scholarly journals A Parametric Scan-to-FEM Framework for the Digital Twin Generation of Historic Masonry Structures

2021 ◽  
Vol 13 (19) ◽  
pp. 11088
Author(s):  
Marco Francesco Funari ◽  
Ameer Emad Hajjat ◽  
Maria Giovanna Masciotta ◽  
Daniel V. Oliveira ◽  
Paulo B. Lourenço
Keyword(s):  
Point Clouds ◽  
Visual Programming ◽  
Parametric Modelling ◽  
Architectural Heritage ◽  
Inverse Dynamic ◽  
Historic Masonry ◽  
Damage Scenarios ◽  
Digital Twin ◽  
Parametric Scan ◽  
Definition Of

Historic masonry buildings are characterised by uniqueness, which is intrinsically present in their building techniques, morphological features, architectural decorations, artworks, etc. From the modelling point of view, the degree of detail reached on transforming discrete digital representations of historic buildings, e.g., point clouds, into 3D objects and elements strongly depends on the final purpose of the project. For instance, structural engineers involved in the conservation process of built heritage aim to represent the structural system rigorously, neglecting architectural decorations and other details. Following this principle, the software industry is focusing on the definition of a parametric modelling approach, which allows performing the transition from half-raw survey data (point clouds) to geometrical entities in nearly no time. In this paper, a novel parametric Scan-to-FEM approach suitable for architectural heritage is presented. The proposed strategy uses the Generative Programming paradigm implementing a modelling framework into a visual programming environment. Such an approach starts from the 3D survey of the case-study structure and culminates with the definition of a detailed finite element model that can be exploited to predict future scenarios. This approach is appropriate for architectural heritage characterised by symmetries, repetition of modules and architectural orders, making the Scan-to-FEM transition fast and efficient. A Portuguese monument is adopted as a pilot case to validate the proposed procedure. In order to obtain a proper digital twin of this structure, the generated parametric model is imported into an FE environment and then calibrated via an inverse dynamic problem, using as reference metrics the modal properties identified from field acceleration data recorded before and after a retrofitting intervention. After assessing the effectiveness of the strengthening measures, the digital twin ability of reproducing past and future damage scenarios of the church is validated through nonlinear static analyses.

scholarly journals PARAMETRIC MODELLING APPROACH TO RECONSTRUCTING ARCHITECTURAL INDOOR SPACES FROM POINT CLOUDS

2021 ◽  
Vol XLIII-B4-2021 ◽  
pp. 251-257
Author(s):  
W. Wahbeh
Keyword(s):  
Programming Languages ◽  
Point Clouds ◽  
Visual Programming ◽  
Parametric Modelling ◽  
Architectural Practice ◽  
Industry Foundation Classes ◽  
Interior Spaces ◽  
Speed Up ◽  
Indoor Spaces ◽  
Modelling Approach

Abstract. In this paper, some outcomes of a research project which aims to introduce automation to speed up modelling of architectural spaces based on point clouds are presented. The main objective of the research is to replace some manual parametric modelling steps with automatic processes to obtain editable models in BIM-ready software and not to generate non-parametric IFC (Industry Foundation Classes) models. An approach of automation using visual programming for interior wall modelling based on point clouds is presented. The pipeline and the different concepts represented in this paper are applicable using different programming languages but here the use of Rhinoceros as a modelling software and its open-source visual programming extension "Grasshopper" is intentional as it is in common use for parametric modelling and generative design in architectural practice. In this research, it is assumed that there is a predominance of three mutually orthogonal directions of the walls in the interior spaces to be analysed, which is the case of most indoor spaces.

scholarly journals TOWARDS A DIGITAL TWIN OF A STORAGE TANK USING LASER SCAN DATA

2021 ◽  
Vol XLVI-4/W4-2021 ◽  
pp. 119-124
Author(s):  
L. Truong-Hong ◽  
N. Nguyen ◽  
R. Lindenbergh ◽  
P. Fisk ◽  
T. Huynh
Keyword(s):  
Data Storage ◽  
Storage Tank ◽  
Laser Scanning ◽  
Point Clouds ◽  
Solid Model ◽  
Shell Wall ◽  
Digital Twin ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
3D Solid

