Finite element analysis (FEA) is a tool for determining structural stresses, strains and deformations based on applied loading, structure geometry and material.

Nine Dot Solutions has vast experience in finite element analysis techniques and has produced and verified many finite element models, ranging from small single components to large heavy structures and machinery. NX Nastran is typically used to produce and analyse FEA models. Our workstations are specifically built for efficient solving, allowing for extra detail in our FEA models.

When constructing finite element models all relevant components are added to accurately reproduce structural stiffness and the effect of interacting components. This produces more accurate results at interfaces which are typically critical, as boundary conditions can rarely reproduce that stiffness interaction accurately.

Typical FEA activities

Although finite element analyses are typically used to evaluate structure stresses, the following types of analyses are available:

  • Stress/strain analysis
  • Modal analysis, where structure natural frequencies are determined
  • Buckling analysis based on Euler buckling modes
  • Durability analysis which incorporates different fatigue models
  • Limit state analysis to limit state-based codes such is SANS 10162-1 (in PROKON)

These activities are included in other services such as designs and audits.