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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>Settings</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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Different settings can be made to control the speed and convergence
behavior of the sizing optimization algorithms. Default values are available
which have been tried and tested on many occasions. Other algorithm
settings for the various optimization algorithms can be selected using
the <code class = "ph codeph">OPT_PARAM</code> command.
</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 = "It is possible to apply a simple mode tracking function for the modal analysis using the modal assurance criterion (MAC) including a mass weighting." href = "tso-c-usr-sizing-Settings-ModeTrack.htm">Mode Tracking</a></li><li><a title = "The shell thicknesses of the structure are updated using the method of Convex Separable Approximations (CSA), see Svanberg (2002). Normally, the update method suggested in Svanberg (2002) is stable. However, if the design responses are very sensitive, it is suggested to use a more conservative update method that requires more optimization iterations." href = "tso-c-usr-sizing-Settings-Opt.htm">Optimizer Parameters</a></li><li><a title = "Similar to topology optimization numerical instabilities resulting in checker-board effects can be controlled using filtering." href = "tso-c-usr-sizing-Settings-SetFilter.htm">Settings of the Mesh Filter</a></li></ul></td></tr></table></td></tr></table>




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