{"id":463192,"date":"2026-09-01T14:44:29","date_gmt":"2026-09-01T14:44:29","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/i-am-attempting-to-set-bolt-pretension-via-python-based-extension\/"},"modified":"2026-09-01T14:44:29","modified_gmt":"2026-09-01T14:44:29","slug":"i-am-attempting-to-set-bolt-pretension-via-python-based-extension","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/i-am-attempting-to-set-bolt-pretension-via-python-based-extension\/","title":{"rendered":"I am attempting to set bolt pretension via Python based extension"},"content":{"rendered":"<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; # Create Beam Preload in the selected analysis<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pret = ExtAPI.DataModel.Project.Model.Analyses[0].AddBoltPretension()<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; #Set Scoping Methodto Beam Connection<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pret.InternalObject.GeometryDefineBy = 19<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; beamID=allbeams[yyy].ObjectId<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pret.InternalObject.BeamConnectionSelection=beamID<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; #The Beam Connection definition is now set<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; beam_pretensions=DataModel.GetObjectsByType(DataModelObjectCategory.BoltPretension)<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; beam_pretensions[yyy].Name=Beam_name<\/p>\n<p>Ansys does not adhere to their &#8220;object.ScopingMethod&#8221; here&#8230;.with this arcane code you set, nevertheless I am successfully creating the Pretension objects.<\/p>\n<p>However I do not know how to set the STEP (load, lock etc) and the actual preload. The documentation is scarce on this.<\/p>\n<p>Can someone help?<\/p>\n","protected":false},"template":"","class_list":["post-463192","topic","type-topic","status-publish","hentry","topic-tag-beam-pretension-1","topic-tag-mechanical"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"# Create Beam Preload in the selected analysis pret = ExtAPI.DataModel.Project.Model.Analyses[0].AddBoltPretension() #Set Scoping Methodto Beam Connection pret.InternalObject.GeometryDefineBy = 19 beamID=allbeams[yyy].ObjectId\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/i-am-attempting-to-set-bolt-pretension-via-python-based-extension\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" 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