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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>Shape Optimization Based on a Durability Analysis</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">
    <span class = "shortdesc">The homogenization of the stresses on a components surface
often indirectly leads to a reduction of the maximum damage in these
areas. In <span class = "ph">SIMULIA Tosca Structure</span>,
a durability analysis can be included in the optimization loop. The
direct use of damage results for the homogenization strategy leads to
a minimization of the maximum damage in the critical areas. In <span class = "ph">SIMULIA Tosca Structure</span>,
the damage values must be provided as equivalent stress values. The
coupling of a durability analysis enables the consideration of the load-time
histories. The notions fatigue, durability, and life analysis will all
be used in the following as the same thing.</span>

  </p>

</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 = "The supported durability solvers are discussed within this section." href = "tso-c-usr-solver-durab-solvers.htm">Supported Durability Solvers</a></li><li><a title = "For the consideration of damage data during optimization, a durability analysis is performed after each finite element solver run in the optimization loop. The results of the finite element analysis are directly read in the durability solver and a damage calculation is performed. The results of the damage analysis are provided in a special result block. Then Tosca Structure modifies the components surface based on the damage distribution." href = "tso-c-usr-solver-durab-workflow.htm">Workflow</a></li><li><a title = "Within this section, the durability solver FEMFAT® is discussed." href = "tso-c-usr-solver-durab-femfat.htm">FEMFAT®</a></li><li><a title = "Within this section, the durability solver fe-safe is discussed." href = "tso-c-usr-solver-durab-fesafe.htm">fe-safe</a></li><li><a title = "Within this section, remarks concerning ONF-format are summarized." href = "tso-c-usr-solver-durab-onf.htm">ONF</a></li></ul></td></tr></table></td></tr></table>

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