Relevant bibliographies by topics / Geometrical deviation model

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Geometrical deviation model'

Author: Grafiati
Published: 4 May 2024
Last updated: 31 July 2025

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Journal articles on the topic "Geometrical deviation model"

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Tabar, Roham Sadeghi, Kristina Wärmefjord, and Rikard Söderberg. "A new surrogate model–based method for individualized spot welding sequence optimization with respect to geometrical quality." International Journal of Advanced Manufacturing Technology 106, no. 5-6 (2019): 2333–46. http://dx.doi.org/10.1007/s00170-019-04706-x.

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AbstractIn an individualized shee metal assembly line, form and dimensional variation of the in-going parts and different disturbances from the assembly process result in the final geometrical deviations. Securing the final geometrical requirements in the sheet metal assemblies is of importance for achieving aesthetic and functional quality. Spot welding sequence is one of the influential contributors to the final geometrical deviation. Evaluating spot welding sequences to retrieve lower geometrical deviations is computationally expensive. In a geometry assurance digital twin, where assembly p
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Huang, Zhicheng, Jean-Yves Dantan, Alain Etienne, Mickaël Rivette, and Nicolas Bonnet. "Geometrical deviation identification and prediction method for additive manufacturing." Rapid Prototyping Journal 24, no. 9 (2018): 1524–38. http://dx.doi.org/10.1108/rpj-07-2017-0137.

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Purpose One major problem preventing further application and benefits from additive manufacturing (AM) nowadays is that AM build parts always end up with poor geometrical quality. To help improving geometrical quality for AM, this study aims to propose geometrical deviation identification and prediction method for AM, which could be used for identifying the factors, forms and values of geometrical deviation of AM parts. Design/methodology/approach This paper applied the skin model-based modal decomposition approach to describe the geometrical deviations of AM and decompose them into different
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Nguyen, Dinh Son, Frederic Vignat, and Daniel Brissaud. "Geometrical Deviation Model of product throughout its life cycle." International Journal of Manufacturing Research 6, no. 3 (2011): 236. http://dx.doi.org/10.1504/ijmr.2011.041128.

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Polini, Wilma, and Andrea Corrado. "A Unique Model to Estimate Geometric Deviations in Drilling and Milling Due to Two Uncertainty Sources." Applied Sciences 11, no. 5 (2021): 1996. http://dx.doi.org/10.3390/app11051996.

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Industry 4.0 involves the use of information and communication technologies to transform industry by intelligent networking machines and processes. The availability of big data sets from manufacturing and inspection allow for developing new and more accurate simulation models. This involves the development of new machining simulation models to consider the geometrical deviations of the workpiece due to the machine tool, the part datum surfaces and the fixturing equipment. This work presents a model that kinematically correlates the locator uncertainty, the form deviation on the part datum surf
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Sánchez-Sola, José Miguel, Moisés Batista, Jorge Salguero, Alvaro Gómez, and Mariano Marcos Bárcena. "Cutting Speed-Feed Based Parametric Model for Macro-Geometrical Deviations in the Dry Turning of UNS A92024 Al-Cu Alloys." Key Engineering Materials 504-506 (February 2012): 1311–16. http://dx.doi.org/10.4028/www.scientific.net/kem.504-506.1311.

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This work reports on the results of a study of different macro-geometrical deviation parameters, such as Straightness (SD), Parallelism (PD) and Circularity (CD) as a function of cutting speed (v) and feed (f) of dry turned UNS A92024 (Al-Cu) cylindrical bars. The results obtained have allowed establishing exponentials parametric model for predicting these deviations as a function of those cutting parameters. As a consequence of that, geometrical surfaces SD(f,v), PD(f,v) and CD(f,v) have been developed for this alloy. These surfaces allows determining marginal curves for specific v and f valu
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Dash, Satabdee, and Axel Nordin. "TOWARDS REALISTIC NUMERICAL MODELLING OF THIN STRUT-BASED 3D-PRINTED STRUCTURES." Proceedings of the Design Society 3 (June 19, 2023): 3591–600. http://dx.doi.org/10.1017/pds.2023.360.

