Does TRANS109 accept any relative permittivity other than 1.0?
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In ANSYS Release 10.0, TRANS109 only accepts a relative permittivity of 1.0. The total permittivity is the relative permittivity multiplied by the free-space permittivity. The relative permittivity is specified using the MP,PERX command. The free-space permittivity is specified using the EMUNIT command. TRANS109 requires you to specify a value for the relative permittivity, however, it uses a relative permittivity value of 1.0, regardless of the value specified. So, for TRANS109 the total permittivity is always the free-space permittivity. If you want to increase the total permittivity, you need to modify the free-space permittivity value, rather than defining a different relative permittivity. ! N3-----N4------N5 -> Volt = 1 ! | * * | ! | E1 * * E3 | ! | * * | ! | * E2 * | ! | * * | ! N1--------------N2 -> Volt = 0 /prep7 et,1,109 mp,perx,1,1 emunit,epzro,1 n,1 n,2,1 n,3,0,1 n,4,0.5,1 n,5,1,0.5 e,1,4,3 e,1,2,3 e,2,5,4 ! fix all structural DOFs d,all,ux,0 d,all,uy,0 ! apply ground d,1,volt,0 d,2,volt,0 ! apply voltage d,3,volt,1 d,4,volt,1 d,5,volt,1 /solu solve /post1 set,last nsel,s,node,,1,2 /com, /com, ********* /com, PERX = 1 /com, ********* /com, prnld,f alls /prep7 mp,perx,1,2 /solu solve /post1 set,last nsel,s,node,,1,2 /com, /com, ******************************************* /com, PERX = 2 /com, ELECTROSTATIC FORCE IS NOT AFFECTED BY PERX /com, ******************************************** /com, prnld,f alls |
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