TY  - JOUR
AU  - Petrović, Milica
AU  - Pavićević, Darko
AU  - Ilić, Isidora
AU  - Terzović, Jefto
AU  - Šekularac, Nenad
PY  - 2023
UR  - https://raf.arh.bg.ac.rs/handle/123456789/1536
AB  - The subject of this paper is the elements of a timber lamella structure: the lamellae and their joints. The lamella structure is usually in a diamond pattern, so it relies on additional elements to achieve stability. The analysis of the elements precedes the design of a prototype of a timber lamella vault. The characteristic diamond pattern can be kept for the design of rigid or semi-rigid joints. The design of the joints is challenging, so this paper focused on the analysis and systematization of joints designed for timber lamella structures. The existing timber lamella joints were classified and analyzed based on five parameters: eccentricity, load capacity, the number of elements, easiness of assembly, and adaptability to the circular cylindrical surface, to systemize the existing joints and propose a new one. A design for a new joint was proposed based on the presented joints. The systematization and discussion gave a comparison of all joints, their advantages, and limitations. The conclusion was that the geometry of a circular cylinder and the type of elements for the prototype confirmed all the benefits of the historical lamella structures: uniformity of elements, easy assembly, and economical design.
PB  - Basel : MDPI
T2  - Buildings
T1  - Elements of a Timber Lamella Structure: Analysis and Systematization of Joints
VL  - 13
IS  - 4
SP  - 885
DO  - 10.3390/buildings13040885
ER  - 

@article{
author = "Petrović, Milica and Pavićević, Darko and Ilić, Isidora and Terzović, Jefto and Šekularac, Nenad",
year = "2023",
abstract = "The subject of this paper is the elements of a timber lamella structure: the lamellae and their joints. The lamella structure is usually in a diamond pattern, so it relies on additional elements to achieve stability. The analysis of the elements precedes the design of a prototype of a timber lamella vault. The characteristic diamond pattern can be kept for the design of rigid or semi-rigid joints. The design of the joints is challenging, so this paper focused on the analysis and systematization of joints designed for timber lamella structures. The existing timber lamella joints were classified and analyzed based on five parameters: eccentricity, load capacity, the number of elements, easiness of assembly, and adaptability to the circular cylindrical surface, to systemize the existing joints and propose a new one. A design for a new joint was proposed based on the presented joints. The systematization and discussion gave a comparison of all joints, their advantages, and limitations. The conclusion was that the geometry of a circular cylinder and the type of elements for the prototype confirmed all the benefits of the historical lamella structures: uniformity of elements, easy assembly, and economical design.",
publisher = "Basel : MDPI",
journal = "Buildings",
title = "Elements of a Timber Lamella Structure: Analysis and Systematization of Joints",
volume = "13",
number = "4",
pages = "885",
doi = "10.3390/buildings13040885"
}

Petrović, M., Pavićević, D., Ilić, I., Terzović, J.,& Šekularac, N.. (2023). Elements of a Timber Lamella Structure: Analysis and Systematization of Joints. in Buildings
Basel : MDPI., 13(4), 885.
https://doi.org/10.3390/buildings13040885

Petrović M, Pavićević D, Ilić I, Terzović J, Šekularac N. Elements of a Timber Lamella Structure: Analysis and Systematization of Joints. in Buildings. 2023;13(4):885.
doi:10.3390/buildings13040885 .

Petrović, Milica, Pavićević, Darko, Ilić, Isidora, Terzović, Jefto, Šekularac, Nenad, "Elements of a Timber Lamella Structure: Analysis and Systematization of Joints" in Buildings, 13, no. 4 (2023):885,
https://doi.org/10.3390/buildings13040885 . .

TY  - JOUR
AU  - Petrović, Milica
AU  - Ilić, Isidora
AU  - Mijatović, Svetislav
AU  - Šekularac, Nenad
PY  - 2022
UR  - https://raf.arh.bg.ac.rs/handle/123456789/1253
AB  - This paper presents timber lamella structures applied to the circular cylinder surface when
all lamellae axes intersect at the nodes. To achieve the uniformity of all elements in this structure,
the geometry of the structure must be carefully designed. The main methods for the research are
graphical and numerical methods for geometric design and a prototype construction for a specific
geometric pattern. The methods are discussed for their ease of replication, as well as the possibility of
reinterpretation on other surfaces, while the prototype design and construction give insight into the
process from design to execution. The combination of these methods allows for a thorough analysis of
the geometry for lamella structures. The analysis shows that geometrical design must begin from the
whole to the lamella, and that the number of element types in the structure depends on the disposition
of the elements and the angle of the pattern. The discussion shows the advantages and limitations of
the proposed methods, while the conclusions give the guidelines for the implementation of lamella
structures into new design projects.
PB  - Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Buildings
T1  - The Geometry of Timber Lamella Vaults: Prototype Analysis
VL  - 12
IS  - 10
SP  - 1653
DO  - 10.3390/buildings12101653
ER  - 

