CLT Suite

Analysis Engine Active

Classical Laminate Theory

Build custom composite layups and perform rigorous classical laminate theory analysis with matrices, stiffness, ε, and σ computations.

Active Laminate

0 plies•0.0000" thick

Applied Loads

Force and Moment Resultants

Load Convention

Composite_Laminates.xlsm parity

Textbook CLT moment sign convention (Mx, My, Mxy). Nx, Ny, and Nxy use the same sign in both conventions; only Mx, My, and Mxy flip sign.

Coordinate System Reference

CLT coordinate system showing ply orientations (+45°, 0°, -45°, 90°) with 1-2 material axes, x-y laminate axes, and z through-thickness direction

1-2: material (ply) axes · x-y: laminate axes · z: through-thickness

Force Resultants (lb/in)

Nx

Ny

Nxy

Moment Resultants (in-lb/in)

Mx

My

Mxy

Analysis Runs Automatically

Results update in real-time. Use Workbook view or Export CSV to match Composite_Laminates.xlsm outputs.

Shared Laminate Builder

Laminate Properties

Input Allowables Format

Toggle between Strain (με) and Stress (ksi). Values in the stack and limits will convert on-the-fly.

Default Ply Preset

Target Temp (°F)

Name	ET1 (Msi)	EC1 (Msi)	ET2 (Msi)	EC2 (Msi)	G12 (Msi)	ν12	t (in)	σ₁t (ksi)	σ₁c (ksi)	σ₂t (ksi)	σ₂c (ksi)	σ₁₂s (ksi)	r_c Tens (in)	r_c Comp (in)	K_br Tens	K_br Comp

Save as Custom Preset

Save the current material properties under a name so you can reuse them without re-entering values.

Quick Add Ply Angle

Bulk Add Plies

@

Ply Stack 0 plies

Use the quick-add buttons above to build your layup stack.

Total Thickness:0 in