{"id":47769,"date":"2020-08-31T21:08:19","date_gmt":"2020-08-31T21:08:19","guid":{"rendered":"\/forum\/forums\/topic\/vcct-delamination-using-plane182-with-plane-stress-with-thickness\/"},"modified":"2020-08-31T21:08:19","modified_gmt":"2020-08-31T21:08:19","slug":"vcct-delamination-using-plane182-with-plane-stress-with-thickness","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/vcct-delamination-using-plane182-with-plane-stress-with-thickness\/","title":{"rendered":"VCCT delamination using plane182 with plane stress with thickness"},"content":{"rendered":"
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Hello Team,<\/p>\n

I faced an issue while validating the DCB test for delamination using Ansys plane 182 plane stress option using VCCT<\/strong>. <\/p>\n

–>The critical load as predicted by ansys doesn't seem to match with the expected values: It under-predicts the critical load for delamination. <\/p>\n

–>Also, the initial slope of the force-deflection before the failure initiates also appears to be not matching.<\/p>\n

I tried refining the mesh and using higher order but the issue still persists. <\/p>\n

I have attached the input file: dcb.dat<\/strong> to reproduce this issue. Also attached is the image of the various simulated results. <\/p>\n

<\/p>\n<\/p>\n

The parameters of DCB are:<\/p>\n

L=200           !* length<\/p>\n

dh=40            !* total thickness<\/p>\n

a0=100 ! pre-crack length<\/p>\n

nel=200           !* no.elements along length<\/p>\n

neh=40            !* no.elements along thick<\/p>\n

emod=2.0e+05 ! E<\/p>\n

thick=10 ! width<\/p>\n

g1c=0.9628         !* critical energy-release rate<\/p>\n

pratio=0.3 ! *Proisson ratio<\/p>\n

<\/p>\n<\/p>\n

Please let me know your comments on observed results and suggestions. also, may i know if there is any validation problem to verify using plane stress option.<\/p>\n

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