The purpose of the PRODEC scenario-based design method is the incremental cross-fertilization and refinement of procedural scenarios and declarative configurations. It uses virtual prototypes of the developed systems ...
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The purpose of the PRODEC scenario-based design method is the incremental cross-fertilization and refinement of procedural scenarios and declarative configurations. It uses virtual prototypes of the developed systems (mainly life-critical systems) to conduct human-in-the-loop simulations (HITLSs). Based on human systems integration (HSI) principles and criteria, as well as expertise and experience in the domain at stake, this HSI approach grounded in virtual environments requires a clear definition of physical and cognitive tangibility metrics to assess the distance between virtual and tangible (grasp) dimensions of the system being developed when it is put to work. PRODEC considers human and machine systems described in terms of structures and functions incrementally designed using procedural scenarios (i.e., stories) in task and activity networks, which provide life to declarative configurations (i.e., system's functions and structures). This active modeling and simulation process enables the discovery of emergent structures and functions of the system being developed when it is virtually operated. PRODEC's use is illustrated in an example. We discuss the use of PRODEC and its results as to how they can be used with digital twins.
The increasing aging population highlights the critical need for elderly-friendly architectural environments. Existing architecture design guidelines often overlook the varied needs of individual differences among the...
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The increasing aging population highlights the critical need for elderly-friendly architectural environments. Existing architecture design guidelines often overlook the varied needs of individual differences among the elderly. digitalhuman Models (DHMs) offer an effective solution by simulating individual differences and interactions within architectural spaces for the elderly, enabling ergonomic assessments during the design phase of architecture. However, existing DHM platforms have not been integrated with architectural software, limiting designers' ability to receive timely feedback during the design phase. This study addresses this gap by developing a novel DHM toolset on architectural software, Grasshopper, that simulates elderly postures and automatically assesses ergonomic factors like joint angles and comfort levels. Three application scenarios for the toolset were provided: assessing the minimum doorway side space for walker users, determining the handrail position for wheelchair users during the transfer process in the bathroom, and evaluating the comfort level of elderly people getting support postures in the bedroom. The results demonstrate that the toolset can effectively simulate the daily activity postures of the elderly and offer practical design suggestions. The theoretical contribution of this study lies in providing a novel toolset that integrates DHM with architectural design software, offering a new perspective and method for architectural design that considers individual differences among the elderly. Practically, by assessing minimal space and posture comfort, the toolset enables designers to obtain timely ergonomic feedback during the architecture design phase. This ultimately improves architectural design schemes and fosters independence and safety for the elderly in built environments.
The operation of ground support vehicles in busy airport taxiways and runways is a growing concern, especially when the driver does not have an adequate field of view (FoV). Airport ground vehicle accidents due to vis...
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ISBN:
(纸本)9783031610592;9783031610608
The operation of ground support vehicles in busy airport taxiways and runways is a growing concern, especially when the driver does not have an adequate field of view (FoV). Airport ground vehicle accidents due to vision obstruction have resulted in loss of revenue, injuries, and fatalities. The research presented in this paper examines and quantifies vision obstruction in airport ground support vehicles using an early design methodology based on digitalhumanmodeling (DHM). The methodology is presented through investigating two case studies based on actual airport accidents influenced by vision obstruction, involving pushback tractors and an aircraft refueling truck. Each study comprises three-dimensional (3D) computer-aided design (CAD) models of the vehicles and four DHM manikins with varying anthropometries. Obstruction-causing vehicle elements are identified, and then the CAD models are redesigned to improve the driver's forward FoV. Results from this study show that DHM can facilitate a proactive design approach by pinpointing potential hazards in the design of ground vehicles by retrofitting changes during early-phase design via digital models to reduce the risk of driver vision obstruction.
Ergonomic design principles have been attempted to be included into product development and work system design over the times. The advancements in ergonomic evaluation have made it possible to integrate ergonomics int...
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The High-Temperature Biaxial Testing Apparatus(HTBTA)is a critical tool for studying the damage and failure mechanisms of heat-resistant composite materials under extreme ***,existing methods for managing and monitori...
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The High-Temperature Biaxial Testing Apparatus(HTBTA)is a critical tool for studying the damage and failure mechanisms of heat-resistant composite materials under extreme ***,existing methods for managing and monitoring such apparatus face challenges,including limited real-time modeling capabilities,inadequate integration of multi-source data,and inefficiencies in human-machine *** address these gaps,this study proposes a novel digital twin-driven framework for HTBTA,encompassing the design,validation,operation,and maintenance *** integrating advanced modeling techniques,such as finite element analysis and Long Short-Term Memory(LSTM)networks,the digital twin enables high-fidelity simulation,real-time predictive modeling,and robust remote monitoring of *** research contributes to bridging the knowledge gap in applying digital twin technology to high-temperature multi-axial testing *** existing solutions,the proposed approach achieves synchronization error,real-time monitoring with ms delay,and predictive accuracy for temperature<2%<100distributions under extreme conditions up to 2500℃.The findings highlight the effectiveness of the digital twin in improving system reliability,enhancing interaction efficiency,and reducing maintenance *** study not only advances the application of digital twin technology in high-temperature material testing but also establishes a foundation for broader adoption in aerospace,automotive,and other industrial *** research directions include exploring non-proportional loading scenarios,expanding multi-environment simulations,and integrating in-situ observation techniques.