@article{
author = "Petrović, Milica and Ilić, Isidora and Mijatović, Svetislav and Šekularac, Nenad",
year = "2022",
abstract = "This paper presents timber lamella structures applied to the circular cylinder surface when
all lamellae axes intersect at the nodes. To achieve the uniformity of all elements in this structure,
the geometry of the structure must be carefully designed. The main methods for the research are
graphical and numerical methods for geometric design and a prototype construction for a specific
geometric pattern. The methods are discussed for their ease of replication, as well as the possibility of
reinterpretation on other surfaces, while the prototype design and construction give insight into the
process from design to execution. The combination of these methods allows for a thorough analysis of
the geometry for lamella structures. The analysis shows that geometrical design must begin from the
whole to the lamella, and that the number of element types in the structure depends on the disposition
of the elements and the angle of the pattern. The discussion shows the advantages and limitations of
the proposed methods, while the conclusions give the guidelines for the implementation of lamella
structures into new design projects.",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Buildings",
title = "The Geometry of Timber Lamella Vaults: Prototype Analysis",
volume = "12",
number = "10",
pages = "1653",
doi = "10.3390/buildings12101653"
}

Petrović, M., Ilić, I., Mijatović, S.,& Šekularac, N.. (2022). The Geometry of Timber Lamella Vaults: Prototype Analysis. in Buildings
Multidisciplinary Digital Publishing Institute (MDPI)., 12(10), 1653.
https://doi.org/10.3390/buildings12101653

Petrović M, Ilić I, Mijatović S, Šekularac N. The Geometry of Timber Lamella Vaults: Prototype Analysis. in Buildings. 2022;12(10):1653.
doi:10.3390/buildings12101653 .

Petrović, Milica, Ilić, Isidora, Mijatović, Svetislav, Šekularac, Nenad, "The Geometry of Timber Lamella Vaults: Prototype Analysis" in Buildings, 12, no. 10 (2022):1653,
https://doi.org/10.3390/buildings12101653 . .

TY  - JOUR
AU  - Terzović, Jefto
AU  - Kontić, Ana
AU  - Ilić, Isidora
PY  - 2022
UR  - https://raf.arh.bg.ac.rs/handle/123456789/1480
AB  - In the proposed design concept, laminated glass and laminated plexiglass, as “unconventional
materials”, are considered as a filling in a steel frame on which they overlap by the intermediate rubber layer, thereby forming a composite assembly. In this way vertical elements of stiffening are formed, capable for reception of seismic force and integrated into the structural system of the building. The applicability of such a system was verified by experiments in laboratory conditions where the experimental models based on laminated glass and laminated plexiglass had been exposed to the cyclic loads that simulate the seismic force. In this way the load capacity of composite assemblies was tested for the effects of dynamic load that was parallel to assembly plane. Thus, the stress intensity to which composite systems might be exposed was determined as well as the range of the structure stiffening referring to the expressed deformation along with
the advantages of a particular type of filling compared to the other one. Using specialized software whose operation is based on the finite element method, a computer model of the structure was created and processed in the case study; the same computer model was used for analysing the problem in the first phase of the design process. The stiffening system based on composite assemblies tested in laboratories is implemented in the computer model. The results of the modal analysis and seismic calculation from the computer model with stiffeners applied showed an efficacy of such a solution, thus rounding the design procedures for aseismic stiffening by using unconventional materials.
PB  - Kalahari Journals
T2  - International Journal of Mechanical Engineering
T1  - Aseismic Stiffening of Architectural Buildings as Preventive Restoration Using Unconventional Materials
VL  - 7
IS  - 6
UR  - https://hdl.handle.net/21.15107/rcub_raf_1480
ER  - 

@article{
author = "Terzović, Jefto and Kontić, Ana and Ilić, Isidora",
year = "2022",
abstract = "In the proposed design concept, laminated glass and laminated plexiglass, as “unconventional
materials”, are considered as a filling in a steel frame on which they overlap by the intermediate rubber layer, thereby forming a composite assembly. In this way vertical elements of stiffening are formed, capable for reception of seismic force and integrated into the structural system of the building. The applicability of such a system was verified by experiments in laboratory conditions where the experimental models based on laminated glass and laminated plexiglass had been exposed to the cyclic loads that simulate the seismic force. In this way the load capacity of composite assemblies was tested for the effects of dynamic load that was parallel to assembly plane. Thus, the stress intensity to which composite systems might be exposed was determined as well as the range of the structure stiffening referring to the expressed deformation along with
the advantages of a particular type of filling compared to the other one. Using specialized software whose operation is based on the finite element method, a computer model of the structure was created and processed in the case study; the same computer model was used for analysing the problem in the first phase of the design process. The stiffening system based on composite assemblies tested in laboratories is implemented in the computer model. The results of the modal analysis and seismic calculation from the computer model with stiffeners applied showed an efficacy of such a solution, thus rounding the design procedures for aseismic stiffening by using unconventional materials.",
publisher = "Kalahari Journals",
journal = "International Journal of Mechanical Engineering",
title = "Aseismic Stiffening of Architectural Buildings as Preventive Restoration Using Unconventional Materials",
volume = "7",
number = "6",
url = "https://hdl.handle.net/21.15107/rcub_raf_1480"
}

