Automation of a Thin-Layer Load-Bearing Structure Design on the Example of High Altitude Long Endurance Unmanned Aerial Vehicle (HALE UAV)

Skarka, Wojciech; Jałowiecki, Andrzej

doi:10.3390/app11062645

Cited by 10 publications

(7 citation statements)

References 18 publications

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“…CAx can automatically generate virtual models or draw documentation of the designed technical object at the end of the process using integrated knowledge of the designed design feature, element, or set of elements and predefined input information, no matter if it is geometric or parametric. This is accomplished using the existing automation techniques in the CAx environment [14].…”

Section: Methodsmentioning

confidence: 99%

“…In the classic design process using the CAD system, the designer creates a model of the object based on his/her own knowledge or knowledge derived from external sources such as standards, catalogues, etc. In the case of creating a generative model, the role of the designer is completely different [14]. In this case, the designer, together with the knowledge engineer, tries to identify the appropriate geometric features of the object and develops a set of parameters and rules that describe the given features [13,14].…”

Section: Methodsmentioning

confidence: 99%

“…In the case of creating a generative model, the role of the designer is completely different [14]. In this case, the designer, together with the knowledge engineer, tries to identify the appropriate geometric features of the object and develops a set of parameters and rules that describe the given features [13,14]. The result of these activities is a CAD model that allows the automatic generation of specific design features based on the assumed input data.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Integrated Aircraft Design System Based on Generative Modelling

Skarka,

Nalepa,

Musik

2023

Aerospace

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This article presents the effects of work performed during a software project for generative models and spreadsheets, allowing the quick creation of conceptual models for aircraft. The presented software at the current stage is suitable for the creation of glider representation; however, a modular structure allows for developing and extrapolating the presented application to match the requirements of planes and UAV (unmanned aerial vehicle) design. The subject of this work is a response to the current trends and needs prevailing in the field of CAD (computer-aided design) and aviation. In the initial sections of this paper, theoretical issues related to the work being carried out are introduced, and the methodology for creating software for the construction and verification of the aircraft structure along with the need for interchange between databases of generative models is presented. In the following sections, the concepts and selected solutions for the user interface that supports the knowledge base are presented along with a set of procedures for its operation. Furthermore, a method for database integration with the methods used to determine design features for the developed generative models and the Siemens NX system is introduced. Problems encountered during software development, as well as solution examples for model applications, are specified. The results obtained and the models generated on their basis were tested with a strength analysis using Autodesk Inventor software and analysed in terms of meeting the initial assumptions. In the end, conclusions and observations were formulated resulting from the effects of the work performed during the project.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Integrated Aircraft Design System Based on Generative Modelling

Skarka,

Nalepa,

Musik

2023

Aerospace

Self Cite

View full text Add to dashboard Cite

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“…When a UAV is exposed to aerodynamic loads, it is very important that the structure can withstand the load without deformation, deflection, and torsion. 1,2 It is also very important to design a structure with a certain degree of safety to some unforeseen impact loads. 3 In its early stages, the design of structural elements is mostly based on suitable engineering simulations.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling and experimental investigation of a composite beam failure - Case study

Milic,

Svorcan,

Zoric

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Composite materials have been extensively employed in the aviation industry in recent years. The application of new materials enables significant weight savings with improved mechanical characteristics. This is also very important in the field of development of unmanned aerial vehicles (UAV). In the design phases, it is necessary to perceive all the aspects that are important for the structure and consider different load cases. The relationship between weight and strength proved to be important. This means that detailed strength analyses of each structural part are indispensable. In particular, primary load-bearing structures must sustain all types of loads without fail. Failure of the structure can affect the motion of the UAV during the mission or lead to a crash and significant losses. This paper presents the research performed on the failure analysis of a composite beam of a novel UAV. During the testing phase, under an unpredictable load condition followed by a crash landing, failure of the structure occurred on a beam element. The study was performed to determine the cause of the failure of certain layers of the composite laminate, because the previous calculation showed that it met the criteria for which it was dimensioned. Based on the telemetry data and the impact load that was registered, a complementary numerical and experimental analyses were performed to determine what happened and why. Composite test specimens were extracted from the beam and subjected to standard tensile tests, in order to determine the actual mechanical characteristics of the layered material. The paper presents in detail the comparison of the results as well as the methodology used in this research.

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“…The design methodologies used in this case were tested by consortium members in aviation [2,3] as well as automotive [4] and robotic [5] applications. Design methods for thin-walled structures, on the other hand, were implemented through the use of generative design [6]. The structural optimization of the structure is a particular challenge.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization of Composite Structure Using Rule-Based Parametrization

Sobota

Skarka

2022

Advances in Transdisciplinary Engineering

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Ultra-light unmanned aerial vehicles (UAV) benefit from use of composite materials due to weight savings and ease of manufacturing for piece production. However, complex shape and internal structure of wings limits the use of hand calculations that can be employed to optimize the structure. Therefore, design process can greatly benefit from the FEM (Finite Element Method) calculations coupled with CFD (Computational Fluid Dynamics), composite mechanics and composite failure theories. This multi-physics approach allows to accurately describe behavior of a wing during flight. Due to nonlinear response of a system after changes in wing design and flight characteristics, we present a method of optimization using artificial neural networks. This allows to accurately describe influence of given parameters on the stress and strain distribution as well as reduce number of design points. Material data has been gathered from experimental tests of simple specimens. Based on this data more complex elements were designed using FEM and tested experimentally in order to validate numerical calculations in a transdisciplinary rapid prototyping exercise. Advanced failure criteria not only predicted failure but also failure mechanism, thus catastrophic failure can be prevented. In the future this multi-physics approach can incorporate numerical analysis of manufacturing and curing process therefore reducing need for experimental validations. Further development of neural networks will lead to them being directly implemented into FEM codes.

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Automation of a Thin-Layer Load-Bearing Structure Design on the Example of High Altitude Long Endurance Unmanned Aerial Vehicle (HALE UAV)

Cited by 10 publications

References 18 publications

Integrated Aircraft Design System Based on Generative Modelling

Integrated Aircraft Design System Based on Generative Modelling

Mathematical modeling and experimental investigation of a composite beam failure - Case study

Multi-Objective Optimization of Composite Structure Using Rule-Based Parametrization

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