Non-linear Static Analysis

 

In the modeling phase, you have the option to specify the configurations for non-linear static analysis. Non-linear static analysis serves various purposes, including:

 

Advance Design software conducts calculations for both linear and non-linear analysis, with the exception of structures that incorporate cable elements, which exclusively require non-linear analysis.

A non-linear static family can consist of multiple scenarios or cases. The parameters for non-linear static analysis are defined within the properties window of the Static non linear load case.

 

How to create a non-linear static analysis family

 

Non-linear static analysis

Non-linear static analysis family

 

 

 

How to select non-linear analysis type

In the properties window of the Static non linear load case, Settings category, select the appropriate Calculation controlled by option:

 

How to select the static cases for the static non-linear analysis

  1. In the properties window of the Static non linear load case, Settings category, click Analyses options > , to display the Non Linear Analysis Options dialog box.

  1. In the Non Linear Analysis Options dialog box, click Add / Remove analyses to display the Select the static analyses dialog box and select the cases for the non-linear analysis:

Select the static analyses dialog box

Select the static cases for the static non-linear analysis

 

  1. From the Available analyses list, select the cases to add.

    Tip

  1. Enter the coefficient value in the Coefficient field.

  2. Click the Add button to place them in the Selected analyses list, which will be used for the non-linear analysis.

  3. Click OK to apply and close.

 

Selection options

 

How to configure the static non-linear analysis

The selected cases appear in the Non Linear Analysis Options dialog box. For each case, the non-linear analysis options can be configured. Depending on which control method has been selected, different are displayed:


a) Non-linear controlled by load increments 

 

Non Linear Analysis Options dialog box

Configure the non-linear analysis options - Load increments

 

 

Add/Remove analyses: opens the Select the static analyses dialog box which allows the selection of load cases and combinations for the non-linear analysis.

 

Load case or combination

 

Incrementation

 

Save results

 

Update stiffness

 

Convergence: the solver iterates to achieve equilibrium at each step of the analysis. Equilibrium is achieved when the magnitude of the force error is smaller than the convergence tolerance. The convergence tolerance for energy, force and displacement can be viewed or modified. Each of the parameters can be modified at the same time for all selected load cases and combinations by using the Apply to selected items function:

 

b) Non-linear controlled by displacement increments

 

Non Linear Analysis Options dialog box

Configure the non-linear analysis options - Displacement increments

 

NOTE: Below are mentioned only the parameters different from the case of load increments.

 

Displacement control node

 

Note: A point must be previously defined at the location where it is wanted to monitor the displacement. For each load case, a different point can be used.

 

Define a point to be used as a control node

Define a point to be used as a control node

 

 

How to delete non-linear static analyses

 

 

See Also

 

Related Topics