Terzović, J., Kontić, A.,& Ilić, I.. (2022). Aseismic Stiffening of Architectural Buildings as Preventive Restoration Using Unconventional Materials. in International Journal of Mechanical Engineering
Kalahari Journals., 7(6).
https://hdl.handle.net/21.15107/rcub_raf_1480

Terzović J, Kontić A, Ilić I. Aseismic Stiffening of Architectural Buildings as Preventive Restoration Using Unconventional Materials. in International Journal of Mechanical Engineering. 2022;7(6).
https://hdl.handle.net/21.15107/rcub_raf_1480 .

Terzović, Jefto, Kontić, Ana, Ilić, Isidora, "Aseismic Stiffening of Architectural Buildings as Preventive Restoration Using Unconventional Materials" in International Journal of Mechanical Engineering, 7, no. 6 (2022),
https://hdl.handle.net/21.15107/rcub_raf_1480 .

TY  - CONF
AU  - Petrović, Milica
AU  - Ilić, Isidora D.
AU  - Džombić, Neda M.
AU  - Šekularac, Nenad D.
PY  - 2021
UR  - https://raf.arh.bg.ac.rs/handle/123456789/1726
AB  - This paper presents a structural design methodology in order to find the best possible solution of protective structures for active archeological sites. Besides the typical demands for construction on these sites which arise from the typology and the level of protection of cultural heritage, active archeological sites require a structural solution with regard to time and direction of further excavation. The hypothesis is that modular spatial structures which are easily assembled or disassembled, and have the ability to be extended in one or more directions, are the most functional solution for these sites. This paper shows the analysis of several types of spatial structures based on the requirements of active archeological sites. It explores the possibilities of structural systems derived from multiplication of one primary element of structure, their material and joints between elements. The most adequate assembly of the entire structure is supposed to be found in the interdependency of the load and the dimension of the element’s cross- section, in a suitable geometric configuration. The focus of the analysis is on structures made of short-bearing elements which have the advantage of the efficiency of transport and assembling. One of the design criteria for this methodology is that the structural system itself looks simple and elegant in order to complement the archeological site. This is shown in the paper through the analysis of patterns in which these structures are assembled. The aim is to correlate the position of the elements in the structural system, the dimensions of cross-section, and the lengths of the straight beams which form the spatial structure in order to find a simple, functional and economical solution for protective structures at active archeological sites. The conclusion shows the advantages and disadvantages of the design methodology presented in the paper, as well as the discussion about the analyzed spatial structures. This type of methodology that systematizes various design criteria from different fields of research engages the problem of design of protective structures for archeological sites and opens up new questions for further research.
PB  - SAHC
C3  - 12th International Conference on Structural Analysis of Historical Constructions (SAHC)
T1  - Design of Protective Structures for Active Archeological Sites
DO  - 10.23967/sahc.2021.074
ER  - 

@conference{
author = "Petrović, Milica and Ilić, Isidora D. and Džombić, Neda M. and Šekularac, Nenad D.",
year = "2021",
abstract = "This paper presents a structural design methodology in order to find the best possible solution of protective structures for active archeological sites. Besides the typical demands for construction on these sites which arise from the typology and the level of protection of cultural heritage, active archeological sites require a structural solution with regard to time and direction of further excavation. The hypothesis is that modular spatial structures which are easily assembled or disassembled, and have the ability to be extended in one or more directions, are the most functional solution for these sites. This paper shows the analysis of several types of spatial structures based on the requirements of active archeological sites. It explores the possibilities of structural systems derived from multiplication of one primary element of structure, their material and joints between elements. The most adequate assembly of the entire structure is supposed to be found in the interdependency of the load and the dimension of the element’s cross- section, in a suitable geometric configuration. The focus of the analysis is on structures made of short-bearing elements which have the advantage of the efficiency of transport and assembling. One of the design criteria for this methodology is that the structural system itself looks simple and elegant in order to complement the archeological site. This is shown in the paper through the analysis of patterns in which these structures are assembled. The aim is to correlate the position of the elements in the structural system, the dimensions of cross-section, and the lengths of the straight beams which form the spatial structure in order to find a simple, functional and economical solution for protective structures at active archeological sites. The conclusion shows the advantages and disadvantages of the design methodology presented in the paper, as well as the discussion about the analyzed spatial structures. This type of methodology that systematizes various design criteria from different fields of research engages the problem of design of protective structures for archeological sites and opens up new questions for further research.",
publisher = "SAHC",
journal = "12th International Conference on Structural Analysis of Historical Constructions (SAHC)",
title = "Design of Protective Structures for Active Archeological Sites",
doi = "10.23967/sahc.2021.074"
}

