Defining laminate properties

You can define the following properties in the Laminate Properties group.

Stacking recipe

Specifies a predefined stacking sequence which operates on the plies in the Ply Layup tab. In a ply-based process, you must set the stacking recipe to Inherited from layup.

Specifies the location of the reference plane with respect to the layup.

Determines whether adjacent elements belong to the same zone or to two different zones in the ply-based process. The software computes element zones by comparing the tolerance to the relative change in ply angles between adjacent elements. A smaller the tolerance produces more zones and physical properties. You can define zone angle tolerance only when the Stacking Recipe is set to Inherited from layup.

Specify the direction of the 0° angle for the fibers (1) and the direction in which the plies are stacked from bottom to top (2) for the Solid Laminate physical property, with respect to material orientation.

Reference temperature

Is used to compute temperature-dependent material properties for laminate validation. It is also exported to the NASTRAN PCOMP, PCOMPG, PCOMPG1, PCOMPS, and PSHELL cards.

Ply failure theories

Are used by the validation, the optimization, the advanced post reporting, and the Nastran solver to compute ply failure indices, strength ratios, and margins of safety.

Interlaminar failure

Controls which stress limits are used to compute the interlaminar failure.

When you select Use Material Allowables, Laminate Composites uses the material allowables of the ply that is below the bond.

When you select Use Laminate Allowables, Laminate Composites uses the allowable strength in shear that you define for the whole laminate. You can define the allowable normal strength for bonding only for the Solid Laminate physical property. You set the allowable strength in shear in the Shear Stress for Bonding box and the allowable normal strength in the Normal Stress for Bonding box.

For the Laminate physical property, you define a single ply failure theory for all plies.

Nastran uses the ply and interlaminar failure theories for failure index and strength ratio computation. If Nastran does not support the selected theory, the exporter leaves the failure theory field blank and Nastran does not compute the failure metrics.

How do I

Define a reference plane location

Specify a user-defined failure theory

Learn more

Defining plies and a stacking sequence

Validating laminate properties and strength

Advanced post processing of laminate results

Predefined laminate physical property (Simcenter Samcef)

Look up more details

Stacking recipe

Reference plane location

Relationship between shell mesh and reference plane

Symmetric and balanced laminate

Predefined Laminate Physical Property dialog box (Simcenter Samcef)

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Related Topics

Laminates failure analysis

Defining laminate properties, Simcenter 3D 2021.1 Series

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