Hello,<\/p>\n
<\/p>\n
I am trying to use the dampening parameter beta in a simulation I have built. The simulation runs just fine when there is no damping parameter beta in the material properties, but as soon as I add beta to get rid of some oscillations I am seeing, the force stops converging. My material is hyperelastic and nearly incompressible. I put this command under Solid_Body in the Geometry:<\/p>\n
ET, matid, 226<\/strong> <\/p>\n Because the documentation says, “The current-technology elements with mixed u-P formulation and SOLID285<\/span> are available for nearly incompressible hyperelastic materials.” I find 226 is a current technology element and without the keyopt it will not converge any better than the solid186 element I tried before. So I wanted to try the mixed u_P formulation as the documentation says. However, I get this error:<\/p>\n *** ERROR *** CP = 2.625 TIME= 16:56:53<\/strong> <\/p>\n <\/p>\n <\/p>\n Why does the documentation say I can use keyopt 11 under solid226 and yet transient structural says it is invalid? Is there anything else I can do to help “force convergence” when I add dampening to the material property? I have tried a finer mesh, smaller time steps and so I am at a loss. I have tried dampening parameter values of 0.1, 0.01 and they both fail to converge. <\/p>\n <\/p>\n <\/p>\n Thanks<\/p>\n","protected":false},"template":"","class_list":["post-35644","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["7816"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0"],"_btv_view_count":["859"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["35644"],"_bbp_forum_id":["27791"],"_bbp_engagement":["162192"],"_bbp_voice_count":["1"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["86233"],"_bbp_last_active_id":["86233"],"_bbp_last_active_time":["2019-05-30 06:21:56"]},"test":"ansysuser"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/35644","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\/35644\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=35644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
keyopt, matid, 11, 1<\/strong><\/p>\n
For element type = 1 (SOLID226), KEYOPT(11) = 1 is invalid.<\/strong><\/p>\n
<\/strong><\/p>\n