Models & Workflow Manual · 3

Predict effective ply properties

Online chapter revision 2026-10-03. Complete download edition 2026-10-03.

MicromechanicsChapter concept map · not simulation results
INPUTFibers + matrix
MODELHomogenization
OUTPUTEffective ply

Use micromechanics when architecture and constituent properties form part of the question. The selected model converts that description to an effective material within stated assumptions about geometry, orientation and interaction. Examine the constituent limits before accepting a plausible-looking modulus, and retain measured strength data separately where the model does not establish allowables.

3.1 Translate constituents into effective material behavior.

Workflow / 03.2 Micromechanics

Choose a released architecture-compatible homogenization model, inspect its reference ply properties, and carry those properties into the laminate.

Connected model layer

Micromechanics model map

Select a block to explore its theory or workflow. View the complete Model Map

Micromechanics layer of the original master workflow

One cell. A whole fabric.

Explore plain, twill and satin yarn surfaces in Micro, Live Stack, CREATE and DISCOVER. Switch between one repeat and 2 × 2 or 3 × 3 cells, then rotate and zoom. CREATE carries the selected weave and woven bridging model into SIMULATE, subject to your license.

DISCOVER: repeat a twill unit cell into a fabric patch.
DISCOVER: repeat a twill unit cell into a fabric patch.
CREATE: carry the weave into a connected laminate recipe.
CREATE: carry the weave into a connected laminate recipe.

Captured from the Workbench components in a local preview, September 17, 2026. Missing yarn dimensions are inferred and listed under Geometry inputs & assumptions. These are periodic surface illustrations—not measured textile CAD, solid exports or a mesh-based solver. Effective properties are calculated separately by the selected micromechanics model.

Workbench exercise preview

01.01 · Rule of mixtures: fibre volume fraction

Level 1
Foundation
Est. 15 min
Exercise workflow · Open full-size map ↗

Only blocks on the exercise path are shown. This changes the view only, not the exercise records.

01.01 · Rule of mixtures: fibre volume fraction · Used records in the universal fixed layout · not solved results
∑ Used models & submodels

Only models assigned to records used by this exercise are listed here. The full-layout option preserves the supplied starter records; no Workbench records are changed.

Rule of mixtures · T700 / EP180 UD · Unidirectional lamina

One compatible homogenization model per Micro recipe. Separate recipes compare models; their predictions are not blended.

∑ Theory & assumptions
Data travelling between blocks

Materials → Micro
Constituent stiffness, strength, density and thermal / moisture properties.

Models → Micro
Applied model assignment: Rule of mixtures. Model parameters and formulation are used by Micro.

Open the copied Micro record and identify its fibre and matrix materials.

Models: Rule of mixtures · Voigt · Reuss

Study scope and limitations

Ideal continuous, aligned reinforcement with zero voids. This is a teaching comparison, not a measured material allowable.

03.2 / Workflow focus

Connected engineering record
01

Compatible formulations

The Models browser lists rule-of-mixtures variants, Halpin–Tsai, Chamis, Mori–Tanaka, Hashin–Rosen, self-consistent, woven bridging and Cox elastic short-fiber choices. Architecture determines which choices are available.

02

Short-fiber scope

Cox shear-lag elastic studies use prescribed geometry and orientation. The event-driven Henry–Pimenta RVE and its stochastic discontinuous-fiber failure route are not enabled in the hosted release.

03

Ply-property handoff

The selected Micro recipe supplies reference properties to its linked plies. Shared material or Micro edits can change multiple laminate calculations.

04

Explore and compare

Use an exercise or supported property sweep to compare model assumptions, constituent limits and sensitivity. Predicted strengths and teaching defaults are not qualified allowables.

Use this workflow in Workbench: interactive Blocks, record selections and connection controls →

Connected model layer

Micromechanics · released model connections

Select a model family to follow its inputs, results, theory and exercise. All model families ↗

Follow the connections

Materials & micromechanics

Inputs

Constituents & architecture

Constituents, architecture, fractions and calibrated modifiers

Choose a model family

Homogenization

Results / handoff

Ply properties

Reference ply properties for each linked laminate ply

Representative exercise: this map shows its supplied records and active connections, not every possible configuration of the model family.

Exercise workflow · Open full-size map ↗

Only blocks on the exercise path are shown. This changes the view only, not the exercise records.

Micromechanics · Used records in the universal fixed layout · not solved results

Micromechanics

One compatible homogenization model per Micro recipe. Use separate recipes for comparisons; they are not combined in a single ply.

Model choices and Workbench location

Models browser → Micromechanics · source: Micro

  • Halpin–Tsai
  • Rule of mixtures
  • Modified rule of mixtures
  • Chamis
  • Mori–Tanaka
  • Hashin–Rosen
  • Self-consistent scheme
  • Woven fabric bridging
  • Cox shear-lag elastic

Chapter review

Confirm both the predicted property and the recipe that produced it before assigning the ply to a laminate.

References and source sections

References are retained with the formulations they support. Software instructions describe implementation scope; a cited source does not establish independent validation of a CDS calculation.

Detailed online sources