This section describes when and how to work with the Solid Model feature in ACP (Pre). In this context we are talking about the solid model extrusion and not the lay-up mapping feature within the Imported Solid Model.

In the case of thick composites, the layered shell theory can cause significant errors in the obtained results. In some cases it is necessary to work with 3D models (solid models). ACP has the advanced features to generate layered solid models based on the shell lay-up definitions. Based on the shell mesh and the ACP composite definitions, ACP generates layered solid elements representing one-to-one the composite part. Drop-Offs, staggering and tapering are also considered. In addition the solid model extrusion allows to define extrusion directions, boundary curves, and cut-outs. Finally, virtual cracks (fracture analysis) and contacts between plies can be modeled by Interface Layers.

In general we recommend working with the "standard" Solid Model because the extrusion approach allows you to generate a one-to-one solid model. If this is not feasible, then the lay-up mapping approach within the Imported Solid Model is a great alternative. Modeling full cross-section composites such as composite springs or turbine blades, for instance. Example analyses for both approaches are available: Composite Solid Model and Analysis of a Mapped Composite Solid Model.