Aircraft Composite Spoiler Fitting Design Using the Variable Density Model

Комаров, В. А.; Kishov, E. A.; Kurkin, E. I.; Charkviani, Ramaz V.

doi:10.1016/j.procs.2015.09.085

Cited by 9 publications

(5 citation statements)

References 1 publication

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“…4b). To export the results of the experiment of the servo-hydraulic MTS machine tool MTS_to_MATLAB [19] for data import is designed. The tool is designed to prepare data obtained from the universal testing servohydraulic machine MTS793 for their further automated processing.…”

Section: Technology Of Spicemens Productionmentioning

confidence: 99%

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Processing the Results of Measuring the Mechanical Characteristics of Plated Specimens

Kurkin

Spirina

2020

KEM

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Paper is devoted to the automation of processing the results of measurements of mechanical characteristics of plated specimens and the creation of a mathematical model of anisotropy material. Methods of conducting tensile and flexural tests are described. Developed in MATLAB tools for automation of processing results of experiments are proposed. Tools can be used for interpretation of the results of strength tests of isotropic and composite materials. The advantage of the developed tools is batch processing, which allows processing the results of a large series of experiments. The tools system was tested when creating a model of short-reinforced composite material. An example of the use of test results when constructing the Digimat material model and using this model to predict the stress-strain state of anisotropic structures is presented.

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Section: Technology Of Spicemens Productionmentioning

confidence: 99%

“…For the analysis of the experimental data with a testing machine at test materials by three-point bending ASTM D2344 standards [21] and ASTM D790 [22] Bending_Plot [23] and [24] tools are designed.…”

Section: Bending Testsmentioning

confidence: 99%

Processing the Results of Measuring the Mechanical Characteristics of Plated Specimens

Kurkin

Spirina

2020

KEM

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“…The principal metrics for comparing materials, rather than Young's modulus or the ultimate tensile strength, are the specific stiffness and strength, as both mechanical characteristics are normalized by material density. Current strategies for designing efficient structures can be categorized into guidelines and recommendations [33], methods and methodologies [34][35][36], and even parametric [37][38][39] and topology optimizations [38,[40][41][42][43][44][45]. Topology optimization (TO) has proven to be an excellent mathematical method for designing efficient structures and optimizing material arrangement within a given design space for a set of loads, boundary conditions, and constraints with the goal of minimizing a specific objective function.…”

Section: Introductionmentioning

confidence: 99%

Topology Optimization and Efficiency Evaluation of Short-Fiber-Reinforced Composite Structures Considering Anisotropy

Kurkin,

Espinosa Barcenas,

Kishov

et al. 2024

Computation

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The current study aims to develop a methodology for obtaining topology-optimal structures made of short fiber-reinforced polymers. Each iteration of topology optimization involves two consecutive steps: the first is a simulation of the injection molding process for obtaining the fiber orientation tensor, and the second is a structural analysis with anisotropic material properties. Accounting for the molding process during the internal iterations of topology optimization makes it possible to enhance the weight efficiency of structures—a crucial aspect, especially in aerospace. Anisotropy is considered through the fiber orientation tensor, which is modeled by solving the plastic molding equations for non-Newtonian fluids and then introduced as a variable in the stiffness matrix during the structural analysis. Structural analysis using a linear anisotropic material model was employed within the topology optimization. For verification, a non-linear elasto-plastic material model was used based on an exponential-and-linear hardening law. The evaluation of weight efficiency in structures composed of short-reinforced composite materials using a dimensionless criterion is addressed. Experimental verification was performed to confirm the validity of the developed methodology. The evidence illustrates that considering anisotropy leads to stiffer structures, and structural elements should be oriented in the direction of maximal stiffness. The load-carrying factor is expressed in terms of failure criteria. The presented multidisciplinary methodology can be used to improve the quality of the design of structures made of short fiber-reinforced composites (SFRC), where high stiffness, high strength, and minimum mass are the primary required structural characteristics.

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“…Zhongyi et al conducted a study on the points that should be considered in aircraft composite component design [7]. Komarov et al carried out research on the application of composite designs for aircraft spoilers using the variable density model [8]. Marin et al carried out a study on stress flow evaluation in aircraft composite wings by assessing the strength of material models [9].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Curved Composite Bracket

Park

2024

Applied Sciences

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The structural design of a composite bracket applied to an aircraft propulsion system was carried out in this study. Aircraft engine intakes are fitted with various components in order for the engine to operate. The thickness of the composite laminate was determined through classical laminate theory. The mechanical properties of the manufactured specimen were analyzed and reflected in the conceptual design. The material for the design and analysis was a composite material consisting of carbon fiber and epoxy resin. The results of the designed composite structures were compared with those of aluminum alloy structures, and the structural integrity was investigated via the structural analysis of the designed bracket. The commercial FEM code Nastran 2022 and ANSYS 2023 software were used for numerical analysis. A stress and deformation analysis was carried out, and the buckling stability was also evaluated due to the characteristics of the composite structure. The bracket was shown to be sufficiently safe through structural analysis.

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Aircraft Composite Spoiler Fitting Design Using the Variable Density Model

Cited by 9 publications

References 1 publication

Processing the Results of Measuring the Mechanical Characteristics of Plated Specimens

Processing the Results of Measuring the Mechanical Characteristics of Plated Specimens

Topology Optimization and Efficiency Evaluation of Short-Fiber-Reinforced Composite Structures Considering Anisotropy

Design and Analysis of a Curved Composite Bracket

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