{"id":247028,"date":"2023-01-19T14:49:12","date_gmt":"2023-01-19T14:49:12","guid":{"rendered":"\/forum\/?post_type=topic&p=247028"},"modified":"2023-01-19T14:49:12","modified_gmt":"2023-01-19T14:49:12","slug":"delete-cells-with-stress-above-a-certain-value-ekill-apdl","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/delete-cells-with-stress-above-a-certain-value-ekill-apdl\/","title":{"rendered":"Delete cells with stress above a certain value \u2013 EKILL \u2013 APDL"},"content":{"rendered":"

I want to use an EKILL command in Static Structural<\/em> as I don’t know how to import CFD results into Explicit Dynamic<\/em> (seems impossible to drag Fluent-solution<\/strong> to Explicit Dynamic-Setup<\/strong><\/em>).<\/p>\n

Therefore I am using the following code found in: “https:\/\/simutechgroup.com\/performing-ekill-element-death-in-mechanical<\/em>“<\/p>\n

! kill elements (EKILL Element Death) for which nodes have values above a designated value…<\/em><\/span>
!<\/em><\/span>
\/com, #############################################<\/span>
\/com, #<\/span>
*get,myncmls,active,,solu,ncmls ! cumulative number of load steps<\/em><\/span><\/span>
*if,myncmls,gt,0,then ! if this is after the first<\/em><\/span><\/span>
cmsel,s,elem_to_kill_body ! ELEMENT component to be checked<\/span><\/span>
nsle ! nodes on these elements<\/em><\/span><\/span>
SELTOL,1.0e-12 ! stay within range below<\/em><\/span><\/span>
! #########<\/em><\/span>
nsel,r,s,eqv,230,2000000 ! re-select nodes with results above a value <<<<\/em><\/span><\/span>
! #########<\/em><\/span>
SELTOL ! selection tolerance back to default<\/em><\/span><\/span>
*get,numnode,node,,count ! how many nodes with result above?<\/em><\/span><\/span>
*if,numnode,gt,0,then<\/span>
esln ! elements with any node selected<\/em><\/span><\/span>
*get,numelem,elem,,count<\/span>
*if,numelem,gt,0,then<\/span>
ekill,all<\/span>
*endif<\/span>
*endif<\/span>
allsel<\/span>
*else<\/span>
! if first load step, have result written to in-memory database<\/em><\/span>
fini<\/span>
\/config,noeldb,0 ! write results into the database<\/em><\/span><\/span>
\/solu ! continue with solution<\/em><\/span><\/span>
*endif<\/span>
\/com, #<\/span>
\/com, #############################################<\/span>
!<\/span><\/em><\/span><\/p>\n

I have never used APDL but I assume that the following lines have to be ammended:<\/p>\n

cmsel,s,elem_to_kill_body ! ELEMENT component to be checked<\/span><\/span><\/p>\n

In here “elem_to_kill_body<\/em><\/span>” I have to substitute with my Named selection<\/em> to be checked<\/p>\n

nsel,r,s,eqv,230,2000000 ! re-select nodes with results above a value <<<<\/em><\/span><\/span><\/p>\n

In here I have to change “r,s,eqv,230,2000000<\/span>” in order to check stresses above a definned value<\/p>\n

I want to delete cells with stresses greater than a value, how should I change the previous command?<\/p>\n

Thank you,<\/p>\n","protected":false},"template":"","class_list":["post-247028","topic","type-topic","status-closed","hentry","topic-tag-ansys-apdl","topic-tag-ansys-mechanical-apdl","topic-tag-apdl-command","topic-tag-ekill","topic-tag-ekill-elements"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["23.77.218.220"],"_bbp_subscription":["2267","58821"],"_btv_view_count":["912"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["247028"],"_bbp_forum_id":["27791"],"_bbp_engagement":["2267","58821"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["247123"],"_bbp_last_active_id":["247123"],"_bbp_last_active_time":["2023-01-20 14:01:28"]},"test":"pv00170surrey-ac-uk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/247028","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/247028\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=247028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}