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AbstractThe as-built geometry and material properties of parts manufactured using Additive Manufacturing (AM) can differ significantly from the as-designed model and base material properties. These differences can be more pronounced in thin strut-like features (e.g., in a lattice structure), making it essential to incorporate them when designing for AM and predicting their structural behaviour. Therefore, the aim of this study is to develop a numerical model with realistic characteristics based on a thin strut-based test artefact and to use it accurately for estimating its compressive strength
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Liu, Xueshu, Yuxing Yang, Li Huang, Ping Zhang, and Hang Gao. "Numerical Analysis of the Influences of Geometrical Deviation on Delamination in Composite Laminates around the Countersunk Hole." International Journal of Aerospace Engineering 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/5061948.

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During countersunk hole machining, defects like geometrical deviation of the chamfer angle and delamination are easily introduced into the structure. To investigate the influences of geometrical deviation on delamination propagation around the countersunk hole during assembly, a progressive damage model (PDM) combining cohesive element was proposed and validated. Numerical analyses were then carried out to study delamination propagation behavior under the influences of geometrical parameters including delamination factor, chamfer angle, and location of delamination. The results show that when
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Zhao, Binbin, Yunlong Wang, Qingchao Sun, Yuanliang Zhang, Xiao Liang, and Xuewei Liu. "Monomer model: an integrated characterization method of geometrical deviations for assembly accuracy analysis." Assembly Automation 41, no. 4 (2021): 514–23. http://dx.doi.org/10.1108/aa-11-2020-0165.

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Purpose Assembly accuracy is the guarantee of mechanical product performance, and the characterization of the part with geometrical deviations is the basis of assembly accuracy analysis. Design/methodology/approach The existed small displacement torsors (SDT) model cannot fully describe the part with multiple mating surfaces, which increases the difficulty of accuracy analysis. This paper proposed an integrated characterization method for accuracy analysis. By analyzing the internal coupling relationship of the different geometrical deviations in a single part, the Monomer Model was establishe
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Kwintarini, Widyanti, Agung Wibowo, and Yatna Yuwana Martawirya. "Mathematical Approach for Geometric Error Modeling of Three Axis CNC Vertical Milling Machine." Applied Mechanics and Materials 842 (June 2016): 303–10. http://dx.doi.org/10.4028/www.scientific.net/amm.842.303.

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The aim of this paper overviews about to find out the errors that come from three axis CNC vertical milling machine. The errors come from, the CNC milling machine can be modelled into mathematical models and later on these error models will be used to analyse the errors in the measured data. Many errors from CNC machine tools have given significant effects toward the accuracy and repeatability of manufacturing process. There are two error sources come from CNC machine tools such as tool deflection and thermal distortions of machine tool structure. These errors later on will contribute to resul
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Xu, Bin, So Ito, Yuki Shimizu, and Wei Gao. "Eccentric Error Compensation for Pitch Deviation Measurement of Gears." Key Engineering Materials 523-524 (November 2012): 853–58. http://dx.doi.org/10.4028/www.scientific.net/kem.523-524.853.

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An eccentric error compensation method is presented for the pitch deviation measurement of gears. The eccentric error compensation method mainly consists of the evaluation of the assembly accuracy, the reconstruction of the reference curve and the coordinate compensation of intersection points. The geometrical model of the measurement system was analyzed and the corresponding mathematical model was proposed. A gear with small modulus was adopted as the specimen for the pitch deviation measurement. Experimental results reveal that the values of eccentricity can be extracted from the measured pr
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Dissertations / Theses on the topic "Geometrical deviation model"

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Nguyen, Dinh Son. "The impact of geometrical deviations on product life cycle." Grenoble INPG, 2010. https://theses.hal.science/tel-00561475.

