ATENA

  • ATENA is Software for Analysis of Concrete and Reinforced Concrete Structures

  • ATENA simulates real behavior of concrete and reinforced concrete structures including concrete cracking, crushing and reinforcement yielding.

  • ATENA gives engineers the power to check and verify their concrete stuctures in a user friendly and unique graphical enviroment

  • ATENA has over 300 installations worldwide (Germany, Japan, USA, Finland, UK, Italy, South Korea, China, Australia, Thailand, India, …)

  • ATENA is a new generation of the established finite element software SBETA
CERVENKA CONSULTING
Predvoje 22, 162 00 Praha 6
Czech Republic
Phone: +420 220 610 118
E-mail: cervenka@cervenka.cz
http://www.cervenka.cz
Sole Indian Distributor :
Computer Solutions
"SHRI SAI KRIPA"
 56, Motilal Nehru Road, Kolkata-700 029
Phone: +91-33- 24540005
Fax: +91-33- 24755420
 
Advanced Tool for Engineering Nonlinear Analysis
Software for Analysis of Concrete and Reinforced Concrete Structures
 

What is ATENA?
  • ATENA simulates real behavior of concrete and reinforced concrete structures including concrete cracking, crushing and reinforcement yielding.
  • ATENA gives engineers the power to check and verify their concrete stuctures in a user friendly and unique graphical enviroment
  • ATENA has over 300 installations worldwide (Germany, Japan, USA, Finland, UK, Italy, South Korea, China, Australia, Thailand, India, …)
  • ATENA is a new generation of the established finite element software SBETA.
 
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Pre - processing -> FE - solution -> Post - processing
  • Pre - processing - unique modeling of reinforcement detailing
  • FE - solution - unique realtime visualisation of results
  • Post - processing - unique crack visualisation
   

Why to use ATENA?


  • Simulation of reinforcement detailing around an extremely loaded girder with large openings (supermarket in Prague, Czech Republic)

    ATENA is an ideal tool for checking reinforcement detailing of complicated D-regions.

  • Simulation of experiments - Asin 1999

    ATENA is an ideal tool for experimentalist to support their research by easy to use and advanced simulation methods.

  • Design economical structures – make use of force redistribution and save on reinforcement

    ATENA automatically considers internal force redistributations due to cracking, which may result in reinforcement savings.

  • ATENA used to assess damages due to settlement of a historical infilled reinforced concrete frame building in Prague (build 1937)

    ATENA is the best tool for the assessment of existing buildings or bridges.
   

Example of ATENA applications

  • Analysis of prestressed bridges


 
 
 
  • ATENA is used to analyze reinforcement detailing and pier deflections in a train bridge
   
TECHNICAL SPECIFICATION
basic font = basic software features, italic font = optional modules

FINITE ELEMENTS
-2D Isoparametric elements, quadrilateral, triangular. Axisymmetrical elements.
-3D solid elements: tetrahedron, brick, wedge. Low- and high-order. Shells (layered). Beams (fiber).
-Truss elements for reinforcement.
-Spring supports.
-External cable elements
-Interface elements.
MATERIAL MODELS
-2D SBETA concrete model, also for high strength and SFRC: smeared cracks, crack-band, fracture-energy- based softening, Kupfer's compressive failure, variable shear retention, strength reduction of cracked concrete.
-3D fracture-plastic concrete model based on Menetrey-Willam law: smeared cracks, fracture-energy based softening, non-associated plasticity, user defined functions, variable parameters.
-Reinforcement bi-linear and multi-linear. Reinforcement with bond.
-Von Mises plasticity for metals.
-Drucker-Prager plasticity with associated/non-associated flow rule for rock and soil.
-Bazant M4 microplane concrete.
-Reinforcement cyclic.
-Interface with Mohr-Coulomb material law.
-Isotropic elastic.
-Non-linear springs.
-Fire-exposed material.
-Creep and shrinkage (Bazant, Eurocode, ACI)
-Transport of heat and moisture

LOADING
-Load cases: body forces, loading forces, supports, prescribed deformations, temperature, shrinkage, pre-stressing.
-Load steps: combination of load cases, solution methods.
-Arbitrary load history in steps, non-proportional, cyclic.
-Construction process.

SOLUTION METHODS
-Direct and sparse solver of equations.
-Newton-Raphson and modified Newton-Raphson.
-Arc-length. Line-search.
-Tangential and elastic stiffness predictors.
GRAPHICAL USER ENVIRONMENT
-2D GUE. Graphical user environment: pre-processing (geometrical modeling, reinforcement (bars, smeared), automatic meshing, material properties, loading and supports, solution methods, monitoring), solution (non-linear FE solution, graphical monitoring, restart), post-processing (iso-lines, iso-areas, rendering, vectors, tensors, cracks, response diagrams, cuts/sections, internal forces (M,N, T), user-defined numerical output).
-3D GUE. Graphical user environment: pre-processing (geometrical modeling, reinforcement (bars, smeared), copy and move, automatic meshing, material properties, loading and supports, solution methods, monitoring solution direct or sparse iterative, graphical monitoring, restart), post-processing (iso-lines, iso-areas, rendering, vectors, tensors, cracks, response diagrams, cuts/sections, user-defined numerical output).
-AtenaWin. General semi-graphical user interface for ATENA for solution and post-processing of 2D and 3D models. Requires input text files.
-GID interface (GID -general finite element pre- and post-processor). Prepares input file to AtenaWin.
-FEMAP Interface (FEMAP general finite element pre- and postprocessor). FEMAP can be used to prepare 3D models for ATENA and for post-processing of ATENA results. Prepares input file to AtenaWin.

EQUIPMENT
Minimum: PC with MS Windows XP/Vista/2000, 512 MB RAM memory and 40 GB hard disk.
Recommended: MS Windows XP, 2GB RAM memory, 120 GB hard disk, graphics card with resolution 1280x1024 and Open GL 3D hw-acceleration.
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