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<html xmlns:mml = "http://www.w3.org/1998/Math/MathML" lang = "en"><head><meta charset = "UTF-8"/><meta name = "copyright" content = "(C) Copyright 2020"/><meta name = "DC.rights.owner" content = "(C) Copyright 2020"/><meta name = "DC.type" content = "topic"/><meta name = "abstract" content = "Sizing optimization is well established for linear models. Whereas in the context of nonlinear structural analysis, sizing optimization is less robust, often failing due to solver convergence issues. Therefore, a proper optimization setup is required. Within this section, guidelines are presented in order to build stable optimization setup for sizing optimization. In addition, these guidelines can assist the user to address the issues during the optimization run."/><meta name = "description" content = "Sizing optimization is well established for linear models. Whereas in the context of nonlinear structural analysis, sizing optimization is less robust, often failing due to solver convergence issues. Therefore, a proper optimization setup is required. Within this section, guidelines are presented in order to build stable optimization setup for sizing optimization. In addition, these guidelines can assist the user to address the issues during the optimization run."/><meta name = "DC.format" content = "HTML5"/><meta name = "DC.identifier" content = "tso-m-usr-sizing-NonLin-sb"/><meta name = "DC.language" content = "en"/><link rel = "stylesheet" type = "text/css" href = "../DSDocUI_XML34.css"/><title>Optimization of Structures with Nonlinear Behavior</title>
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<a name = "hj-top"> </a><table class = "table1" id = "table11"><tr><td><table class = "DocHeader"><tr><td class = "DocHeader1" colspan = "2"><h1>Optimization of Structures with Nonlinear Behavior</h1></td></tr><tr><td class = "DocHeader4" colspan = "2"/></tr><tr><td class = "DocHeader3" colspan = "2"><table class = "DocThemeIntro" id = "table12"><tr><td class = "Intro1"><p class = "header"><p class = "abstract">
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Sizing optimization is well established for linear models. Whereas in the context of nonlinear structural analysis, sizing optimization is less robust, often failing due to solver convergence
issues. Therefore, a proper optimization setup is required. Within this section, guidelines are presented in order to build stable optimization setup for sizing optimization. In addition, these
guidelines can assist the user to address the issues during the optimization run.
</span>

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</p><hr class = "header"/></td></tr><tr><td class = "Intro2"><span class = "run-in">In this section:</span><br/><ul class = "ulthemes"><li><a title = "This chapter describes the different effects of various nonlinearities in structural analysis." href = "tso-m-usr-sizing-NonLin-Effects-sb.htm">Effects of Nonlinearities</a></li><li><a title = "This section reviews useful options and possibilities to get a more robust optimization." href = "tso-c-usr-sizing-NonLin-ReviewOptions.htm">Review of Available Options and Possibilities</a></li><li><a title = "This section presents guidelines to build a stable optimization setup for sizing optimization. These guidelines can help the user to address the issues during the optimization run." href = "tso-c-usr-sizing-NonLin-Guidelines.htm">Guidelines for Optimization of Structures with Nonlinear Behavior</a></li><li><a title = "This section summarizes the guidelines for optimization of structures with nonlinear behavior." href = "tso-c-usr-sizing-NonLin-Summary.htm">Summary of Guidelines</a></li></ul></td></tr></table></td></tr></table>



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