Željana Nikolić

Some aspects of 2D and/or 3D numerical modelling of reinforced and prestressed concrete structures

Purpose – To provide an insight in one relatively simple and efficient numerical model for analysing reinforced and prestressed concrete structures, and to raise a discussion leading to the creation of one universal and robust 3D algorithm.Design/methodology/approach – A new numerical model for analysing reinforced and prestressed concrete structures is developed and main theoretical details are described to aid the understandings. The approach is clear, easily readable and the body of the text is divided into logical sections starting from theoretical explanations ending in the large number of different practical examples.Findings – Provides information about developing new and relatively simple numerical model for analysing reinforced and prestressed concrete structures, indicating what can be improved. Recognises the lack of knowing real behaviour of 3D concrete and starts a discussion on it.Research limitations/implications – The knowledge of the 2D and especially 3D concrete behaviour is still poor a...

Numerical analysis of masonry structures by finite-discrete element model

This paper presents numerical model based on the finite-discrete element method for the analysis and prediction of the collapse of masonry structures with mortar joints and dry stone masonry structures. The model consists of a numerical model in a finite element, contact interaction algorithm which simulates the interaction between stone blocks in dry joint and numerical model in an interface element which simulates the behaviour of the mortar joints and unit-mortar interface. The verification of the model was performed on examples by comparing it with the known numerical and experimental results from literature.