{"id":53835,"date":"2021-03-25T05:16:05","date_gmt":"2021-03-25T05:16:05","guid":{"rendered":"\/forum\/forums\/topic\/error-resistivity-must-be-input-for-velocity-effect-in-elements\/"},"modified":"2021-03-25T05:16:05","modified_gmt":"2021-03-25T05:16:05","slug":"error-resistivity-must-be-input-for-velocity-effect-in-elements","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-resistivity-must-be-input-for-velocity-effect-in-elements\/","title":{"rendered":"***ERROR*** Resistivity must be input for velocity effect in elements"},"content":{"rendered":"
\n
\n

Greetings<\/p>\n

This is an error I am facing while doing analysis. <\/p>\n

The analysis – A copper plate and a magnet are placed adjacent to each other with a certain gap. A velocity is given to the plate (-0.1m\/s) and the magnet remains stationary. So, as the plate move, the plate will see a change in a magnetic field by which eddy current will be generated in the plate and due to this current a magnetic field will be generated of opposite polarity as that of the magnet. Due to this generated magnetic field, the magnet experiences a force. I FMAGBC the copper plate and parallel flux as a boundary condition.<\/p>\n

My aim is to calculate the eddy current, Lorentz force associated with this analysis, but I am not able to solve it.<\/p>\n

Please provide any suggestion regarding loading, model, or anything you like to suggests<\/p>\n

I am providing Marcos of my problem for a better understanding of the analysis. <\/p>\n