Nanotechnology has been integrated into architectural design, and the construction industry is experiencing new solutions that give better structural integrity, aesthetic value, and sustainability for buildings. This ...
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Nanotechnology has been integrated into architectural design, and the construction industry is experiencing new solutions that give better structural integrity, aesthetic value, and sustainability for buildings. This paper presents the stability behavior of an artistic design of engineering architectural structure consisting of a honeycomb nanocomposite annular plates reinforced by graphene platelets. A high-order deformation theory is used here for mathematical modeling of artistic design of engineering architectural structure, which can describe the behaviors of these annular plates. Then, a numerical procedure would be introduced to analysis of buckling characteristics of structure. Architectural structures with precisely constituted nanomaterials-carbon nanotubes and graphene derive strength and resilience unprecedented in their ability to withstand environmental stresses and human impacts. The results represent a valuable contribution to the continuing effort of improving our understanding of buckling phenomena in engineering architectural structure and provide a fundamental basis for designing their mechanical behavior, with the aim of enhancement in both geometry and material composition. It is the belief of the paper that in pointing out or highlighting the symbiotic relationship that exists between technology and artistry, it will be in a position to segue the community of architects to be more innovative, experiment with new ideas in the architectural design dimension.
Multi-objective optimization digitalhuman models permit users to predict postures that follow performance criteria, such as minimizing torques. Currently, it is unknown how to weight different objective functions to ...
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Multi-objective optimization digitalhuman models permit users to predict postures that follow performance criteria, such as minimizing torques. Currently, it is unknown how to weight different objective functions to best predict postures. Objective one was to describe a response surface method to determine optimal objective function weightings to predict lift postures. Objective two was to evaluate the sensitivity of different error calculation methods. Our response surface approach has utility for determining optimal objective function weightings when using a digitalhuman model to evaluate human-system interactions in early design stages. The approach was not dependent on variations in error calculation methods.
To tackle the climate warming crisis together, reducing carbon emissions and achieving sustainable human development have become a global consensus. This paper focuses on evaluating zero-carbon retrofit schemes for ex...
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To tackle the climate warming crisis together, reducing carbon emissions and achieving sustainable human development have become a global consensus. This paper focuses on evaluating zero-carbon retrofit schemes for existing buildings and proposes a digital twin evaluation framework that combines point cloud models and building information modeling. Based on the point cloud data, a 3D visualization model of the existing building is established as a virtual one, and different retrofit schemes are simulated. Then, comprehensively analyze the building energy consumption, building carbon emissions, predicted mean vote (PMV), and predicted percentage dissatisfied (PDD) of the retrofit schemes to find the optimal solution for zero carbon emissions of existing buildings. According to the results of the study, the zero-carbon building retrofit scheme suitable for the case study can reduce building energy use by 13.95 %, increase solar photovoltaic power generation by 27.80 %, and reduce carbon emissions by 18106.32 kgCO2/a.
To understand the current application and development of 3D modeling in digital Twins(DTs),abundant literatures on DTs and 3D modeling are investigated by means of literature *** transition process from 3D modeling to...
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To understand the current application and development of 3D modeling in digital Twins(DTs),abundant literatures on DTs and 3D modeling are investigated by means of literature *** transition process from 3D modeling to DTs modeling is analyzed,as well as the current application of DTs modeling in various *** application of 3D DTs modeling in theelds of smartmanufacturing,smart ecology,smart transportation,and smart buildings in smart cities is analyzed in detail,and the current limitations are *** is found that the 3D modeling technology in DTs has broad prospects for development and has a huge impact on all walks of life and even human *** the same time,the development of DTs modeling relies on the development and support capabilities of mature technologies such as Big Data,Internet of Things,Cloud Computing,Articial Intelligence,and game ***,although some results have been achieved,there are still *** work aims to provide a good theoretical support for the further development of 3D DTs modeling.
Cyber-Physical Systems (CPS) are increasingly becoming part of organizations' digitalization efforts in many different domains. CPS are characterized by their heterogeneity and complexity, thus requiring the invol...
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ISBN:
(纸本)9798350395129;9798350395112
Cyber-Physical Systems (CPS) are increasingly becoming part of organizations' digitalization efforts in many different domains. CPS are characterized by their heterogeneity and complexity, thus requiring the involvement of various experts throughout development. digital Twins (DTs) were found to facilitate the acquisition of such technical knowledge required for effective designs. In particular, we pose that process-oriented model representations can help to account for various concerns (e.g.: privacy and security) across CPS components in a human-centered way, thereby enabling the active participation of relevant actors in requirements elicitation and design exploration. Our human-centered approach uses digital Process Twins (DPTs) for eliciting and refining requirements for CPS design, and for supporting agile CPS development. Our ongoing project follows the design science method. We demonstrate results of the first design cycle and provide an example illustrating the modeling part of our methodology.
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