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Relevant bibliographies by topics / Constant deflection contour method

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Academic literature on the topic 'Constant deflection contour method'

Author: Grafiati

Published: 18 May 2024

Last updated: 31 July 2025

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Journal articles on the topic "Constant deflection contour method"

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Banerjee, M. M., and G. A. Rogerson. "On the application of the constant deflection-contour method in nonlinear vibrations of elastic plates." Archive of Applied Mechanics (Ingenieur Archiv) 72, no. 4-5 (2002): 279–92. http://dx.doi.org/10.1007/s00419-002-0206-0.

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Wei, Zhao Cheng, Min Jie Wang, Wu Chu Tang, and Liang Wang. "Tool Deflection Error Regularization and Compensation in End Milling of Contour Surfaces." Applied Mechanics and Materials 217-219 (November 2012): 1341–45. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1341.

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This paper presents a new approach of tool deflection error regularization and compensation in end milling of contour surfaces. The material removal rate (MRR) is adopted as the dominant factor of surface dimensional error. A mathematics model of determining the MRR in generalized contour surfaces machining is proposed. Feedrate scheduling methodology is applied to regulate a constant MRR along curved tool path. The expectation with the constant MRR is that it will potentially produce a constant surface dimensional error. Thus, the compensation can be conveniently achieved by offsetting the no

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Li, Dong, Zhi-Chao Lai, Ying Wang, and Zhou-Lian Zheng. "A non-contact method for estimating the pre-tension of a rectangular membrane structure." Insight - Non-Destructive Testing and Condition Monitoring 62, no. 8 (2020): 464–70. http://dx.doi.org/10.1784/insi.2020.62.8.464.

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The stiffness of membrane structures widely used in modern buildings is provided by pre-tension, which means that any loss of pre-tension during service life may endanger structural safety and lead to engineering accidents. Therefore, the pre-tension of membrane structures needs to be estimated effectively and a corresponding estimation method is proposed in this study. Firstly, a theoretical model of a rectangular membrane structure is established using the constant deflection contour method (CDCM) to analytically derive a relationship between the pre-tension and the frequency. Then, the pre-

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Surianinov, Mykola, Yurii Krutii, Dariya Kirichenko, and Oleksii Klimenko. "TO THE CALCULATION OF RING PLATES ON A VARIABLE ELASTIC BASE." Urban development and spatial planning, no. 83 (April 14, 2023): 304–13. http://dx.doi.org/10.32347/2076-815x.2023.83.304-313.

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The article examines the bending of ring plates on a variable elastic base. There are different models of elastic base. The simplest is the Winkler model, or the spring model. For beams on a constant elastic base, this model allows obtaining an exact solution, but not for slabs. The case is even more complicated when the elastic basis is variable. There is no single approach to building a universal analytical solution. Therefore, numerical calculation methods are used in engineering practice. The analytical method of direct integration and computer modeling in PC LIRA-CAD with subsequent calcu

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Surianinov, M. H., Y. S. Krutii, А. S. Karnaukhova, and О. M. Klymenko. "ANALYTICAL METHOD FOR CALCULATING ANNULAR PLATES ON A VARIABLE ELASTIC BASE." Modern construction and architecture, no. 2 (December 28, 2022): 37–43. http://dx.doi.org/10.31650/2786-6696-2022-2-37-43.

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The paper considers the application of the method of direct integration to calculations of annular plates and slabs on a continuous variable elastic base. Ring-shaped plates with variable geometric and mechanical parameters are increasingly used. Not only the elastic base, but also the plate thickness and cylindrical stiffness can be variable parameters here. The need for an analytical method for calculating such structures raises no doubts, since it makes it possible to evaluate the accuracy of finite-element analysis. To date, there are no proposals in the literature regarding a general anal

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Surianinov, M., Y. Krutii, D. Kirichenko, and O. Klimenko. "CALCULATION OF ANNULAR PLATES ON AN ELASTIC BASE WITH A VARIABLE BEDDING FACTOR." Mechanics And Mathematical Methods 4, no. 2 (2022): 43–52. http://dx.doi.org/10.31650/2618-0650-2022-4-2-43-52.

