{"id":397861,"date":"2024-12-18T14:09:10","date_gmt":"2024-12-18T14:09:10","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/temperature-loads-too-much-penetration-and-element-turning-upside-down\/"},"modified":"2024-12-18T14:09:10","modified_gmt":"2024-12-18T14:09:10","slug":"temperature-loads-too-much-penetration-and-element-turning-upside-down","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/temperature-loads-too-much-penetration-and-element-turning-upside-down\/","title":{"rendered":"temperature loads &#8211; too much penetration and element turning upside down"},"content":{"rendered":"<p>&lt;p&gt;Hello,&nbsp;&lt;\/p&gt;&lt;p&gt;I am doing an analysis of tubes under high tempratures (varying across length) as shown below. Tubes have some sliding connection to each other (sliding inner and sliding outer) and . They can expand vetically. Lateraly sliding parts have some gap, which allows some movement. Tubes are fixed at top. SMall tie&nbsp;&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/18-12-2024-1734529157-mceclip1.png\" width=\"383\" height=\"784\" \/> &nbsp; &nbsp;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/18-12-2024-1734529214-mceclip2.png\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Inner sliding is bonded with one tube and outer sliding with adjuscent tube. I have created frictional contact between two sliding parts with very small friction (0.02), I have kept pinball radius also large so intial contact can be created. There is also few more friction contact which are close and can come in contact.&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/18-12-2024-1734530376-mceclip5.png\" width=\"258\" height=\"304\" \/>&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/18-12-2024-1734530160-mceclip4.png\" width=\"358\" height=\"380\" \/>&lt;\/p&gt;&lt;p&gt;Analysis settings are like following&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/18-12-2024-1734530093-mceclip3.png\" \/>&lt;\/p&gt;&lt;p&gt;But I am getting follwoing errors at first step.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/18-12-2024-1734530717-mceclip7.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/18-12-2024-1734530734-mceclip8.png\" \/>&lt;\/p&gt;&lt;p&gt;I have tried to change normal stiffness fraction but still not able to solve. I fixed few connection which is not correct situation but it was giving lot of penetration at few location and some frictional contact were not working.&lt;\/p&gt;&lt;p&gt;Mesh is fine at the contacts, but still I am getting this error.&nbsp;&lt;\/p&gt;&lt;p&gt;How to fix this issue&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-397861","topic","type-topic","status-publish","hentry","topic-tag-ansys-mechanical"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello, I am doing an analysis of tubes under high tempratures (varying across length) as shown below. Tubes have some sliding connection to each other (sliding inner and sliding outer) and . They can expand vetically. Lateraly sliding parts have some gap, which allows some movement. Tubes are fixed at top. 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