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2.6  Advanced usage

• DOE & general organization in steps

2.6.1  DOE & general organization in steps

The SDT fe_range architecture supports the generic definition of numerical experiments.

• 10 Import linear model (SDT/OpenFEM format)
• 20 Define non-linear properties NLdata for a group of elements (non-linear springs CBUSH, contact surfaces, zero thickness element, StressCut)
• 30 Define computational range and options
• 40 Solve and save results
• 50 Post-process automatically

model =  % SDT/OpenFEM format
     Node: [2x7 double]
      Elt: [6x9 double]
    Stack: {2x3 cell}
model.Stack = % List of properties
   % Case : Store boundary conditions and load 
    'case'    'Case 1'        [1x1 struct]
   % Pro : properties of a group of non-linear elements
    'pro'     'nl_pro2001'    [1x1 struct]
NL=stack_get(model,'','nl_pro2001','get')
      type: 'p_spring'
        il: [2001 2.2503e-02] % Usual elastic properties
    NLdata: [1x1 struct]

NL.NLdata=  % Input format for non linearity data (CLIMA-HBM)
        type: 'nl_inout'
          Fu: '@(x)-.01*x.^3'
        Sens: 'cubicSpring'
     keepLin: 0