Creating a global layup

For the ply-based process, you define layups’ global plies and how they drape on the model. You define global layups in the Layup Modeler dialog box by defining global plies and their sequence. You manage the defined global layups in the Simulation Navigator. The following graphic shows the nodes that are created in the Simulation Navigator.

Layups
Layup Offset
Top (0)
Middle (0)
Bottom (0)
Material Orientation
Default: First Ply
Layup 1
Ply 4 (symmetric Ply 1)
Ply 3 (symmetric Ply 2)
Ply 2
2D Objects (5)
Ply 1
2D Objects (6)
Cuts (1)
Layup 2
Ply 1 (extended from Layup 1)
Ply 5

After you define the global plies and their sequence, use Define Draping Data to open the Draping Data dialog box, which lets you define the meshed polygon faces and 2D elements that receive the ply, the fiber orientation of the ply, and any discontinuities in the fiber orientation of the ply. The draping solver can calculate the effect of model geometry to adjust fiber orientation for each element.

You assign each ply to a set of 2D elements and meshed polygon faces. The different plies in the layup may be assigned to the same objects, or to different ones. Each ply can have a different fiber orientation.

For the unidirectional and woven solvers, you can specify different draping starting location on the object faces and different direction, for each ply separately. You can create cut curves to reduce fiber shear, which causes a discontinuity in the fiber orientation on both sides of the cut.

You can create many global layups which contain plies that reference the same objects. However, only one global layup can be active for a given object. You can overcome this restriction in two ways:

• Extend existing plies into layups other than the layup in which they were originally created.

• Create a sublaminate by linking a global layup to another. Layups can contain several sublaminates, plies, and cohesive layers. Ceating sublaminates allows you to assign two or more layups to a 2D element or polygon face, but only the parent layup is active.

Layups
Layup Offset
Material Orientation
Layup 1
Layup 2
Layup 3
Layup 2
Layup 1

When your global layup is defined, you apply the layup to the model by creating a Laminate physical property that inherits the layup.

Validity of a global layup

You can edit a global layup freely regardless of its validity, as long as it is valid when the software checks. For example, you can modify the material properties or draping of a ply after it has been defined. The software checks the validity of a global layup only when you:

• Export the layup by solving or creating a solver input file.

• Right-click the layup and select Update or Force Update in the Simulation Navigator.

• Choose Laminates tab→Laminate group→Update Global Layups and Zones .

• Examine the model in post processing.

Caution:

Before you delete a material, be sure a global ply does not reference it. The software does not lock materials or provide warnings about material deletion for global plies.

Copy elements with global layups

Layups are copied if they are associated to 2D elements that are copied and translated, reflected, or projected. If you modify the original layup, the copied layup is shown as out of sync.

If you copy inflated 3D elements, all association to the plies is lost. The copied elements still point to the same extruded laminate physical property, but you need to manually define new properties for these 3D meshes in order to solve the model.

If you copy the source 2D elements, the software does not copy associated inflated elements. It copies only the 2D elements. To copy 3D elements that are inflated, copy the source 2D elements, and regenerate the inflation from the copied 2D elements and their copied layup.

Where do I find it?

Application	Pre/Post
Prerequisite	A FEM as the work partNote: Not supported in an AFEM.
Command Finder	Global Layup
Simulation Navigator	Right-click the Layups node→New Layup

How do I

Import a layup from a laminate physical property

Create a global layup

Create ply extensions

Create a ply section and its section curves

Learn more

Creating global plies

Working with global plies and global ply groups

Cohesive layers

Exporting the global layup to Fibersim

Draping global plies over the model

Layup offset

Working with imported layups

Creating ply sections and section curves

Ply-based workflow

Defining plies and a stacking sequence

Look up more details

Global layups and hand layup manufacturing

Ply extensions

Right-click commands for ply section nodes

Right-click commands for global layup nodes

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

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Creating a global layup, Simcenter 3D 2021.1 Series

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