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The application of the analytical method ‒ the method of direct integration ‒ to calculations of building structures in the form of circular plates and plates on a continuous variable elastic base is considered. It is noted that there are no proposals for a general analytical method for calculation of annular plates on a variable elastic base in the literature. And the need for such a method is obvious, since it makes it possible to estimate the accuracy of finite element analysis. A detailed description of the algorithm of the direct integration method is not given in the paper, and all the c

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Petrakov, Yury, and Yan Romanov. "Ensuring accuracy of contour milling on CNC machines." Mechanics and Advanced Technologies 7, no. 1 (2023): 51–60. http://dx.doi.org/10.20535/2521-1943.2023.7.1.276162.

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Contour milling is characterized by quasi-stationary, which leads to the occurrence of a machining error caused by elastic deflections of the machining system. Moreover, such an error cannot be eliminated by sub-adjusting the control program "for size", since it not is constant and changes along the contour in a wide range. To ensure the accuracy of contour milling, a new method of combined control is proposed, which uses a posteriori information of machine verification measurements of the machined surface and a priori information of modeling the material removal process. In case of single man

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RAJASEKARAN, S., and K. NALINAA. "STABILITY AND VIBRATION ANALYSIS OF NON-PRISMATIC THIN-WALLED COMPOSITE SPATIAL MEMBERS OF GENERIC SECTION." International Journal of Structural Stability and Dynamics 05, no. 04 (2005): 489–520. http://dx.doi.org/10.1142/s0219455405001714.

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This paper presents a detailed treatment of the formulation of static, bucking and vibration analysis of non-prismatic thin-walled composite spatial members of generic section. The theory is limited to small strains, moderate deflections and small rotations. The torsional shear strain on the middle surface of the beam wall is zero for an open contour while it corresponds to constant shear flow for a closed contour. Rigorous expressions for strains based on membrane theory of shells are obtained through which the effect of nonlinear tapering is considered. Solutions for classical buckling and v

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ASTAKHOV, Sergey A., and Vasiliy I. BIRYUKOV. "Buckling under the action of loading by aerodynamic and inertial forces during ground track tests of aviation equipment." INCAS BULLETIN 13, S (2021): 5–12. http://dx.doi.org/10.13111/2066-8201.2021.13.s.1.

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The article analyses the choice of a rational layout of the test object with a propulsion system (PS). One of the design examples of calculating the longitudinal stability and strength of the structure is given. The purpose of the article is to solve the problem of bending the elastic line of a cantilever tubular rod with a hinged termination during tests of a propulsion system for various aircrafts. On the example, the estimates of the approximate test object, accelerated on the track to a speed of 1200 m/s, are carried out. The aerodynamic loading of the structure of the mobile track install

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Kirill, Trapezon, and Trapezon Alexandr. "CONSTRUCTION OF AN ALGORITHM TO ANALYTICALLY SOLVE A PROBLEM ON THE FREE VIBRATIONS OF A COMPOSITE PLATE OF VARIABLE THICKNESS." Eastern-European Journal of Enterprise Technologies 1, no. 7 (103) (2020): 26–33. https://doi.org/10.15587/1729-4061.2020.191123.

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The paper reports an algorithm to analytically solve one of the problems in the mechanics of elastic bodies, which is associated with studying the natural vibrations of a composite two-stage plate whose concave part is smoothly aligned with the part of a constant thickness. We have defined patterns for stating the boundary and transitional conditions, which should be taken into account when considering the natural vibrations of a two-stage plate. The ratios have been obtained, which make it possible to study the distribution of deflections and determine the values of amplitudes of the curved v

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Dissertations / Theses on the topic "Constant deflection contour method"

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Chakraborty, (Sengupta) Suparna. "Application of "constant deflection contour" method to problems of dynamic response of structures." Thesis, University of North Bengal, 2002. http://hdl.handle.net/123456789/2736.

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Boyle, Cameron. "A Closed-Form Dynamic Model of the Compliant Constant-Force Mechanism Using the Pseudo-Rigid-Body Model." BYU ScholarsArchive, 2003. https://scholarsarchive.byu.edu/etd/53.

