Creating a Finite Element Model

OptiStruct can be used to analyze the mechanical behavior of an elastic structure under a given set of loads and boundary conditions. A number of solution sequences are available, each of which is described in the Finite Element Analysis section of the User's Guide. The available solution sequences are:

·        Linear Static Analysis

·        Nonlinear Quasi-static Gap Analysis

·        Linear Buckling Analysis

·        Normal Modes Analysis

·        Frequency Response Analysis (direct and modal)

·        Random Response Analysis

·        Transient Response Analysis

·        Transient Response Analysis by Fourier Transformation

·        Inertia Relief Analysis

The solution sequence used by a subcase is automatically determined by the contents of the subcase information section. For all of these solution sequences, it is necessary to define the following:

-   the geometry of the structure

-   the material properties of the structure

-   the applied loads and boundary conditions

This information is provided in the bulk data section of the Input File.

The following pages detail the process of creating a finite element model:

Discretizing the geometry of the structure

Creating a Mesh

Defining Geometric and Material Properties

Defining Loads and Boundary Conditions

Creating Subcases

Defining I/O Options