Stability of a structure exposed to
Meeting codes & standards
Structural fires often result in the loss of serviceability and inherent financial loss. But, more importantly – the risk of loss of life. As a structural or geotechnical engineer you are obliged to certify a structures safety, providing sufficient means of escape and time to evacuate.
Building codes and standards help engineers with rules and recommendations, but do not provide an optimal design or are applicable to all types of structures. In these cases numerical analysis becomes indispensable.
One stop solution for structural thermo-stress analysis
Predicting thermo-stress resilience and stability of the structure
DIANA offers you all the necessary functionality to assess your structures behavior under fire in a single analysis – or in combination with other events such as earthquakes.
During fire, thermal strains develop within the structure, these add to the strains from mechanical loading, shrinkage and creep. Materials also undergo thermal degradation of their mechanical properties, this may result in damage to the structure: cracking in the concrete and plastification in steel.
Dedicated features for structural fire analysis
- Coupled thermo-stress with automatic conversion of temperature field to mechanical loading
- Possibility to add/remove elements or change boundary conditions during the analysis
- Heat transfer by conduction, convection and radiation
- Temperature and time dependence of thermal material properties
- Boundary elements for environmental conditions
- Automatic changing to lower order elements from stress to flow analysis to guarantee strain compatibility from temperature field loads to stress analysis
- Isotropic and orthotropic thermal expansion
- Isotropic elasticity with temperature dependent thermal expansion, Young’s modulus and Poisson’s ratio
- Isotropic plasticity with temperature dependent yield stress: Tresca and Von-Mises
- Isotropic plasticity with temperature dependent cohesion: Mohr-Coulomb and Drucker-Prager
- Smeared crack models with:
- Temperature dependence of the tension cut-off and tension softening
- Temperature dependence of shear behavior
- Temperature dependence of compression functions
- Discrete crack model with temperature dependence of the tension cut-off and tension softening
- Visco-elasticity with temperature dependent Young’s modulus: Power law,
- Kelvin and Maxwell chains
- Transient creep
Choose your subscription
We provide a wide range of flexible licensing modules and subscription plans for advanced calculations. Our Sales Team are always more than happy to discuss your requirements and can make individualized proposals based on your specific needs.