Langford Analytic · Knowledge Base

Composite Failure Verification Reference

A quick reference for composite damage model verification — single-element tests, coupon tests, mesh sensitivity, energy and failure mode.

Advanced Damage & Failure3 min read
referenceverificationcomposite damagesingle-elementcouponmesh sensitivityfailure mode

Verification Hierarchy

  • Single-element: initiation, softening, energy = G_c/l_c, damage variable
  • Coupon: ultimate load, damage pattern, post-peak behaviour
  • Mesh sensitivity: two mesh densities — results should be similar
  • Energy: total damage energy consistent with G_c × crack area
  • Failure mode: predicted mechanism matches observed mechanism
  • Test hierarchy: material → coupon → element → subcomponent → component