u2.01.11 Instructions for using the manipulation of fields and tables

Summary:

The objective of this document is to provide the user with some recipes related to manipulating fields or tables.

In this document, the cases of manipulation of the following fields are described:

• Continue with a STAT_NON_LINE calculation after removing or adding elements to the model (e.g. digging a tunnel, installing layers of a dam);

• Define a state of initial constraints (or internal variables) based on « analytical formulas »;

• Apply pressure to a part (not provided for in the mesh) of the edge of a 3D structure;

• Calculate the integral of the stresses or of a quantity derived on the edge of a 3D structure;

• Read a constant field by elements and project it to the nodes of the mesh.

And for the tables:

• Evaluate damping on the calculated natural frequencies.

• 1. How to continue with a STAT_NON_LINE calculation after removing or adding elements to the model
  • 1.1. Problem
  • 1.2. Adding items to the model
• 2. How to define a state of initial constraints (or internal variables) with analytical formulas
  • 2.1. Objective
  • 2.2. Fabrication of an analytical constraint field
  • 2.3. Fabrication of a non-zero field of internal variables
• 3. How to apply pressure to a restricted part (not meshed exactly) of the edge of a 3D structure
  • 3.1. Step 1: Create the pressure field on the disk
  • 3.2. Step 2: projection of the pressure field from the disk to the calculated structure
  • 3.3. Step 3: Create the load
  • 3.4. Command file
• 4. How to calculate the integral of the stresses or of a quantity derived on the edge of a 3D structure
  • 4.1. Objective
  • 4.2. Recipe
  • 4.3. Commands used
• 5. How to reread a constant field by elements and project it to the nodes of the mesh
  • 5.1. Objective
  • 5.2. Method
• 6. How to use the value of the calculated natural frequencies to assess damping