In the paper we propose an implicit time integration scheme of the third order for flexible multibody dynamics. The scheme is prepared with special care considered to rotational degrees of freedom, here represented by unit quaternions. To obtain the desired order two implicit stages are combined with additional introduction of correction function that compensates the non-commutativity of rotations. The efficiency of proposed approach is demonstrated by numerical examples.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 7512417In 2016 programme group members Dejan Zupan and Tomaž Hozjan served as editors of the Proceedings of Congress of Slovenian Society of Mechanics. The goal of these annual proceedings is to present the achievements of Slovenian researchers working in the field of mechanics.
C.02 Editorial board of a national monograph
COBISS.SI-ID: 286428416As a well-recognized expert in the fields of mechanics and civil engineering Igor Planinc has been invited on national radio to present his work to wider audience.
D.10 Educational activities
COBISS.SI-ID: 7459169Intumescent coating is a popular fire protection material for steel structural elements with beneficial temperature dependent thermal and mechanical properties. The analysis of the heat flux through the intumescent coating appears to be complicated, due to expansion and chemical reactions in material. In the paper an improved numerical method for the thermal analysis of intumescent coatings is presented. Temperature dependency on both the thermal and the mechanical properties of intumescent coating, expansion of the material and the chemical reaction are taken into account. The method is validated by comparing numerical and experimental results for two different intumescent coatings.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 7546209The appearance of natural fires in buildings and related damages to structure have always presented uncertain phenomena. Therefore, the failure of the structure exposed to natural fire cannot be predicted with certainty. In this paper the use of reliability analysis to assess the failure probability of curved glulam beam is presented. Thermal and mechanical analyses are performed with finite element method. Failure probability is determined by the Monte Carlo technique, where variance reductions method, i.e. Latin hypercube sampling, is used. At the end the results of the reliability analysis with the natural fire considered are compared with the results with ISO fire curve considered in analysis.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 7988833