Causing substantial disaster to densely populated area more and more frequently, DIANA is proud to contribute to the safety of modern and historical structures with its powerful range of analysis functionalities.
Contemporary structures in earthquake-sensitive areas are designed to sustain earthquakes without danger of damage or collapse. DIANA provides you with the capability to not only design modern structures to modern codes but also to assess and retrofit older structures to contemporary standards, ensuring new and existing architecture withstands the most severe consequences.
For many non-standard or altered over time structures, earthquake design or assessment requires dynamic finite element analysis.
DIANA offers solutions for both simple linear dynamic analysis, and full nonlinear dynamic analysis – taking into account the loading history of the structure. With their enormous power, earthquakes are often accompanied by water impacts resulting from tsunamis, collapse of neighboring structures, liquefaction of the ground, or fire. This is where DIANA’s powerful solvers come into play – allow you to carry out a whole range of different analysis types in one command.
Types of earthquake analysis
Fluid structure interaction
All dynamic analysis procedures can be used in combination with fluid-structure interaction effects. At a fluid-structure interface a full coupled acceleration-pressure matrix is calculated for normal displacements on the interface. This interaction matrix accounts for effect of fluid dynamics to the structure in the structural analysis. Frequency dependent effects, e.g. fluid compressibility and boundary damping, can be defined with a range of analysis types.
Element types
All structural element types can be used in all available dynamic analysis procedures
Mass & damping
Specific load & initial conditions
Specific analysis functionality
Nonlinear materials for earthquake analysis
