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Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "Method of receptances"

1

Schmitz, Tony L., and G. Scott Duncan. "Three-Component Receptance Coupling Substructure Analysis for Tool Point Dynamics Prediction." Journal of Manufacturing Science and Engineering 127, no. 4 (February 4, 2005): 781–90. http://dx.doi.org/10.1115/1.2039102.

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Анотація:
In this paper we present the second generation receptance coupling substructure analysis (RCSA) method, which is used to predict the tool point response for high-speed machining applications. This method divides the spindle-holder-tool assembly into three substructures: the spindle-holder base; the extended holder; and the tool. The tool and extended holder receptances are modeled, while the spindle-holder base subassembly receptances are measured using a “standard” test holder and finite difference calculations. To predict the tool point dynamics, RCSA is used to couple the three substructures. Experimental validation is provided.
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2

Tsai, Sung-Han, Huajiang Ouyang, and Jen-Yuan Chang. "A receptance-based method for frequency assignment via coupling of subsystems." Archive of Applied Mechanics 90, no. 2 (November 2, 2019): 449–65. http://dx.doi.org/10.1007/s00419-019-01619-9.

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Abstract This paper presents a theoretical study of the frequency assignment problem of a coupled system via structural modification of one of its subsystems. It deals with the issue in which the available modifications are not simple; for example, they are not point masses, grounded springs, or spring-mass oscillators. The proposed technique is derived based on receptance coupling technique and formulated as an optimization problem. Only a few receptances at the connection ends of each subsystem are required in the structural modification process. The applicability of the technique is demonstrated on a simulated rotor system. The results show that both bending natural frequencies and torsional natural frequencies can be assigned using a modifiable joint, either separately or simultaneously. In addition, an extension is made on a previously proposed torsional receptance measurement technique to estimate the rotational receptance in bending. Numerical simulations suggest that the extended technique is able to produce accurate estimations and thus is appropriate for this frequency assignment problem of concern.
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3

Huang, Shyh-Chin, and Chin-Ann Lin. "Sensitivity Analysis and Optimization of Undamped Rotor Critical Speeds to Supports Stiffness." Journal of Vibration and Acoustics 124, no. 2 (March 26, 2002): 296–301. http://dx.doi.org/10.1115/1.1456083.

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This paper introduced a new approach that employed the assumed-modes method and the receptance method, to the sensitivity analysis and the optimization of rotor-bearing systems. First, the frequency equation in terms of receptances was derived. The natural frequencies and the critical speeds for a typical rotor system were then illustrated. Beginning with the receptance equation, the authors, for the first time, derived a sensitivity matrix and employed it into an optimization process. The topographical method in conjunction with the variable metric method followed for the optimal solution. In the solution process, the sensitivity matrix provided important information for search direction. Examples of critical speeds adjustment via supports change in an optimal sense were illustrated. Numerical results showed that the approach was very efficient and the solutions were very accurate. This approach, in addition, provided such valuable information as which supports dominated specific critical speeds. The developed approach proved to be very helpful to rotor engineers in both rotor modification and rotor design.
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4

Huang, S. C., and B. S. Hsu. "Theory of Receptance Applied to Modal Analysis of a Spinning Disk With Interior Multi-Point Supports." Journal of Vibration and Acoustics 114, no. 4 (October 1, 1992): 468–76. http://dx.doi.org/10.1115/1.2930286.

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Анотація:
The theory of receptance applied to the modal analysis of a spinning disk with interior multi-point supports is developed. Traveling modes are first introduced for the vibration analysis of a spinning disk. The receptance method is then applied to join the spinning disk and the point supports. The frequency equation and mode shapes are then formulated. An important property, conjugate pairing of the cross receptances is derived. This feature has never been described before in the literature. Numerical results for various numbers of point supports are illustrated. The results show that the nodal pattern of a spinning disk with point supports is varying periodically. The change of rotation speed further causes the mode exchange phenomenon. The change of first critical speed due to point supports is also discussed.
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5

Yang, B. "Exact Receptances of Nonproportionally Damped Dynamic Systems." Journal of Vibration and Acoustics 115, no. 1 (January 1, 1993): 47–52. http://dx.doi.org/10.1115/1.2930313.

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Анотація:
This paper presents an exact method for evaluating the receptances of nonproportionally damped dynamic systems. Based on a decomposition of the damping matrix, an iteration procedure is developed. This method does not require matrix inversion, and completely eliminates the error caused by undamped modal data. Compared to the existing exact solution methods, the proposed method can save more time in the computation. Also, the study yields a convenient way to determine the asymptotic stability of nonproportionally damped systems.
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6

Lee, C. H., and K. P. Byrne. "Calculating the Time-Histories of Impacting Systems Described by Their Receptances." Journal of Vibration and Acoustics 120, no. 2 (April 1, 1998): 491–95. http://dx.doi.org/10.1115/1.2893856.