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Aujourd’hui, les exigences des clients concernant le produit qu’ils achètent, exigence telles que la qualité, la fiabilité, la robustesse, l’innovation et le coût sont de plus en plus élevées. Le concepteur du produit doit s’assurer que le produit conçu satisfait aux exigences des clients et des utilisateurs. En d’autres mots, la satisfaction de ceux-ci joue un rôle important dans la conception du produit et du process. Le travail de recherche présenté dans ce mémoire de thèse est une réponse complète pour la gestion des variations géométriques durant le cycle de vie du produit. Le modèle de d
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Zhu, Zuowei. "Modèles géométriques avec defauts pour la fabrication additive." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLN021/document.

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Les différentes étapes et processus de la fabrication additive (FA) induisent des erreurs de sources multiples et complexes qui soulèvent des problèmes majeurs au niveau de la qualité géométrique du produit fabriqué. Par conséquent, une modélisation effective des écarts géométriques est essentielle pour la FA. Le paradigme Skin Model Shapes (SMS) offre un cadre intégral pour la modélisation des écarts géométriques des produits manufacturés et constitue ainsi une solution efficace pour la modélisation des écarts géométriques en FA.Dans cette thèse, compte tenu de la spécificité de fabrication p
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Book chapters on the topic "Geometrical deviation model"

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Paquet, Elodie, Sébastien Le Loch, Benoit Furet, Alain Bernard, and Sébastien Garnier. "Numerical Simulation and Experimentation of Additive Manufacturing Processes with Polyurethane Foams." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70566-4_9.

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AbstractFoam Additive Manufacturing (FAM) is the additive manufacturing process allowing parts to be obtained by depositing layers of polyurethane foam using a high-pressure machine. This inexpensive technology allows large parts to be produced in a reduced time. However, the quality of the parts produced by the FAM technique is greatly affected by the various thermal phenomena present during manufacturing and by the geometrical deviations of the layers due to the expansion of the PU foam. Numerical simulation remains an effective analytical tool for studying these phenomena. The aim of this w
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Tofallis, Chris. "Model Fitting for Multiple Variables by Minimising the Geometric Mean Deviation." In Total Least Squares and Errors-in-Variables Modeling. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-3552-0_23.

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Sardina, Jeffrey, Callie Sardina, John D. Kelleher, and Declan O’Sullivan. "Analysis of Attention Mechanisms in Box-Embedding Systems." In Communications in Computer and Information Science. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-26438-2_6.

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AbstractLarge-scale Knowledge Graphs (KGs) have recently gained considerable research attention for their ability to model the inter- and intra- relationships of data. However, the huge scale of KGs has necessitated the use of querying methods to facilitate human use. Question Answering (QA) systems have shown much promise in breaking down this human-machine barrier. A recent QA model that achieved state-of-the-art performance, Query2box, modelled queries on a KG using box embeddings with an attention mechanism backend to compute the intersections of boxes for query resolution. In this paper,
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Grošelj, Petra, and Gregor Dolinar. "A Geometric Standard Deviation Based Soft Consensus Model in Analytic Hierarchy Process." In Contributions to Management Science. Springer International Publishing, 2012. http://dx.doi.org/10.1007/978-3-030-52406-7_11.

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Rosso, Stefano, Andrea Curtarello, Federico Basana, et al. "Modeling Symmetric Minimal Surfaces by Mesh Subdivision." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70566-4_40.

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AbstractThanks to the great diffusion of additive manufacturing technologies, the interest in lattice structures is growing. Among them, minimal surfaces are characterized by zero mean curvature, allowing enhanced properties such as mechanical response and fluidynamic behavior. Recent works showed a method for geometric modeling triply periodic minimal surfaces (TPMS) based on subdivision surface. In this paper, the deviation between the subdivided TPMS and the implicit defined ones is investigated together with mechanical properties computed by numerical methods. As a result, a model of mecha
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Peterson, Eric, and Bhavleen Kaur. "Printing Compound-Curved Sandwich Structures with Robotic Multi-Bias Additive Manufacturing." In Computational Design and Robotic Fabrication. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8405-3_44.

