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 # clt\_query

 Last update: 16.07.2026 

<a id="compolyx.SamplingPoint.clt_query"></a>

## SamplingPoint.clt\_query(query='layup', offset\_is\_middle=True, consider\_coupling\_effect=True)

Returns the properties of the classical laminate theory:

### Parameters

- query: Query parameter (see below).
- offset\_is\_middle: Whether to offset the reference surface to the mid-plane of the laminate. This has an influence on the laminate stiffness calculations.
- consider\_coupling\_effect: Whether to consider the coupling effect or not (B-Matrix). It’s only of relevance for the laminate engineering constants.

### Options

- layup: Returns the layup of the laminate (modeling, production, and analysis plies). This is the default.
- laminate\_properties: Young’s, flexural, and shear moduli of the laminate.
- polar\_properties: E1, E2, and G12 depending on the laminate orientation.
- text\_labels: Returns a list with the material names, angles, and thicknesses.
- stiffness\_matrix: Returns the laminate stiffness matrix (ABD).
- compliance\_matrix: Returns the lamiante compliance matrix (inverse of ABD).
- laminate\_forces: Returns a dict with the laminate forces Nx, Ny, Nxy, Mx, My, Mxy, Qx, and Qy. Offset is middle is always true for this evaluation.

Usage: : ```pycon

> > > se.clt\_query(query='polar\_properties')

```

```