Abstract. This paper proposes a methodology to automatically extract components of an oil storage tank from terrestrial laser scanning (TLS) point clouds, and subsequently to create a three-dimensional (3D) solid model of the tank for numerical simulation. The proposed method is integrated into a smart analysis layer of a digital twin platform consisting of three main layers: (1) smart analysis, (2) data storage, and (3) visualisation and user interaction. In this proposed method, primary components of the tank were automatically extracted in a consecutive order from a shell wall to roof and floor. Voxel-based RANSAC is employed to extract voxels containing point clouds of the shell wall, while a valley-peak-valley pattern based on kernel density estimation is implemented to remove outlier points within voxels representing to the shell wall and re-extract data points within voxels adjoined to the shell wall. Moreover, octree-based region growing is employed to extract a roof and floor from remaining point clouds. An experimental showed that the proposed framework successfully extracted all primary components of the tank and created a 3D solid model of the tank automatically. Resulting point clouds of the shell wall were directly used for estimating deformation and a 3D solid model was imported into finite element analysis (FEA) software to assess the tank in terms of stress-strain. The demonstration shows that TLS point clouds can play an important role in developing the digital twin of the oil storage tank.

Holistic definition of the digital twin

2021 ◽  
Vol 13 (4) ◽  
pp. 343
Author(s):  
Martin Eigner ◽  
Alexander Detzner ◽  
Philipp Heiner Schmidt ◽  
Rajeeth Tharma
Keyword(s):  
Digital Twin ◽  
Definition Of

Communication, Technology, and Digital Culture for the Conservation and Enhancement of the Architectural Heritage

2015 ◽  
pp. 446-475 ◽  
Author(s):  
Francesca Fatta
Keyword(s):  
Augmented Reality ◽  
Three Dimensional ◽  
Digital Culture ◽  
Architectural Heritage ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Communications Systems ◽  
Design Systems ◽  
Definition Of ◽  
The University

In this chapter the main issue is focused on the reconstruction of Reggio and Messina after the earthquake of 1908 has been an opportunity to address the broken and - what is much more difficult and required - the rebalancing of memory and identity of places. Between July 2013 and September 2014 two teams of researchers at the University of Reggio and the MAP CNRS Marseille have formed a partnership to test new communications systems, technology and digital culture applied to cultural and architectural heritage. The responsibilities of the MAP CNRS, directed by Prof. Livio De Luca and the field of investigation and experimentation defined by Atelier of thesis of Prof. Francesca Fatta, found an interaction system useful for the definition of design systems for a Museum of collective memory in Reggio Calabria. The digital experiments were compared with the taking of photogrammetric works recovered from the earthquake of 1908 in Reggio, three-dimensional modeling and integrated reading systems aimed at the restoration and augmented reality.

A Reality Integrated BIM for Architectural Heritage Conservation

2019 ◽  
pp. 142-176
Author(s):  
Fabrizio Ivan Apollonio ◽  
Marco Gaiani ◽  
Zheng Sun
Keyword(s):  
Laser Scanning ◽  
Low Cost ◽  
Point Clouds ◽  
Information Modeling ◽  
Free Form ◽  
Architectural Heritage ◽  
Ideal Model ◽  
Double Curvature ◽  
Building Information ◽  
Architectural Treatises

Building Information Modeling (BIM) has attracted wide interest in the field of documentation and conservation of Architectural Heritage (AH). Existing approaches focus on converting laser scanned point clouds to BIM objects, but laser scanning is usually limited to planar elements which are not the typical state of AH where free-form and double-curvature surfaces are common. We propose a method that combines low-cost automatic photogrammetric data acquisition techniques with parametric BIM objects founded on Architectural Treatises and a syntax allowing the transition from the archetype to the type. Point clouds with metric accuracy comparable to that from laser scanning allows accurate as-built model semantically integrated with the ideal model from parametric library. The deviation between as-built model and ideal model is evaluated to determine if feature extraction from point clouds is essential to improve the accuracy of as-built BIM.