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AbstractA research team at Florida International University Robotics and Digital Fabrication Lab has developed a novel method for 3d-printing curved open grid core sandwich structures using a thermoplastic extruder mounted on a robotic arm. This print-on-print additive manufacturing (AM) method relies on the 3d modeling software Rhinoceros and its parametric software plugin Grasshopper with Kuka-Parametric Robotic Control (Kuka-PRC) to convert NURBS surfaces into multi-bias additive manufacturing (MBAM) toolpaths. While several high-profile projects including the University of Stuttgart ICD/IT
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Périé D., Hobatho M.C., De Gauzy J.sales, Sévely A., Montéan A., and Peuchot B. "3D Geometrical Analysis of the CTM Brace Effect on Scoliotic Patient." In Studies in Health Technology and Informatics. IOS Press, 1999. https://doi.org/10.3233/978-1-60750-903-5-158.

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The effect of the braces or instrumentation was studied using stereoradiography or axial tomography. The CTM brace was only studied clinically using frontal radiography. This study addresses a 3D analysis of the immediate effect of initial CTM brace wearing on the scoliotic spine using an MRI method developed previously. The MRI examination had been performed on eight scoliotic children wearing a first CTM brace. The MRI protocol was performed first with the brace and then without the brace. Using an in house processing software SIP and the pre and post processor Patran, two geometrical models
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López-Correa, Juan Manuel, Caroline König, and Alfredo Vellido. "Long Short-Term Memory to Predict 3D Amino Acids Positions in GPCR Molecular Dynamics." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2022. http://dx.doi.org/10.3233/faia220339.

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G-Protein Coupled Receptors (GPCRs) are a big family of eukaryotic cell transmembrane proteins, responsible for numerous biological processes. From a practical viewpoint around 34% of the drugs approved by the US Food and Drug Administration target these receptors. They can be analyzed from their simulated molecular dynamics, including the prediction of their behavior in the presence of drugs. In this paper, the capability of Long Short-Term Memory Networks (LSTMs) are evaluated to learn and predict the molecular dynamic trajectories of a receptor. Several models were trained with the 3D posit
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Beltrame, Fabio. "REDUCED ORDER MODELLING OF OPTIMIZED HEAT EXCHANGERS FOR MAXIMUM MASS-SPECIFIC PERFORMANCE OF AIRBORNE ORC WASTE HEAT RECOVERY UNITS." In Proceedings of the 7th International Seminar on ORC Power System (ORC 2023), 2024th ed. Editorial Universidad de Sevilla, 2024. http://dx.doi.org/10.12795/9788447227457_93.

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Waste heat recovery (WHR) from aeroengines via compact organic Rankine cycle (ORC) units may increase the fuel efficiency of air transportation. Heat exchangers are arguably the key components of ORC systems for aeronautical applications and their design must be optimized to guarantee the best trade-off between fluid pressure drop, weight and induced aircraft drag. At present, no heat exchangers design guidelines are available for waste heat recovery systems aboard aircraft. This study, thus, contributes to defining a proper design methodology for ORC systems of such applications. The chosen t
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Conference papers on the topic "Geometrical deviation model"

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Gao, Chang, Haidong Yu, and Bin Gu. "A New Deviation Propagation Model Combining Dimensional Deviation and Welding Deformation of Panel Structures With High Local Stiffness." In ASME 2023 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/imece2023-112739.

