{"id":458873,"date":"2026-05-26T17:50:43","date_gmt":"2026-05-26T17:50:43","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/explosion-calculation-in-explicitautodyn\/"},"modified":"2026-05-26T17:50:43","modified_gmt":"2026-05-26T17:50:43","slug":"explosion-calculation-in-explicitautodyn","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/explosion-calculation-in-explicitautodyn\/","title":{"rendered":"Explosion calculation in explicit\/autodyn"},"content":{"rendered":"<p>&lt;p&gt;Hello everyone.&lt;br&gt;I&#8217;m simulating an urban blast calculation in the explicit module, but first I put together a small test problem.&lt;br&gt;I need help with some settings.&lt;br&gt;1. I have three solid bodies: a cylinder, a TNT charge (a sphere), and air (a cube surrounding everything).&lt;br&gt;The TNT charge and air are Eulerian solids, and the cylinder is a Lagrange solid.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/05\/26-05-2026-1779817820-mceclip7.png\" \/>&lt;br&gt;The mesh has 70,000 elements.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/05\/26-05-2026-1779817506-mceclip0.png\" \/>&lt;br&gt;2. I set the calculation time to 0.001 since the model is small. For a large model, the calculation time is 1-15 ms because it includes a large building.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/05\/26-05-2026-1779817536-mceclip1.png\" \/>&lt;br&gt;3. I also adjusted the SPH speed time and the number of cells for my model, and I increased the number of result records to 200 (see images).&lt;br&gt;4. The calculation time is 10 minutes. I also configured the solver to Autodyn.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/05\/26-05-2026-1779817617-mceclip2.png\" \/>&lt;br&gt;5. I display the results: Total Deformation (for the body around the charge), Pressure (expression), ALPHAALL (expression).&lt;br&gt;These are the results I see:&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/05\/26-05-2026-1779817635-mceclip3.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/05\/26-05-2026-1779817680-mceclip4.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/05\/26-05-2026-1779817692-mceclip5.png\" \/>&lt;\/p&gt;&lt;p&gt;6. Now I want to see how the explosion waves propagate and make a nice animation, like this:&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/05\/26-05-2026-1779817782-mceclip6.png\" \/>&lt;\/p&gt;&lt;p&gt;How do I do this?&lt;br&gt;Thanks!&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-458873","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27814"],"_bbp_topic_id":["458873"],"_bbp_subscription":["257647","88"],"_bbp_author_ip":["46.229.243.178"],"_bbp_last_reply_id":["458909"],"_bbp_last_active_id":["458909"],"_bbp_last_active_time":["2026-05-27 11:43:13"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["257647","88"],"_btv_view_count":["42"],"_bbp_topic_status":["unanswered"]},"test":"javat33489gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/458873","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\/458873\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=458873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}