Global layups and hand layup manufacturing

The global layup approach simulates the hand layup manufacturing workflow, in which pieces of resin-impregnated unidirectional or woven fabric (1) are sequentially positioned on a mold (2). Plies are positioned and oriented to meet design requirements.

Single pieces that are draped on the mold can be modeled in the FEM as a single ply even if they span two meshes or cover only part of a mesh.

You can define the draping process for each ply as starting at the same location on the mold, or at different locations. You must define fiber orientation for each ply at the start point. You can also define fiber orientation for each ply as a unique rotation from an initial direction defined for a set of plies in a global layup.

A ply may contain a cut or you can define a ply splice:

• You can model a cut in the ply fabric by defining a element edges as cut curves where the draping is difficult or impossible to perform. This allows the draping algorithm to adjust the fiber orientations independently on the two sides of the cut curve. The structural properties of the ply are not affected.

• To create a ply splice, split a polygon face using modeling commands or in the FEM, and manually partition the original ply into 2 or more distinct plies. This will result in a discontinuity in both the fiber orientation around the splice.

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 a global layup

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

Ply extensions

Right-click commands for ply section nodes

Right-click commands for global layup nodes

Quick links

Command reference

Pre/Post video examples

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Global layups and hand layup manufacturing, Simcenter 3D 2021.1 Series

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