Download ATENA Program Documentation Part 2

1 INTRODUCTION
This document describes the usage of the program ATENA 3D (ATENA 3D Graphical User
Interface), which is a part of the ATENA program system. This document is compatible with
the ATENA version 5.0.0 released in July 2013.
The ATENA program, which is determined for nonlinear finite element analysis of structures,
offers tools specially designed for computer simulation of concrete and reinforced concrete
structural behavior.
ATENA program system consists of a solution core and several user interfaces. The solution
core offers capabilities for variety of structural analysis tasks, such as: stress and failure
analysis, transport of heat and humidity, time dependent problems (creep, dynamics), and
their interactions. Solution core offers a wide range of 2D and 3D continuum models, libraries
of finite elements, material models and solution methods. User interfaces are specialized on
certain functions and thus one user interface need not necessarily provide access to all
features of ATENA solution core. This limitation is made on order to maintain a transparent
and user friendly user environment in all specific applications of ATENA.
ATENA 3D program is designed for 3D nonlinear analysis of solids with special tools for
reinforced concrete structures. However, structures from other materials, such as soils, metals
etc. can be treated as well. The program has three main functions:
1. Pre-processing. Input of geometrical objects (concrete, reinforcement, interfaces, etc.),
loading and boundary conditions, meshing and solution parameters.
2. Analysis. It makes possible a real time monitoring of results during calculations.
3. Post-processing. Access to a wide range of graphical and numerical results.
ATENA 3D is limited to stress analysis. It does not include other types of analysis, such as
creep and transport of heat and humidity. (These special analyses are made in applications of
GID, see separate Manuals).
This manual is devoted mainly to the description of all program functions. The questions of
the ATENA solution core and the theoretical background are mentioned only marginally and
are included in the other volumes of the ATENA documentation: ATENA Part 1 - Theory,
Part 6 - ATENA Input file. Although some examples are included in this manual to support
description of some functions, a systematic treatment of examples is not covered. It is also a
subject of a separate document ATENA Part 5 – Examples.
The functions are described in order as they appear in the in A3D windows. In this document
the abbreviation A3D is used for the program ATENA 3D Graphical User Interface.
ATENA Engineering - 3D - User´s Manual
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