Petrović, M., Ilić, I. D., Džombić, N. M.,& Šekularac, N. D.. (2021). Design of Protective Structures for Active Archeological Sites. in 12th International Conference on Structural Analysis of Historical Constructions (SAHC)
SAHC..
https://doi.org/10.23967/sahc.2021.074

Petrović M, Ilić ID, Džombić NM, Šekularac ND. Design of Protective Structures for Active Archeological Sites. in 12th International Conference on Structural Analysis of Historical Constructions (SAHC). 2021;.
doi:10.23967/sahc.2021.074 .

Petrović, Milica, Ilić, Isidora D., Džombić, Neda M., Šekularac, Nenad D., "Design of Protective Structures for Active Archeological Sites" in 12th International Conference on Structural Analysis of Historical Constructions (SAHC) (2021),
https://doi.org/10.23967/sahc.2021.074 . .

TY  - CONF
AU  - Petrović, Milica D.
AU  - Ilić, Isidora D.
PY  - 2021
UR  - https://raf.arh.bg.ac.rs/handle/123456789/1781
AB  - Structure: the manner in which the parts of the whole are arranged. [1] The question of structure in architecture in the 21st century has been widely addressed. This paper aims to show the uniqueness of architectural expression that structural patterns have in contemporary architecture. The results of this paper will be shown through the discussion on the usage of pattern as a repetitive module for structure design. If we define pattern as human-made medium which has the ability to translate concepts of nature into those that are applicable in architecture due to their simplicity, then site-specific patterns are a methodological medium for achieving structural design that has strong cultural expression. Lattice structures present a moment in which structure becomes architecture. Their underlying geometry can be designed in a site-specific pattern in order to achieve unique structure for a specific context.
PB  - International Association for Shell and Spatial Structures (IASS)
C3  - Proceedings of the IASS Annual Symposium 2020/21 and the 7th International Conference on Spatial Structures Inspiring the Next Generation  23 – 27 August 2021, Guilford
T1  - Structural Patterns in Architecture
UR  - https://hdl.handle.net/21.15107/rcub_raf_1781
ER  - 

@conference{
author = "Petrović, Milica D. and Ilić, Isidora D.",
year = "2021",
abstract = "Structure: the manner in which the parts of the whole are arranged. [1] The question of structure in architecture in the 21st century has been widely addressed. This paper aims to show the uniqueness of architectural expression that structural patterns have in contemporary architecture. The results of this paper will be shown through the discussion on the usage of pattern as a repetitive module for structure design. If we define pattern as human-made medium which has the ability to translate concepts of nature into those that are applicable in architecture due to their simplicity, then site-specific patterns are a methodological medium for achieving structural design that has strong cultural expression. Lattice structures present a moment in which structure becomes architecture. Their underlying geometry can be designed in a site-specific pattern in order to achieve unique structure for a specific context.",
publisher = "International Association for Shell and Spatial Structures (IASS)",
journal = "Proceedings of the IASS Annual Symposium 2020/21 and the 7th International Conference on Spatial Structures Inspiring the Next Generation  23 – 27 August 2021, Guilford",
title = "Structural Patterns in Architecture",
url = "https://hdl.handle.net/21.15107/rcub_raf_1781"
}

Petrović, M. D.,& Ilić, I. D.. (2021). Structural Patterns in Architecture. in Proceedings of the IASS Annual Symposium 2020/21 and the 7th International Conference on Spatial Structures Inspiring the Next Generation  23 – 27 August 2021, Guilford
International Association for Shell and Spatial Structures (IASS)..
https://hdl.handle.net/21.15107/rcub_raf_1781

Petrović MD, Ilić ID. Structural Patterns in Architecture. in Proceedings of the IASS Annual Symposium 2020/21 and the 7th International Conference on Spatial Structures Inspiring the Next Generation  23 – 27 August 2021, Guilford. 2021;.
https://hdl.handle.net/21.15107/rcub_raf_1781 .

Petrović, Milica D., Ilić, Isidora D., "Structural Patterns in Architecture" in Proceedings of the IASS Annual Symposium 2020/21 and the 7th International Conference on Spatial Structures Inspiring the Next Generation  23 – 27 August 2021, Guilford (2021),
https://hdl.handle.net/21.15107/rcub_raf_1781 .