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A mathematical dynamic model is derived for the compliant constant-force mechanism, based on the pseudo-rigid-body model simplification of the device. The compliant constant-force mechanism is a slider mechanism incorporating large-deflection beams, which outputs near-constant-force across the range of its designed deflection. The equation of motion is successfully validated with empirical data from five separate mechanisms, comprising two configurations of compliant constant-force mechanism. The dynamic model is cast in generalized form to represent all possible configurations of compliant co

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Book chapters on the topic "Constant deflection contour method"

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Kowalski I.M, Giżewski T., Zaborowska–Sapeta K., Protasiewicz–Fałdowska H., and Siwik P. "Assessment of trunk asymmetry in transversal plane by geometric outline of trunk deformation (GOTD)." In Studies in Health Technology and Informatics. IOS Press, 2012. https://doi.org/10.3233/978-1-61499-067-3-277.

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Due to its variety and changeability in time, trunk asymmetry is a symptom of body silhouette distortions, which is difficult to assess objectively. The parametric method involving a geometric outline of trunk deformation (GOTD) has been developed in order to provide a tool for an objective measurement comparable to further examinations. Despite the technology rapid development it still seems reasonable to use simple diagnostic methods available in all conditions, hence the authors' interest in the simplified topographic method employing the body contour tracer. For the diagnosis purpose it is

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M. Markad, Kanif, and Nilesh Tiwari. "Study of Temperature Variation over Shape Memory Polymer Hybrid Composite under Transverse Loading." In Soft Robotics - Recent Advances and Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.107988.

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The chapter presents a nonlinear bending analysis of layered shape memory polymer composite beams under the influence of uniformly distributed transverse load. Simplified Co continuity Finite Element Method based on Higher Order Shear Deformation Theory has been adopted for bending analysis of shape memory polymer composite (SMPC) and shape memory polymer nanocomposite sandwich (SMPNCS) beam. The numerical solutions are obtained by the iterative Newton-Raphson method with Von-Karman nonlinear kinematics. Material properties of SMPC with shape memory polymer (SMP) as matrix and carbon fiber as

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Sohal, Asha, Mrinalika Mrinalika, and Rekha H. "IMPRESSION CREEP BEHAVIOUR OF ALUMINIUM (7079)-BASED CARBON FIBRE REINFORCED METAL MATRIX COMPOSITES PERFORMANCE OF QUANTUM DOT BASED INTERMEDIATE BAND SOLAR CELLS." In 9th National Conference & Exhibition on Emerging and Innovative Trends in Engineering Technology (NCEEITET). IARS' Press Australia, 2023. https://doi.org/10.62431/c91jfa41.

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The objective of the current study is to evaluate the impression creep behavior of Aluminum-based Carbon Fiber reinforced Metal Matrix Composites for three different temperatures, namely, room temperature, 100oC, and 200oC, while applying a constant load of 2 kg, and to find the steady-state creep rates as well as the creep mechanism that is taking place. In this specific test, a cylindrical indenter that has a flat end is used to make a shallow imprint on the surface of the specimen'. This imprint is then examined. This imprint is created on the specimen as it is being stressed, and the tensi

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Veenadevi, A., P. Srinivasa Babu, and Pallavi Kurra. "Development and Optimization of Niosomes for Brain Targeting Using Response Surface Methodology." In Current Trends in Drug Discovery, Development and Delivery (CTD4-2022). Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/9781837671090-00477.

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The current research work deals with the combination of surfactants for vesicular drug delivery of potent chemotherapeutic drugs like capecitabine with advantages of controlled release as well as brain specific targeting. Niosomes formulation was optimized by employing a surface response method in which central composite designed was selected for getting a less number of formulations with better results using Design Expert software version V 11. The niosomes were formulated by using combination of span-80 and brij-78 as non-ionic surfactant by thin film hydration technique in which cholesterol

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Ram-Mohan, L. Ramdas. "The BEM and surface plasmons." In Finite Element and Boundary Element Applications in Quantum Mechanics. Oxford University PressOxford, 2002. http://dx.doi.org/10.1093/oso/9780198525219.003.0017.

