SEMIP software for
semi-probabilistic approach

SEMIP is a standalone software tool containing state-of-art semi-probabilsitic methods for estimation of coefficient of variation of the quanity of interest together with normative methods implemented in Eurocode for design and assessment of structures using non-linear finite element method. The software contains three functionalities: definition of stochastic model from experiments/normative documents, estimation of coefficient of variation using probabilsitic methods and comparison of design values of resistance obtained by various techniques.

The first part of the SEMIP software deals with input random variables and definition of stochastic model. SEMIP offers the efficient recalculation of quantiles and statistical moments of random variables from given data (experimental results or characteristics values etc.).

Once the stochastic model is defined it is possible to use SEMIP for efficient estimation of statistical moments of structural resistance by various probabilistic techniques (Taylor Series Expansion, Numerical Quadrature etc.).

The final part of SEMIP software deals with definiton of design values of resistance satisfying given safety requirements by various techniques and their comparison. Obtained results are well visualized in HD graphs.

The software PCE-UQ was developed with financial support of Technology Agency of the Czech Republic under project No. TH04010138.

Theoretical background

Methods implemented in SEMIP and corresponding results were described in several scientific papers:

L. NOVÁK; D. NOVÁK, On Taylor Series Expansion for Statistical Moments of Functions of Correlated Random Variables, Symmetry volume 12, ISSN:2073-8994, 2020.

L. NOVÁK; D. NOVÁK, Safety format for non-linear analysis with correlated material characteristics. AIP Conference Proceedings. AIP conference proceedings. New York, USA: American Institute of Physics, 2019. s. 1-4. ISBN: 978-0-7354-1854-7. ISSN: 0094-243X.

L. NOVÁK; D. NOVÁK, R. PUKL, Probabilistic and semi-probabilistic design of large concrete beams failing in shear. In Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications. London: Taylor and Francis Group CRC Press, 2019. ISBN: 9781138386969.

D. NOVÁK ; L. NOVÁK; O. SLOWIK; A. STRAUSS, Prestressed concrete roof girders: Part III – Semi-probabilistic design. In Proceedings of the Sixth International Symposium on Life-Cycle Civil Engineering (IALCCE 2018). 1. London: CRC press, Taylor and Francis group, 2018. s. 510-517. ISBN: 9781138626331.

Applications of SEMIP

Prestressed concrete girders:

The very first application of SEMIP software was during long term research of precast prestressed concete roof girders failing in shear. The main task was estimation of design value of resistance satisfying given safety requirements.

If you are interested in software SEMIP and its possibilities for your applications/research, please contact main developer Lukas Novak:

Lukas Novak
novak.l@fce.vutbr.cz
Institute of structural mechanics
Faculty of civil engineering
Brno University of Technology
Czech republic

Sfotware for semi-probabilistic approach

Application of non-linear finite element analysis is chalenging in context of design and assesment of structures from probabilistic point of view. Therefore, it is necessary to employ advanced semi-probabilistic methods for estimation of design values satisfying given safety requirements. The SEMIP software provides complete solution for semi-probabilistic approach in engineering applications.

Uncertainty quantification
of engineering problems

is a scientific field of great importance focused on analysis of uncertainties in mathemtical models. It is important especially in engineering field in order to optimize the design of structures and reflect given safety requirements.