{"id":381643,"date":"2024-09-05T13:20:13","date_gmt":"2024-09-05T13:20:13","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/harmonic-analysis-viscoelastic-material\/"},"modified":"2024-09-05T13:20:13","modified_gmt":"2024-09-05T13:20:13","slug":"harmonic-analysis-viscoelastic-material","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/harmonic-analysis-viscoelastic-material\/","title":{"rendered":"harmonic analysis – viscoelastic material"},"content":{"rendered":"

<p>Hi everyone,<\/p><p>I’m trying to simulate a constraining layer design consisting of three layers: one layer of composite material, one layer of viscoelastic material, and one layer of an aluminum plate.<\/p><p>I’ve read almost every discussion on this topic, but nothing has helped so far. I found an ANSYS document and video and tried to replicate the steps, but the problem remains unresolved. I have experimental data for the viscoelastic material( storage modulus and loss factor).<\/p><p>I’m using ANSYS Workbench and inputting the viscoelastic properties through a snippet command, but I keep getting the following message from ANSYS:<\/p><\/p>\n

<p>For material 2, the harmonic viscoelastic model requires two elastic constants. The shear modulus experimental data will be used with the real Poisson’s ratio input via the MP or TB,ELAST command, and the imaginary part of Poisson’s ratio will be set to zero.<\/p><\/p><\/blockquote>\n

<p>I also tried switching to APDL and curve-fitting my data, but I encountered an error (figure 1).<\/p><p>I have this university project due by Saturday, 7th September. Can anyone help me understand what I might be doing wrong?<\/p><p>I’m attaching some pictures and the project files for reference.<\/p><p>https:\/\/drive.google.com\/file\/d\/1Ydu3UY5QfyiOYddeTG1R1v5Aod7wCV8u\/view?usp=drive_link<\/p><p> <\/p><\/p>\n","protected":false},"template":"","class_list":["post-381643","topic","type-topic","status-publish","hentry","topic-tag-full-harmonic","topic-tag-viscoelastic-material-1","topic-tag-viscoelastic-simulation-2"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["103129","40063","262422"],"_bbp_author_ip":["193.136.33.236"],"_btv_view_count":["289"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["381643"],"_bbp_forum_id":["27791"],"_bbp_engagement":["40063","103129","262422"],"_bbp_voice_count":["3"],"_bbp_reply_count":["6"],"_bbp_last_reply_id":["382450"],"_bbp_last_active_id":["382450"],"_bbp_last_active_time":["2024-09-12 09:57:43"]},"test":"castrohenrique0208gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/381643","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\/381643\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=381643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}