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Abstract The geometrical accuracy of panel structures jointed by friction stir welding (FSW) is affected by dimensional deviation and assembly deformation, which leads to the assembly deviation difficult to be predicted and traced. The local stiffness of panel structures enhances significantly with the increase of thickness of the structures, and the deformation concentrates in the local assembly area. In this paper, a new deviation propagation model for panel structures considering dimensional deviation and local welding deformation is proposed. The dimensional deviations with multi-tolerance
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Chatterjee, Monish R., and Shih-Tun Chen. "A Geometrical Derivation of WRITE Beam Criteria for Multiplexed Color Hologram Readout Using Wavevector Triads." In Holography. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/holography.1996.htud.3.

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The problem of restoring the misaligned output from a grating hologram under READ beam deviations has been investigated recently using a variety of resonant triad models [1-3]. Initially, it was proposed that selective angular and/or wavelength tuning of the READ beam would restore the output beam direction [1]. Subsequently, upon closer examination, it was found that the problem is amenable to different geometrical interpretations depending on whether the grating is untilted or tilted, and whether the READ beam deviation (Δλ or Δθ) is positive or negative [2]. The latter problem has generally
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Schleich, Benjamin, and Sandro Wartzack. "Motion Tolerancing Based on Skin Model Shapes by Form Deviation Parametrization and Meta-Modelling." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67227.

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The inevitable presence of geometrical part deviations and their effects on the product function and quality forces companies to manage these deviations along the product life-cycle. Computer-aided tolerancing and variation simulation tools support these activities by enabling the early prediction and assessment of the effects of such part deviations. However, available approaches for the tolerance analysis and variation simulation imply shortcomings regarding the consideration of form deviations, particularly when analysing mechanism and moving systems. This paper presents an approach for the
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Ben Amor, Sabrine, Floriane Zongo, Borhen Louhichi, Antoine Tahan, and Vladimir Brailovski. "Dimensional Deviation Prediction Model Based on Scale and Material Concentration Effects for LPBF Process." In 2022 International Additive Manufacturing Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/iam2022-93969.

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Abstract Additive Manufacturing (AM) processes generate parts layer-by-layer without using formative tools. The resulting advantages highlight the capability of AM to become an inherent part of product development. However, process-specific challenges such as high surface roughness, the stair-stepping effect, or dimensional deviations inhibit the establishment of AM at the industrial scale. Thus, AM parts often need to be post-processed using established manufacturing processes. Many process parameters and geometrical factors influence the dimensional accuracy in AM. Published results relating
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Lindstro¨m, David E. "Robustness Analysis of Airfoil Performance." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28261.

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We demonstrate a technique to evaluate the aerodynamic robustness of a given blade profile which it is exposed to stochastic geometrical variation. The technique is based on random fields, with geometrical deviations continuously defined over the entire structure, with a prescribed statistical distribution function and a given correlation between these deviations. Control points are defined on the blade surface to model the blade geometry disturbances. At each control point a stochastic deviation is defined, which acts in the normal direction of the blade. By modeling disturbances in the norma
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Weihard, Stefan, Andreas Hupfer, and Hans-Peter Kau. "Statistical Impact of Manufacturing Tolerances on Axial Gaps Between Vane Segments and the Rotor of Axial Flow Turbo-Compressors." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95532.

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Geometrical deviations arising from the manufacturing process significantly influence the axial gaps between rotating and nonrotating parts. To optimize axial gaps and thus reduce the overall length and weight of the compressor, it is essential to take the statistical nature of these deviations into account. The focus of this paper is to identify complex three-dimensional effects caused by geometrical uncertainties. The results can be then used to define an appropriate level of detail for the simulation model in order to accurately predict the probability distribution of axial gaps. In the sim
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Dong, Yiwei, Qi Zhao, Xiaolin Li, Xiaoji Li, and Jun Yang. "Methodology to Develop Geometric Modeling of Accurate Drilled Cooling Holes on Turbine Blades." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-63024.