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Abstract The boundary element method (BEM) can be used to advantage for solving differential equations in a region occupied by more than one material. Here the integral equations are formulated for each subregion, and the matrices obtained on discretization of the contour integrals are put together in a manner analogous to overlaying element matrices in the finite element method (FEM). In this chapter, we begin by solving Laplace’s equation for a physical domain having two rectangular regions with dielectric constants EJ and EIJ in a constant electric field. The example makes use of the calcul

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Subasic Marko, Loncaric Sven, and Sorantin Erich. "3-D image analysis of abdominal aortic aneurysm." In Studies in Health Technology and Informatics. IOS Press, 2000. https://doi.org/10.3233/978-1-60750-921-9-1195.

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In this paper we propose a technique for 3-D segmentation of abdominal aortic aneurysm (AAA) from computed tomography (CT) angiography images. Output data form the proposed method can be used for measurement of aortic shape and dimensions. Knowledge of aortic shape and size is very important for selection of appropriate stent graft device for treatment of AAA. The technique is based on a 3-D deformable model and utilizes the level-set algorithm for implementation of the method. The method performs 3-D segmentation of CT images and extracts a 3-D model of aortic wall. Once the 3-D model of aort

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Conference papers on the topic "Constant deflection contour method"

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Nabi, Tarik M., Hideo Sambé, and David E. Ramaker. "A Novel Anodic Dissolution Treatment on Pure Aluminum Dramatically Improves Its Passivation." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99325.

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Abstract A study of the anodic dissolution of polycrystalline aluminum utilizing in-situ Atomic Force Microscopy (AFM) is reported. Using a novel snodic dissolution treatment, square terraced pyramids (or “ziggurats”) of constant width are formed on the surface. AFM contour and profile plots reveal the extremely square and flat surfaces of the plateaus on top of the ziggurats, all of them having nearly the same size. This treatment on an Al sample is also shown to yield a substantial improvement in its passivation and corrosion properties. The improved passivation obtained through this method

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Akin, M. Bugra, Wolfgang Sanz, and Paul Pieringer. "Endwall Contour Optimization of a Turning Mid Turbine Frame Using an Adjoint Method." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26038.

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This paper presents the application of a viscous adjoint method in the optimization of the endwall contour of a turning mid turbine frame (TMTF). The adjoint method is a gradient based optimization method that allows for the computation of the complete gradient information by solving the governing flow equations and their corresponding adjoint equations only once per function of interest (objective and constraints), so that the computation time of the optimization is nearly independent of the number of parameters. With the use of a greater number of parameters a more detailed definition of end

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Kim, Doo Hwan, and Tulga M. Ozsoy. "New Sampling Strategies for Form Evaluation of Free-Form Surfaces." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/cie-9103.

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Abstract New strategies to determine the location of the measurement points for form evaluation of free-form surfaces by using Coordinate Measuring Machines are investigated. The newly developed corrected length method locates the measurement points on constant curvature contour lines. The length and the rank of each contour line are used as parameters to control the distribution of the measurement points. The experimental results have shown that the proposed method is more robust than the known methods currently being used for form evaluation of free-form surfaces. The method also offers oppo

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Kulesza, Zbigniew, and Jerzy T. Sawicki. "Controlled Deflection Approach for Rotor Crack Detection." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68960.

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A transverse shaft crack is a serious malfunction that can occur due to cyclic loading, creep, stress corrosion, and other mechanisms to which rotating machines are subjected. Though studied for many years, the problems of early crack detection and warning are still in the limelight of many researchers. This is due to the fact that the crack has subtle influence on the dynamic response of the machine and still there are no widely accepted, reliable methods of its early detection. This paper presents a new approach to these problems. The method utilizes the coupling mechanism between the bendin

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Rajalingham, C., R. B. Bhat, and G. D. Xistris. "Natural Frequencies and Mode Shapes of Elliptic Plates With Boundary Characteristic Orthogonal Polynomials As Assumed Shape Functions." In ASME 1991 Design Technical Conferences. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/detc1991-0294.

