yade-users team mailing list archive
-
yade-users team
-
Mailing list archive
-
Message #07618
Re: [Question #228491]: questions about the deviatoric stress
Question #228491 on Yade changed:
https://answers.launchpad.net/yade/+question/228491
Status: Answered => Open
Fu zuoguang is still having a problem:
Dear Jan Stránsky and Bruno Chareyre and all users:
Two weeks of hard work helps me to understand how this script works. So I can obtain the "axial strain VS deviatoric stress" curve using the class "TriaxialStressController". But there are some strange things in this curve, which can be described as that in plastic deformation stage, this curve is not smooth and can fluctuate with the increase of axial-strain. This phenomenon can never be found in published articles.The important details of my 2D simulation are as follows:
(1)initial size of box: 0.07m*0.07m
(2)numbers of particles: 7500
(3)material of particles: E=5e9,possion=0.5,frictionangle=0.5
(4)confining pressure of isotropic consolidation:1MPa, porosity:0.06
(5)lateral pressure of biaxial compression:1MPa,axial strain rate:2 (1/s)
(6)dt=2.4e-7(s),steps:1.5e6, actual time:0.36(s)
(7)final axial strain:0.3
I can not provide this curve in this page and some details of whole result can be found below.
Please tell me why this problem occurs(I think the reason is that the axial strain rate is too large)
SEEKING your help!
Iter Axialstrain Porosity Deviator-stress
493000 0.0997244 0.00626189 755834
503000 0.10189 0.0058327 760293
513000 0.104055 0.00728488 733605
523000 0.10622 0.00585677 757016
533000 0.108386 0.00469718 775582
543000 0.110551 0.00394338 786322
553000 0.112716 0.00439076 777354
563000 0.114882 0.00307567 798915
573000 0.117047 0.00207186 814658
583000 0.119212 0.00186521 813887
593000 0.121378 0.0020582 809008
603000 0.123543 0.00133962 818889
613000 0.125699 0.000458736 834077
623000 0.127851 -0.000468314 849604
633000 0.130002 -0.00113928 859647
643000 0.132153 -0.0017366 869727
653000 0.134305 -0.00151457 864927
663000 0.136456 -0.000806454 851898
673000 0.138607 -0.0015764 862675
683000 0.140759 1.57165e-05 834809
693000 0.14291 -0.00171553 860642
703000 0.145061 -0.00287279 879939
713000 0.147212 -0.0034703 889668
723000 0.149371 0.00103513 813140
733000 0.151536 -0.000309393 836200
743000 0.153701 -0.00035667 838900
753000 0.155867 -0.00140826 856075
763000 0.158032 -0.00149945 857205
773000 0.160198 -0.000833769 847094
783000 0.162363 -0.00203431 867848
793000 0.164521 0.00174746 802394
803000 0.166672 0.00103586 815354
813000 0.168823 0.00210134 798081
823000 0.170975 0.00181816 802584
833000 0.173126 0.00215025 793887
843000 0.175277 0.00158307 802304
853000 0.177428 0.000344257 825067
863000 0.179579 0.000625422 823909
873000 0.181731 -0.000533246 844726
883000 0.183882 -0.00132226 860392
893000 0.186033 -0.00128911 859656
903000 0.188185 -0.00205853 873401
913000 0.190336 -0.00165614 866637
923000 0.192487 -0.00286234 887196
933000 0.194639 -0.00366868 901276
943000 0.19679 -0.00303054 892691
953000 0.198941 -0.0039252 908600
963000 0.201093 -0.00437968 916226
973000 0.203216 -0.00492721 925305
983000 0.205336 0.00414524 771226
993000 0.207488 0.00374773 776905
1.003e+06 0.209639 0.00244792 799567
1.013e+06 0.21179 0.00149398 816299
1.023e+06 0.213942 0.000978113 826704
1.033e+06 0.216111 0.00457495 770121
1.043e+06 0.218283 0.00421834 777550
1.053e+06 0.220454 0.00324636 795069
1.063e+06 0.22262 0.00238659 810151
1.073e+06 0.224787 0.00245986 806834
1.083e+06 0.226954 0.00241427 802134
1.093e+06 0.229122 0.00164067 823048
1.103e+06 0.231276 0.00714832 721778
1.113e+06 0.233428 0.0110336 656121
1.123e+06 0.23558 0.00965141 679790
1.133e+06 0.237732 0.00856878 698422
1.143e+06 0.239884 0.0110041 654728
1.153e+06 0.242036 0.00984474 675581
1.163e+06 0.244188 0.00890812 692616
1.173e+06 0.24634 0.00926173 683994
1.183e+06 0.248492 0.00842986 698097
1.193e+06 0.250644 0.00890909 687120
1.203e+06 0.252796 0.00772745 707752
1.213e+06 0.254948 0.00686933 722268
1.223e+06 0.2571 0.00585933 739428
1.233e+06 0.259253 0.00503425 753833
1.243e+06 0.261405 0.00591891 738854
1.253e+06 0.263557 0.00903091 686522
1.263e+06 0.265714 0.00912451 686329
1.273e+06 0.267872 0.00858234 696884
1.283e+06 0.27003 0.00791571 708363
1.293e+06 0.272187 0.00785003 709879
1.303e+06 0.274345 0.00763816 715055
1.313e+06 0.276503 0.0106046 663051
1.323e+06 0.27866 0.00999361 671401
1.333e+06 0.280818 0.00888053 691112
1.343e+06 0.282976 0.011717 641444
1.353e+06 0.285134 0.0108421 656220
1.363e+06 0.287291 0.00974862 677058
1.373e+06 0.289449 0.00985097 675115
1.383e+06 0.291607 0.0102327 670967
1.393e+06 0.293764 0.011297 652040
1.403e+06 0.29592 0.00995483 675855
1.413e+06 0.298076 0.00912852 691242
1.423e+06 0.300233 0.00974395 678899
1.433e+06 0.302391 0.0100301 674135
1.443e+06 0.304548 0.0100719 675057
1.453e+06 0.306706 0.00884285 696894
1.463e+06 0.308864 0.00784014 713542
1.473e+06 0.31102 0.00978143 681472
1.483e+06 0.313176 0.00916003 690651
1.493e+06 0.315331 0.00919851 683262
1.503e+06 0.317488 0.00964061 680739
1.513e+06 0.319646 0.00938621 683147
1.523e+06 0.321804 0.00923813 686453
1.533e+06 0.323959 0.0087624 693229
--
You received this question notification because you are a member of
yade-users, which is an answer contact for Yade.