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Film cooling is one of most developed technologies which enhance the gas turbine blades operation in today’s high-thrust-to-weight-ratio gas engines. The determination of the accurate cooling holes of turbine blades is of vital importance to improving the cooling performance. However, in all current methods for manufacturing drilled cooling holes on turbine blades, the complexity of the production processes will ineluctably cause unexpected consequences such as the deformation of the turbomachinery parts, the locating error caused by fixture layouts. These issues will cause deviations in the g
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Tachikawa, Tomokazu, Nobuaki Kurita, Morimasa Nakamura, Daisuke Iba, and Ichiro Moriwaki. "Calculation Model for Internal Gear Skiving With a Pinion-Type Cutter Having Pitch Deviation and a Run-Out." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46402.

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As the emerging economies expand, demand for low cost production of internal gears has been increasing. And skiving is in focus as a potential method than can meet this demand. Skiving was invented in 1910, since then, mechanical machine has been developed to NC machine and cutter design technologies have developed dramatically. As a result, several machine and tool manufacturer started to release their skiving machine and skiving cutter as well. Furthermore, many studies on the kinematics have been conducted both in research institutions and private companies. However, most of these studies a
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Chen, Pengyuan, Shun Liu, Sun Jin, and Qunfei Gu. "Geometric Modeling and Characterization of Wall Thickness for Complex Cylindrical Thin-Walled Parts With Uncertain Manufacturing Deviations." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-73185.

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Abstract The complex cylindrical thin-walled parts have been widely used in manufacturing field with high precision requirement of wall thickness. However, due to the existence of initial uncertain manufacturing deviations, such as blank casting errors, initial shape deviations and clamping deformations, there will be a large geometric deviation between real blank workpiece and theoretical design model. In order to solve the problem in lacking of reliable geometrical model for trajectory planning in face milling of complex cylindrical thin-walled parts, this paper proposes a method for accurat
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Hiraguchi, Hideo. "Optimum Geometrical Models for Prediction of Phase Transition of Single Crystal Nickel Based Superalloys via the Discrete Cosine Transform and the Maximum Entropy Method." In ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/gt2024-120879.

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Abstract A new prediction method using the combination of the two-dimensional Discrete Cosine Transform and the Maximum Entropy method has recently appeared to estimate the dynamic changes of metallographic structures of the single crystal Nickel-based superalloy for gas turbine blades during the high temperature creep deformation. In the analysis of this method, simple geometrical models are used to estimate the dynamic changes of the phase transition. However, it has not been understood how the difference between the multiple simple geometrical models affect the result of the prediction of d
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Reports on the topic "Geometrical deviation model"

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Abrahamson, Norman, and Zeynep Gülerce. Regionalized Ground-Motion Models for Subduction Earthquakes Based on the NGA-SUB Database. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2020. http://dx.doi.org/10.55461/ssxe9861.

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A set of global and region-specific ground-motion models (GMMs) for subduction zone earthquakes is developed based on the database compiled by the Pacific Earthquake Engineering Research Center (PEER) Next Generation Attenuation - Subduction (NGA-SUB) project. The subset of the NGA-SUB database used to develop the GMMs includes 3914 recordings from 113 subduction interface earthquakes with magnitudes varying between 5 and 9.2 and 4850 recordings from 89 intraslab events with magnitudes varying between 5 and 7.8. Recordings in the back-arc region are excluded, except for the Cascadia region. Th
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Foeken, van, and Gresnigt. L51809 Buckling and Collapse of UOE Manufactured Steel Pipes. Pipeline Research Council International, Inc. (PRCI), 1998. http://dx.doi.org/10.55274/r0010236.

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In the past 20 years, much research has been conducted into buckling and collapse of pipelines under external pressure, bending or tension and combinations. Also many finite element analyses have been performed into the behavior of pipelines under these loads. The available test results show considerable scatter, which is considered to be caused by variations in the stress-strain relationship, the anisotropy of the steel, the Bauschinger effect, the geometrical deviations, the residual stresses, the test conditions, etc. The manufacturing method (seamless, UO, UOE) has a considerable influence
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