Structure analyses and computing 

FEM calculations and analyses, limit values calculations taking into consideration plasticity, fatigue damage calculation and other analytical methods. 

Files to download
Photogallery
CONTACT

Ing. Radek Doubrava, Ph.D.
Head of Structure Analyses Group, VZLÚ
Tel: +420 225 115 134
e-mail: doubrava@vzlu.cz

 

Structure analyses and computing
WE OFFER:

Operational loads evaluation on statistical base

  • single- or multi-parametric spectrum of structural loads and stresses in critical areas
  • fatigue test loading process generation

Strength calculations

  • stress/strain mapping of linear material behaviour
  • limit stage assessments respecting plasticity and fracture mechanics
  • simulations of stability and buckling behaviour in time structure distortions simulation (crash cases)
  • fatigue damage calculation
  • simulation of fatigue crack propagation
  • fastener elements and structural joints substantiation

Aeroelastic calculations

  • flutter, control reversal, whirl flutter, gust and turbulence aeroelastic response
  • critical speeds of aeroelastic phenomenon
  • FE modal analysis (mode shape, natural frequency, damping estimation, active control of aeroelastic phenomenon)

Structure analyses

  • structure strength and mass optimization,
  • fatigue life assessments based on safe life, fail safe or damage tolerance design approaches
  • residual strength of structures
  • expertises of structural part fractures from the point of view of their cracking mechanism
EQUIPMENT:
  • commercial software CATIA V5, FEMAP, MSC PATRAN, MSC NASTRAN, ABAQUS, LMS TecWare,
    LMS FALANCE, AutoVue, MITCalc
  • firmware PREDIKCE
  • optical systems for contact-less strain and stress measurements enabling the computational method verification
  • static and fatigue test lab enabling the strength calculations support
  • material properties database
STANDARD SPECIFICATIONS:
  • EASA CS (JAR), FAR, CAGI aeronautical airworthiness requirements (and others)
  • ČSN, ASTM, MIL standards
CUSTUMERS:
  • companies involved in design and development of aircraft and land transport vehicles
  • machine-building companies having need of strength and fatigue assessment of their products or structural parts
  • universities and research establishments

Stress map of deformed test sample