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Анотація:
The behavior of impacting systems is highly nonlinear and generally numerical analysis must be resorted to if a quantitative description of the behavior of such systems is required. However, the behaviour of the individual subsystems is often reasonably linear and this along with the fact that the subsystems come into contact when the relative displacements between contact points is zero make it convenient to base the analysis on the receptances, that is, the displacement-force frequency response functions, at the contact points. The procedure for doing this is described with reference to a lumped parameter model. Simple formulae are developed to aid the numerical analysis. The extension of the method to consider continuous systems and those defined by measured receptances is described and examples based on numerically derived and experimentally derived receptances are given.
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7

Montalvão, D., A. M. R. Ribeiro, N. M. M. Maia, and J. M. M. Silva. "Estimation of the Rotational Terms of the Dynamic Response Matrix." Shock and Vibration 11, no. 3-4 (2004): 333–50. http://dx.doi.org/10.1155/2004/780837.

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Анотація:
The dynamic response of a structure can be described by both its translational and rotational receptances. The latter ones are frequently not considered because of the difficulties in applying a pure moment excitation or in measuring rotations. However, in general, this implies a reduction up to 75% of the complete model. On the other hand, if a modification includes a rotational inertia, the rotational receptances of the unmodified system are needed. In one method, more commonly found in the literature, a so called T-block is attached to the structure. Then, a force, applied to an arm of the T-block, generates a moment together with a force at the connection point. The T-block also allows for angular displacement measurements. Nevertheless, the results are often not quite satisfactory. In this work, an alternative method based upon coupling techniques is developed, in which rotational receptances are estimated without the need of applying a moment excitation. This is accomplished by introducing a rotational inertia modification when rotating the T-block. The force is then applied in its centroid. Several numerical and experimental examples are discussed so that the methodology can be clearly described. The advantages and limitations are identified within the practical application of the method.
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8

Tehrani, M. Ghandchi, and H. Ouyang. "Receptance-Based Partial Pole Assignment for Asymmetric Systems Using State-Feedback." Shock and Vibration 19, no. 5 (2012): 1135–42. http://dx.doi.org/10.1155/2012/564061.

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Анотація:
Many structures or machines interact with some internal nonconservative forces and present asymmetric systems in which the stiffness and damping matrices are asymmetric. Examples include friction-induced vibration and aeroelastic flutter. Asymmetric systems are prone to flutter instability as a result of the real parts of some poles becoming positive when certain system parameters vary.This paper presents a receptance-based inverse method for assigning a number of complex poles of second-order damped asymmetric systems while keeping other unassigned poles unchanged. It uses state-feedback (active damping and active stiffness) to shift the poles to desired locations where all poles have negative real parts. Receptances at only a small, limited number of degrees-of-freedom of the underlying symmetric system are required. Simulated numerical examples indicate that this is an effective method and is capable of assigning negative real parts to unstable poles to stabilise an otherwise unstable second-order dynamic system.
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9

Ghandchi Tehrani, Maryam, John E. Mottershead, Andrew T. Shenton, and Yitshak M. Ram. "Robust pole placement in structures by the method of receptances." Mechanical Systems and Signal Processing 25, no. 1 (January 2011): 112–22. http://dx.doi.org/10.1016/j.ymssp.2010.04.005.

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10

Araújo, José Mário, Jason Bettega, Nelson J. B. Dantas, Carlos E. T. Dórea, Dario Richiedei, and Iacopo Tamellin. "Vibration Control of a Two-Link Flexible Robot Arm with Time Delay through the Robust Receptance Method." Applied Sciences 11, no. 21 (October 23, 2021): 9907. http://dx.doi.org/10.3390/app11219907.

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Анотація:
This paper proposes a method for active vibration control to a two-link flexible robot arm in the presence of time delay, by means of robust pole placement. The issue is of practical and theoretical interest as time delay in vibration control can cause instability if not properly taken into account in the controller design. The controller design is performed through the receptance method to exactly assign a pair of pole and to achieve a given stability margin for ensuring robustness to uncertainty. The desired stability margin is achieved by solving an optimization problem based on the Nyquist stability criterion. The method is applied on a laboratory testbed that mimic a typical flexible robotic system employed for pick-and-place applications. The linearization assumption about an equilibrium configuration leads to the identification of the local receptances, holding for infinitesimal displacements about it, and hence applying the proposed control design technique. Nonlinear terms, due to the finite displacements, uncertainty, disturbances, and the coarse encoder quantization, are effectively handled by embedding the robustness requirement into the design. The experimental results, and the consistence with the numerical expectations, demonstrate the method effectiveness and ease of application.
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Дисертації з теми "Method of receptances"

1

Brown, Richard Nicholas. "Optimization of Control Surface Parameters Towards Active Aeroservoelastic Control Using the Method of Receptances." Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1470319384.

