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Newsletter April 2016

Dear friends of ATENA software,

the first quarter of 2016 is already behind us, and probably all of you are fully busy with new interesting projects. We would like to use this opportunity to inform you about the latest development on our ATENA software, which we strive to continuously develop in order to bring the latest achievements in the numerical modeling of reinforced concrete to your desk.

NEW VERSION OF ATENA SOFTWARE

ATENA v5.3.3 Release

 

At the beginning of April we have released a new update ATENA 5.3.3. This version includes mainly minor improvements and modifications of the previous version 5.3.2, based on the customer feedback after about 6 months since its release. The main new features of ATENA version 5.3 are:

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(a) improved robustness and validation of ATENA for seismic and dynamic analyses
(b) support for the new Austrian tunnelling method
(c) improved 3D beam elements for efficient modelling of large scale high rise building frames
(d) improvements in high-cycle fatigue model for concrete in tension
(e) support for parametric definitions in ATENA input/command file
(f) new extrude option enables pure brick meshes in extruded regions in ATENA 3D
(g) probabilistic module SARA/RLACS available also for ATENA Science
(h) plus many other improvements, corrections and bug fixes in ATENA 2D/3D, GiD Interface, ATENA Science and ATENA Studio.

Main changes since 5.3.2:

  • Updated ATENA Engineering 2D/3D (IsoShell support, problem fixed when program started from SARA)
  • Updated reliability module SARA and SARA Science
  • Updated ATENA-GiD scripts
  • Problem fixed when running analysis with Interface Elements in ATENA Engineering 3D
  • Smaller fixes and changes in the Kernel (reading old results, exceptions in multithreading, body and boundary loads with Arc Length)
  • Smaller fixes and changes in ATENA Studio (graphs)
  • New GiD version 12.0.8 included in the installation
  • New hardlock drivers included in installation: Hasp 7.41
  • Updated Examples
  • Updated Manuals

Run ATENA Update Check utility and see whether you are entitled to get the new ATENA version 5.3.3 for free.

In case you have not updated your HASP for the new ATENA version 5 yet, you can find the instructions here.

ATENA Success Stories

DI Tobias Huber

Bending moments cause deviation forces in concrete structures with kinked or curved surfaces. This action may decrease the loading capacity of the structure if no reinforcement is provided to cover the resulting tensile stresses. The absence of the required supplementary reinforcement is being investigated at the Institute for Structural Engineering, TU WIEN. Herefore large-scale bending tests of two saddle roof t-beams, with a total length of 14.0 metres, were performed. Both experiments showed the expected detachment of the compression flange before the flexural strength was reached. Due to the fact that the remaining cross section was able to carry the load, the loss of the flange did not lead to sudden failure.

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The tests were modelled using ATENA from Červenka Consulting with the model being calibrated to fit the load-deflection curve of the actual test. Comparing the load levels at first flexural crack, detachment of the flange and failure, the finite-element analysis showed good correlation to the test results. Therefore, it can be assumed that ATENA is able to fully map the load-bearing behaviour in this region which provides the possibility to investigate the stress state of the tested beams more precisely than with the attached conventional measurement systems. This allows further investigations with respect to variations of the concrete class and the corner angle to be carried out, without the need of additional big-scale experiments.

ATENA User Seminar 2016

Dear users of ATENA software,


we would like to invite you to our new format of ATENA Advanced User Seminar 2016. The seminar will take place in Prague, the Czech Republic on June 15-17, 2016. The content of the seminar has been rearranged compared to the previous years. We decided to concentrate on fewer topics, but provide a deeper coverage and more hands on experience with particular problems. Based on the feedback from our hotline support we selected several topics, where we expect that ATENA users could benefit most from more indepth explanation or background information.

For more information, please go to webpage.

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News on our research projects

SE-LAB – This research project was completed in January 2016. It was a cooperation between Cervenka Consulting, Institut für Bauinformatik TU Dresden and German leading designing company Leonhardt, Andrä and Partner. The goal of the project was to develop a Cloud/Grid-Based Virtual Laboratory for Non-Linear Probabilistic Structural Analysis. More details about the project are available on the website www.selab.eu. The cloud server for nonlinear and probabilistic simulation will be available on this website after the testing is fully completed. If you are interested to join our beta-testers please send a request to cervenka@cervenka.cz.

Fibre-LAB – this new project has received the Eurostars label and is expected to start in the middle of 2016. It is the cooperation between Cervenka Consulting s.r.o, Czech Republic and JKP Static, Hungary. The goal of the project is to develop a platform based on ATENA software for the design of fiber reinforced concrete structures using simulation prototyping. We are looking forward to cooperate with our Hungarian colleagues on enhancing the modeling and simulation capabilities for fiber reinforced materials, which are often used in new modern structures. This material with higher strength and ductility requires modern simulation tools in order to be fully exploited by designers and engineers.

Where You Can Meet Us

Future Events:

April 17-21, 2016
ACI Spring
Milwaukee, USA
Event website

April 28-29, 2016
Baukongress
Vienna, Austria
Event website

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May 23-25, 2016
Podzemní stavby
Prague, Czech Republic
Event website

May 29 - June 1, 2016
FraMCoS
Berkeley, USA
Event website

June 5-10, 2016
ECCOMAS Congress
Crete Island, Greece
Event website

June 22-24, 2016
CESB 16
Prague, Czech Republic
Event website

September 12-14, 2016
CONSEC 2016
Lecco, Italy
Event website

Recent Articles

KADLEC, L., ČERVENKA, V., UNCERTAINTY OF NUMERICAL MODELS FOR PUNCHING RESISTANCE OF RC SLABS, fib Symposium Copenhagen, 2015-05-04

PUKL, R., SAJDLOVÁ, T., NOVÁK, D., LEHKÝ, D., Fracture-Mechanical Parameters for Modeling of Quasi-Brittle Materials and Structures, Advanced Materials Research Vol. 1106 (2015) pp. 106-109, Trans Tech Publications, Switzerland

KABELE, P., PUKL, R., SAJDLOVÁ T.: The Issue of Numerical Analysis of Fibre Reinforced Concrete Structures, in: Proceedings of the Fibre Concrete 2015, CTU in Prague

PUKL, R., SAJDLOVÁ T.: Probabilistic Safety Assessment of Long-span RC Girders, in: Proceedings of the 11th CCC Congress Hainburg 2015, Czech concrete society

BALÁŽ, D., MAREK, M., PUKL, R., SAJDLOVÁ T.: Non-linear Analysis of SFRC Segmental Tunnel Linning, in: Proceedings of the 11th CCC Congress Hainburg 2015, Czech concrete society

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