\/PREP7  <\/p>\n

!*  <\/p>\n

ET,1,SOLID97<\/p>\n

!*  <\/p>\n

KEYOPT,1,1,1<\/p>\n

KEYOPT,1,2,1<\/p>\n

KEYOPT,1,5,1<\/p>\n

!*  <\/p>\n

KEYOPT,1,1,1<\/p>\n

!*  <\/p>\n

!Real Constants<\/p>\n

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

R,1,<\/p>\n

RMORE, , , , ,-0.1, ,  <\/p>\n

RMORE, , , , , ,<\/p>\n

!*  <\/p>\n

!*  <\/p>\n

R,2,<\/p>\n

RMORE, , , , , , ,  <\/p>\n

RMORE, , , , , ,<\/p>\n

!*  <\/p>\n

!*<\/p>\n

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

! Material Properties  <\/p>\n

MPTEMP,,,,,,,,  <\/p>\n

MPTEMP,1,0  <\/p>\n

MPDATA,MURX,1,,1.2289  ! Permeability of magnet<\/p>\n

MPTEMP,,,,,,,,  <\/p>\n

MPTEMP,1,0  <\/p>\n

MPDATA,MGXX,1,, <\/p>\n

MPDATA,MGYY,1,, <\/p>\n

MPDATA,MGZZ,1,,9.26e5  !coercive force of magnet  <\/p>\n

MPTEMP,,,,,,,,  <\/p>\n

MPTEMP,1,0  <\/p>\n

MPDATA,MURX,2,,0.999  ! Permeability of copper plate<\/p>\n

MPTEMP,,,,,,,,  <\/p>\n

MPTEMP,1,0  <\/p>\n

MPDATA,RSVX,2,,1.72e-8 ! Resistivity of copper plate <\/p>\n

MPTEMP,,,,,,,,  <\/p>\n

MPTEMP,1,0  <\/p>\n

MPDATA,MURX,3,,1  ! Permeability of air<\/p>\n

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

! Modelling<\/p>\n

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

BLOCK,-0.013,0.013,-0.013,0.013,-0.0025,0.0025, ! copper plate<\/p>\n

CYLIND,0.013, ,0.0055,0.0355,0,360,  ! magnet<\/p>\n

BLOCK,-0.05,0.05,-0.05,0.05,-0.05,0.05, ! enclosed area<\/p>\n

FLST,2,3,6,ORDE,2  <\/p>\n

FITEM,2,1  <\/p>\n

FITEM,2,-3  <\/p>\n

VOVLAP,P51X <\/p>\n

FLST,2,3,6,ORDE,3  <\/p>\n

FITEM,2,1  <\/p>\n

FITEM,2,-2  <\/p>\n

FITEM,2,4  <\/p>\n

VGLUE,P51X  <\/p>\n

\/VIEW,1,1,1,1  <\/p>\n

\/ANG,1  <\/p>\n

\/REP,FAST  <\/p>\n

NUMCMP,VOLU<\/p>\n

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

! Meshing <\/p>\n

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

TYPE,  1  <\/p>\n

MAT,    1<\/p>\n

REAL,    2  <\/p>\n

ESYS,    0  <\/p>\n

SECNUM, <\/p>\n

!*  <\/p>\n

MSHAPE,1,3D <\/p>\n

MSHKEY,0<\/p>\n

!*  <\/p>\n

CM,_Y,VOLU  <\/p>\n

VSEL, , , ,    2 <\/p>\n

CM,_Y1,VOLU <\/p>\n

CHKMSH,'VOLU'  <\/p>\n

CMSEL,S,_Y  <\/p>\n

!*  <\/p>\n

VMESH,_Y1  <\/p>\n

!*  <\/p>\n

CMDELE,_Y  <\/p>\n

CMDELE,_Y1  <\/p>\n

CMDELE,_Y2  <\/p>\n

!*  <\/p>\n

TYPE,  1  <\/p>\n

MAT,    2<\/p>\n

REAL,    1  <\/p>\n

ESYS,    0  <\/p>\n

SECNUM, <\/p>\n

!*  <\/p>\n

CM,_Y,VOLU  <\/p>\n

VSEL, , , ,    1 <\/p>\n

CM,_Y1,VOLU <\/p>\n

CHKMSH,'VOLU'  <\/p>\n

CMSEL,S,_Y  <\/p>\n

!*  <\/p>\n

VMESH,_Y1  <\/p>\n

!*  <\/p>\n

CMDELE,_Y  <\/p>\n

CMDELE,_Y1  <\/p>\n

CMDELE,_Y2  <\/p>\n

!*  <\/p>\n

TYPE,  1  <\/p>\n

MAT,    3<\/p>\n

REAL,    2  <\/p>\n

ESYS,    0  <\/p>\n

SECNUM, <\/p>\n

!*  <\/p>\n

CM,_Y,VOLU  <\/p>\n

VSEL, , , ,    3 <\/p>\n

CM,_Y1,VOLU <\/p>\n

CHKMSH,'VOLU'  <\/p>\n

CMSEL,S,_Y  <\/p>\n

!*  <\/p>\n

VMESH,_Y1  <\/p>\n

!*  <\/p>\n

CMDELE,_Y  <\/p>\n

CMDELE,_Y1  <\/p>\n

CMDELE,_Y2  <\/p>\n

!*  <\/p>\n

ALLSEL,ALL<\/p>\n

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

! Force Flag<\/p>\n

  <\/p>\n

VSEL,S, , ,    1 <\/p>\n

ESLV,S  <\/p>\n

CM,A,ELEM  <\/p>\n

ALLSEL,ALL  <\/p>\n

!*  <\/p>\n

!*  <\/p>\n

FMAGBC,'A' <\/p>\n

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

! Boundary Condition<\/p>\n

 <\/p>\n

FLST,2,6,5,ORDE,2  <\/p>\n

FITEM,2,11  <\/p>\n

FITEM,2,-16 <\/p>\n

DA,P51X,ASYM<\/p>\n

FINISH  <\/p>\n

\/SOL<\/p>\n

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

! Tranisent Velocity<\/p>\n

!*  <\/p>\n

ANTYPE,4<\/p>\n

!*  <\/p>\n

TRNOPT,FULL <\/p>\n

!*  <\/p>\n

DELTIM,0.002,0,0<\/p>\n

OUTRES,ERASE<\/p>\n

OUTRES,ALL,ALL  <\/p>\n

AUTOTS,1<\/p>\n

TIME,0.01  <\/p>\n

\/STATUS,SOLU<\/p>\n

SOLVE  <\/p>\n

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

Thank You!<\/p>\n

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

\n
\n
\n\"Error1.jpg\"
\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-53835","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["26158"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["$\u0001I\u0000\u001b'??m\u000b????;R"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["295"],"_bbp_subscription":["231939"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["53835"],"_bbp_forum_id":["27791"],"_bbp_engagement":["94","58821","184894"],"_bbp_voice_count":["3"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["148255"],"_bbp_last_active_id":["148255"],"_bbp_last_active_time":["2021-03-26 09:43:40"]},"test":"d_d"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/53835","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\/53835\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=53835"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}