the issue. Just looking at your Solver setting, I see you are only using 3 substeps with a maximum of 10. You might need hundreds of substeps to solve the problem, but the output should give you some clues as to how far off you are in terms of achieving balance.n
• John Doyle
Ansys Employee
See /OUTPUT,, command to save output to a file.n
• jbraido
Subscriber