BIM Application in Documenting and Recreating Lost Architectural Heritage

2019 ◽  
pp. 112-141
Author(s):  
Paola Casu ◽  
Claudia Pisu
Keyword(s):  
Nineteenth Century ◽  
Cultural Heritage ◽  
3D Models ◽  
Full Potential ◽  
Architectural Heritage ◽  
Research Focus ◽  
Digital Archiving ◽  
Food Market ◽  
Definition Of

The digital archiving process of complex historical architectural 3D models is a key point in the field of tangible cultural heritage. A lot of research focus on the definition of methodologies and tools that exploit the full potential of ICT applied to the documentation of cultural heritage. This chapter illustrates a part of a study in this line of investigation. It focuses on the use of BIM for the reconstruction of lost architectural heritage. BIM will be applied to virtual reconstruct the nineteenth-century covered food market of Cagliari that was demolished in 1957. Thanks to the properties of BIM to enter information related to each element constituting a building, every part of the model will be accompanied by information on the degree of reliability and references adopted for its creation. In this way, each family of elements could more easily and knowingly be reused for other similar projects.

Definition of a Protocol for the Knowledge, the Analysis and the Communication of the Architectural Heritage

2017 ◽  
pp. 94-131
Author(s):  
Marinella Arena
Keyword(s):  
New Media ◽  
Scientific Community ◽  
The European Union ◽  
Research Projects ◽  
Architectural Heritage ◽  
Horizon 2020 ◽  
Research And Innovation ◽  
A Value ◽  
New Frontier ◽  
Definition Of

The communication of architecture is a complex and multidisciplinary process, indispensable for enhancing a monument properly and to allow understanding and knowledge to a large number of users. The European Architectural Heritage, and the Italian one in particular, is enormous; the processes of knowledge, cataloguing and analysis are far from being complete. This fact has prompted the European Union to invest, especially in recent years, in research projects designed to increase the communication strategies and put a value on the present assets in its territory. For example, the programs of the European Commission for Research and Innovation, found in “Horizon 2020”, define the communication based on the new media as the new frontier for the enhancement of architectural heritage (Reflective Cities). The main goal is to develop a better awareness of the Architectural Heritage through increased interaction between the citizen, the monument and the scientific community.

Representing Architectural Heritage

2017 ◽  
pp. 1-30
Author(s):  
Alfonso Ippolito
Keyword(s):  
Material Culture ◽  
Cultural Heritage ◽  
Architectural Heritage ◽  
Digital Representation ◽  
Definition Of ◽  
The Impact

Architectonical artefacts are in many ways one of the most extraordinary legacies that past civilizations have left to us from a cultural, technological and functional standpoint, because of the impact that the development of the material culture and building techniques had for ancient communities. The definition of a protocol designed to achieve an understanding of the object of Cultural Heritage consents the realization of various models. These models are the bases for all the critical, selective, specialist next analyses and elaboration. This work discusses the possibilities offered by the integration of heterogeneous method, traditional and innovative, for massive surveying and digital representation technologies.

scholarly journals INVESTIGATIONS ON THE DESIGN PROCESS OF ELADIO DIESTE: 3D PARAMETRIC MODELLING OF MODERN LATIN AMERICAN ARCHITECTURAL HERITAGE

2019 ◽  
Vol XLII-2/W15 ◽  
pp. 775-782
Author(s):  
F. C. Melachos ◽  
W. Florio ◽  
F. Maietti ◽  
L. Rossato ◽  
M. Balzani
Keyword(s):  
Design Process ◽  
Latin American ◽  
Structural Design ◽  
Digital Fabrication ◽  
Shell Structures ◽  
Parametric Modelling ◽  
Architectural Heritage ◽  
Heritage Sites ◽  
Reinforced Masonry ◽  
Methodological Procedures

<p><strong>Abstract.</strong> The Uruguayan Engineer Eladio Dieste underwent a quest for thinness in the field of structural design which rendered his reinforced masonry thin-shell structures at a conspicuous position in Modern Latin American Architectural Heritage, so much so as to have Dieste’s work in Latin America and Europe included in an indicative list for UNESCO’s cultural heritage sites as of 2010. Nonetheless, the design process that led Dieste to such innovative structural typologies is yet to be fully academically explored. Thus, the objective of this paper is to examine the state-of-art regarding the intricate design process of Eladio Dieste’s gaussian vaults and shed some light on the existing gaps within this process by means of the 3D parametric modelling and digital fabrication of selected case studies. The adoption methodological procedures such as 3D parametrical modelling and digital fabrication allows for the establishment of important relationships between the design process and the resulting geometry of Eladio Dieste’s designs, as well as furthering registry of Dieste’s legacy for conservation purposes.</p>

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