{"id":456825,"date":"2026-04-21T10:11:04","date_gmt":"2026-04-21T10:11:04","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-set-the-materials-viscosity-in-autodyn-2\/"},"modified":"2026-04-21T10:11:04","modified_gmt":"2026-04-21T10:11:04","slug":"how-to-set-the-materials-viscosity-in-autodyn-2","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-set-the-materials-viscosity-in-autodyn-2\/","title":{"rendered":"how to set the material\u2019s viscosity in Autodyn"},"content":{"rendered":"<p>&lt;p&gt;We are performing ultra-high-speed impact analysis using Autodyn&#8217;s SPH method.&lt;br&gt;The projectile&#8217;s impact velocity is 7 km\/s, and typically, the impacted object liquefies upon impact.&lt;\/p&gt;&lt;p&gt;We are performing ultra-high-speed impact analysis using Autodyn&#8217;s SPH method.&lt;\/p&gt;&lt;p&gt;The projectile&#8217;s impact velocity is 7 km\/s, and typically, the impacted object liquefies upon impact. We would like to perform a simulation using a resin material as the impacted object. When I perform a collision analysis using the polyethylene material included in Autodyn by default, the polyethylene scatters, which differs from the actual phenomenon. In reality, due to the material&rsquo;s property of melting at high temperatures (viscosity), material remains around the impact area of the impacted object. My question is: Please tell me how to set the material&rsquo;s viscosity in Autodyn.&lt;\/p&gt;&lt;p&gt;<a href=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/05-11-2024-1730798684-mceclip0.png\"><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/05-11-2024-1730798684-mceclip0.png\" \/><\/a>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-456825","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27815"],"_bbp_topic_id":["456825"],"_bbp_author_ip":["130.34.95.40"],"_bbp_last_reply_id":["457023"],"_bbp_last_active_id":["457023"],"_bbp_last_active_time":["2026-04-24 05:32:29"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["519735","88"],"_btv_view_count":["59"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["88"]},"test":"wakai-kaiki-q2dc-tohoku-ac-jp"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/456825","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\/456825\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=456825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}