ATENA version 5.6

ATENA version 5.6

The new features are:

  • Many changes, improvements, and optimizatons in the kernel (boundary and connection conditions for 2D shells and 1D beams, chlorides+carbonation)
  • Vector and tensor display in ATENA Studio
  • Smaller fixes and improvements in ATENA Studio (selecting by spacebar, saving last step when interrupted, diagrams, iteration number display, checking for .inp file changes)
  • Many fixes and improvements in the kernel (connecting 1D beams and 2D shells to other elements, shells and beams, solvers, LCS)
  • Added option IGNORE_REF_HEIGHT, IGNORE_REF_WIDTH for 1D and 3D beams
  • Updated SARA
  • Updated ATENA-GiD scripts, see GiD\Problemtypes\Atena\Readme.txt
  • Updated Examples
  • Updated Manuals
  • Updated Installer

The new version brings many new and exciting features based on the suggestion and feedback of our ATENA users.


Improved support for large scale analysis:

The analysis presented by Niklas Bagge in the success story section in our October Newsletter shows that engineers often need to effectively perform nonlinear analysis of complex and complete structural systems. In ATENA this is usually accomplished by optimal combination of beam, shell and solid elements. In the new ATENA version we have introduced new features to simplify this approach and namely to make it more effective during the model development and faster in the computational time. This namely involves the following new features:
- faster and more effective definition and detection of the contacts between the various element types, i.e. contacts "beams to solids" or "shell to solid", etc.
- improvements in the definition of complex beam profiles in GiD preprocessor



    Nonlinear modeling of complete building section in ATENA software


Schematic description of the new ATENA durability
and corrosion model

New models for durability and reinforcement corrosion:

The parameters of the surrounding environment can be specified as a new boundary condition. This typically includes chloride concentration, CO2 content or relative humidity. Based on this information the chloride or carbonation propagation is calculated in time taking into account the possible presence of cracks. When the propagation front reaches reinforcement, the corrosion model is activated, which results in the reduction of reinforcement area. This effect can be included in any reliability or strength assessment in ATENA calculation.

Fiber reinforced concrete structures:

Analysis of fiber reinforced concrete structures, where one of the main problems the user typically need to solve is the proper definition of the fiber reinforced concrete material parameters. This process typically involves an inverse analysis of standard material tests. This process is in detail described in this tutorial with an application to segmental tunnel lining.



Top: reinforcement corrosion after 30 years
(Nougawa bridge Japan)
Bottom: single beam failure mode in ULS case after 80 years

Improvements in post-processing:

The program ATENAStudio, which supports unique run-time visualization, has been extended with new post-processing and visualization features based on the requirements and input from you:

- improvements and enhancements in the visualization of diagrams of internal forces (i.e. M, N, V)
- new features for vector and tensor plots
- improvements and enhancements in the definition of user-defined color scales.

Maintenance and support

We strongly support our users in their analytic work with ATENA. Support is mainly provided by email and phone calls. The solution to many questions can be found also in our FAQ & Online Forum. New versions of ATENA are released every year.

Maintenance is provided for free for one year after the software purchase. After that is it can be prolonged at annual rate coresponding to 15% of the program price.

  • System requirements

    • Minimum: PC with MS Windows XP SP2 / Windows Vista SP1, 512 MB RAM, 40 GB HDD, GPU with OpenGL 1.1 and 1024x768 resolution.
    • Recommended: PC with MS Windows 7, 64 bit 8 GB RAM, 500 GB HDD, GPU with OpenGL and HW acceleration, designed for CAD (nVidia FX, AMD FireGL, etc.)

    Full product specifiaction & system requirements


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