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ANSYS Tutorial: ANSYS Composite PrepPost

ANSYS Composite PrepPost (ACP) is an integrated software package designed for efficient composites engineering. ACP integrates leading composite-specific technology, state-of-the-art pre- and post-processing with the numerical simulation capabilities of ANSYS. This article shows some of the main features and how to use the ACP.

Firstly, ACP is fully associative with all major CAD-systems and has direct access to the complete range of Workbench Pre-processing capabilities. It has also direct access to the full ANSYS simulation and solver technology.

As shown in the figure below, the ACP utilizes a powerful graphical user interface with OpenGL visualization and model tree.


Material Data

The material data is divided into materials, fabrics, stackups and sub laminate properties, see the figure below. After you have defined the material data you can save these in a material data bank. This way you can avoid the process of inputting the material definition every time you start a new project.


When the material data is described the remaining property to define is the orientation of the plies and the reference direction which defines the fiber direction.

The composite structure can be divided into sets with individual orientation. This way draping can be utilized in areas where it is preferable. In addition, it is easy to reinforce the structure without exiting the ACP software. The draping includes a flat-wrap functionality and fiber-angle correction which is useful for capturing the manufacturing process.


There are three different ways to post-process the results. The figure below shows the first approach; that is, the critical failure mode and critical layer can be visualized for each element. This is an effective way to evaluate critical areas.

In an alternative approach ACP can show the result for each ply of the laminate. This can be convenient in some cases.

Arbitrary combinations of failure criteria at all integration points of all layers can be visualized. The available failure criteria are:

  • Max. strain, max. stress, Tsai–Wu, Tsai–Hill, Hashin, LaRC, Cuntze
  • Puck 2-D and 3-D for UD and weave materials
  • Core failure and face sheet wrinkling for sandwich structures

The third method to evaluate the results is through element sampling, which enables ply-based strain, stress and Inverse Reserve Factors (IRF) visualization, see the figure below.

In addition, if some modifications have to be sent to third parties, you can easily define a ply-book in which the main information will be stored.