{"id":364416,"date":"2024-04-26T16:25:36","date_gmt":"2024-04-26T16:25:36","guid":{"rendered":"\/forum\/?post_type=topic&#038;p=364416"},"modified":"2024-04-26T16:25:45","modified_gmt":"2024-04-26T16:25:45","slug":"ansys-q3d-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-q3d-simulation\/","title":{"rendered":"Ansys Q3D Simulation"},"content":{"rendered":"<p>Hi&nbsp;<br \/>I have a PCB 6 layer board which i am simulating in Ansys Q3D to extract plane inductance between two different points. Initially i defined two points as mentioned in picture as A to be the source and sink and i got about 25nH inductance i then changed the terminal and excitation to point B and added a smaller piece of sheet as well for one terminal which i unite with main plane. At point B i got like half of inductance as compared to point A. Why is this so? a difference of 1 to 2nH can be expected but this much difference is not logical at all.<br \/>Any help regarding this will be appreciated. Can i add sheet in way like i have added and unite it with board plane?<br \/>My workflow is like this&nbsp;<br \/>1)I connected different layers together to form a connected conductor.<br \/>2)Then i unite the whole assembly<br \/>3)Assign excitation(sorce\/sink)&nbsp;to the single net<br \/>Is there something wrong with workflow?<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/26-04-2024-1714137396-Capture.PNG\" alt=\"\"><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-364416","topic","type-topic","status-closed","hentry","topic-tag-ansys-q3d-extractor","topic-tag-pcb","topic-tag-q3d","topic-tag-q3d-extractor"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["23.52.43.88"],"_bbp_subscription":["102910","16577"],"_btv_view_count":["884"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["364416"],"_bbp_forum_id":["27793"],"_bbp_engagement":["16577","102910"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["369381"],"_bbp_last_active_id":["369381"],"_bbp_last_active_time":["2024-05-31 12:29:34"]},"test":"ca1900b14f146ad503a5231b2fa29c38ff1343b0"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/364416","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/364416\/revisions"}],"predecessor-version":[{"id":364491,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/364416\/revisions\/364491"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=364416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}