{"id":18570,"date":"2025-10-08T15:06:18","date_gmt":"2025-10-08T15:06:18","guid":{"rendered":"https:\/\/support.buildsoft.eu\/?post_type=ht_kb&#038;p=18570"},"modified":"2025-10-08T15:10:02","modified_gmt":"2025-10-08T15:10:02","slug":"error-object-reference-not-set-to-an-instance-of-an-object-at-buildsoft-tmaterial-get_poisonratio","status":"publish","type":"ht_kb","link":"https:\/\/support.buildsoft.eu\/fr\/knowledge-base\/error-object-reference-not-set-to-an-instance-of-an-object-at-buildsoft-tmaterial-get_poisonratio\/","title":{"rendered":"Error: Object reference not set to an instance of an object at Buildsoft.TMaterial.get_PoisonRatio(&#8230;)"},"content":{"rendered":"<p>When starting the elastic analysis <img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-7895\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2022\/09\/KnopElastischeAnalyse.png\" alt=\"\" width=\"20\" height=\"20\" \/> in Diamonds, you get the error:<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-18572 aligncenter\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2025\/10\/GetPoisson.png\" alt=\"\" width=\"500\" height=\"274\" \/><\/p>\n<h2>Solution<\/h2>\n<ul>\n<li>You&rsquo;ve used a material in your model for which you forgot to define Poission&rsquo;s ratio.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>When starting the elastic analysis in Diamonds, you get the error: Solution You&rsquo;ve used a material in your model for which you forgot to define Poission&rsquo;s ratio.<\/p>\n","protected":false},"author":3,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":[],"ht-kb-category":[65],"ht-kb-tag":[],"_links":{"self":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb\/18570"}],"collection":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/comments?post=18570"}],"version-history":[{"count":2,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb\/18570\/revisions"}],"predecessor-version":[{"id":18573,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb\/18570\/revisions\/18573"}],"wp:attachment":[{"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/media?parent=18570"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb-category?post=18570"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/fr\/wp-json\/wp\/v2\/ht-kb-tag?post=18570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}