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Abstract The natural frequencies and natural modes of vibration of uniform elliptic plates with clamped, simply supported and free boundaries are investigated using Rayleigh-Ritz method. A modified polar coordinate system is used to investigate the problem. Energy expressions in Cartesian coordinate system are transformed into the modified polar coordinate system. Boundary characteristic orthogonal polynomials in the radial direction, and trigonometric functions in the angular direction are used to express the deflection of the plate. These deflection shapes are classified into four basic cate

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Bilancia, Pietro, Alessandro Geraci, and Giovanni Berselli. "On the Design of a Long-Stroke Beam-Based Compliant Mechanism Providing Quasi-Constant Force." In ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/smasis2019-5519.

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Abstract In this paper the design of a linear long-stroke quasi-constant force compliant mechanism (CM) is presented and discussed. Starting from a flexure-based slider-crank mechanism, providing the required constant force within a rather limited deflection range, the paper reports about the shape optimization carried out with the specific aim of extending the available CM operative range. The proposed device is suitable in several precision manipulation systems, which require to maintain a constant-force at their contact interface with the manipulated object. Force regulation is generally ac

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Saghafi, Fariborz, and Afshin Banazadeh. "Coanda Surface Geometry Optimization for Multi-Directional Co-Flow Fluidic Thrust Vectoring." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59715.

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The performance of Co-flow fluidic thrust vectoring is a function of secondary flow characteristics and the fluidic nozzle geometry. In terms of nozzle geometry, wall shape and the secondary slot aspect ratio are the main parameters that control the vector angle. The present study aims to find a high quality wall shape to achieve the best thrust vectoring performance, which is characterized by the maximum thrust deflection angle with respect to the injected secondary air. A 3D computational fluid dynamics (CFD) model is employed to investigate the flow characteristics in thrust vectoring syste

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Howell, Larry L., and Ashok Midha. "Evaluation of Equivalent Spring Stiffness for Use in a Pseudo-Rigid-Body Model of Large-Deflection Compliant Mechanisms." In ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0219.

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Abstract Compliant mechanisms gain some or all of their mobility from the flexibility of their members rather than from rigid-body joints only. More efficient and usable analysis and design techniques are needed before the advantages of compliant mechanisms can be fully utilized. In an earlier work, a pseudo-rigid-body model concept, corresponding to an end-loaded geometrically nonlinear, large-deflection beam, was developed to help fulfill this need. In this paper, the pseudo-rigid-body equivalent spring stiffness is investigated and new modeling equations are proposed. The result is a simpli

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Logan, Philip J., and Craig P. Lusk. "Pseudo-Rigid-Body Models for End-Loaded Heavy Cantilever Beams." 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/detc2015-46526.

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The large deflection of cantilever beams has been widely studied. A number of models and mathematical techniques have been utilized in predicting the path coordinates and load-deflection relationships of such beams. The Pseudo-Rigid-Body Model (PRBM) is one such method which replaces the elastic beam with rigid links of a parameterized pivot location and torsional spring stiffness. In this paper, the PRBM method is extended to include cases of a constant distributed load combined with a parallel endpoint force. The phase space of the governing differential equations is used to store informatio

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Wang, Jianjun, Minfu Lu, Daqing Zou, and Sheng Liu. "Investigation of Interfacial Fracture Behavior of a Flip-Chip Package Under a Constant Concentrated Load." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0505.

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Abstract In this paper, the interfacial fracture behavior of a flip-chip package subjected to a constant concentrated line load was investigated using a unique 6-axis submicron tester coupled with a high density laser moiré interferometry. The real-scale three-point bending flip-chip specimen, capable of measuring the crack growth rate (along the interface) and the interfacial fracture toughness was developed. The results show that the crack propagation along the interface of the passivated silicon chip/underfill under a constant concentrated load can be categorized into three stages: (1) stab

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Reports on the topic "Constant deflection contour method"

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FATIGUE TESTS OF COMPOSITE DECKS WITH MCL CONNECTORS. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/ijasc.2022.18.4.7.

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Full-scale fatigue tests were performed on three composite decks with the MCL (modified clothoid) connectors to investigate their fatigue performance. Fatigue life and failure mode of the composite bridge decks were explored by measuring the specimens with three different stress amplitudes. The deflection, strain, carrying capacity, and stiffness degradation of the composite decks were measured and analyzed in the test. In addition, parameter analysis was performed using finite-element method in this study. Results showed that the mechanical performance of the composite decks accorded with the

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