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Oliver, Danielle Simonette. "Power Requirements of Control Surface Actuators Towards Active Aeroelastic Control Using the Method of Receptances." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami159601703575348.

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3

Tehrani, Maryam Ghandchi. "Passive modification and active vibration control by receptance method." Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.441935.

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4

McDonough, Laura. "Receptance Based Control of Aeroelastic Systems for Flutter Suppression." Miami University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=miami1355500262.

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5

Pokorný, Jan. "Výpočtové modelování radiálních hydrodynamických ložisek pro vodní stroje." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-382572.

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The aim of this thesis is to calculate the stiffness and damping coefficients for radial hydrodynamic bearings. Cylindrical and lemon hydrodynamic bearings are considered. The solution to this problem mainly depends on the hydrodynamic pressure in the bearing. The numerical solution of the Reynolds equation is used to calculate the pressure. The effect of variable viscosity and density of the lubricant due to temperature changes is considered. The static equilibrium position of the journal centre is also solved. The stiffness and damping coefficients are determined using small amplitude journal motions about the equilibrium position. Three methods for determining these coefficients are presented. The outcome of this thesis is an algorithm for the calculation of stiffness and damping coefficients for cylindrical and lemon bearings. Results for lemon bearings are presented and comparison with the commercial software DynRot BR is made. The benefit of this thesis is the creation of an algorithm for the calculation of journal centre equilibrium position, a new way of incorporating the temperature changes in the viscosity and the density of the lubricant, and the modification of a method for calculating stiffness and damping coefficients based on experimental analogy.
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6

Wu, Wu-Chan, and 巫武錩. "Vibration response synthesis using receptance method." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/15211057398957045565.

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Анотація:
碩士
國立中正大學
機械工程學系暨研究所
99
This thesis focuses on synthesizing a pre-designative periodic vibration response of a structure based on receptance technique. Examples Numerical simulations as well as experiments are presented to demonstrate how to produce pre-designative square and sawtooth vibration responses using a cantilever actuated by piezoelectric patches. The cantilever is divided into several sub-systems and the cantilever receptance is derived by coupling the individual receptance of each sub-system based on conditions of force equilibrium and responses compatibility at the interface between two subsystems. Numerical results from receptance method are verified by the assumed modes method. In experiment, the voltage of piezoelectric patches which are bonded on a cantilever to produce the pre-designative response is determined using receptance method. Results from numerical simulation show that the displacement response produced by the cantilever agrees well with the pre-designative displacement and their difference quantified using root mean square is less than 0.01%. On the other hand, results from experiments show that the difference between the pre-designative displacement and that produced by the cantilever actuated by piezoelectric patches is 10% approximately.
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7

Pai, Li-sheng, and 白立生. "Analyzing Elastic Buckling Characteristics of Combined Structures by the Receptance Method." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/48677670249596914098.

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Анотація:
碩士
龍華科技大學
機械系碩士班
92
In designing beam/column structures, one of the important factors to be taken into account is the capability to sustain the compressive axial forces. As the compressive axial force exceeds the critical value, the beam/column buckles. Therefore, the reinforcing structures are often applied laterally to prevent the beam/column structures from buckling. In this study, the receptance method was adopted to analyze the elastic buckling characteristics of the combined structures consist of a number of sub-structures and to obtain the approximate solutions. At first, a simply supported beam, which is laterally supported by multiple linear springs and torsional springs, was taken as an example. Investigation was made to understand how those parameters such as the type, the quantity, the location and the stiffness of the spring affect the buckling behavior of the beam. Secondly, a simply supported beam, which was subjected to a compressive axial force and joined to a parallel reinforcing beam at finite locations, was studied to realize how the number and the location of the joint, the stiffness of the reinforcing beam affect the buckling characteristics. Comparing the results obtained by the receptance method to those by the finite element code, ANSYS, it is seen that they agree well. It verifies the validity of the receptance method in analyzing the elastic buckling characteristics of certain combined structures considered in this study.
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8

Huang, Jian-Fa, and 黃建發. "A Syudy on Vibration of An Annular Plate by the Reverse Receptance Method." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/31774877371681587093.

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Анотація:
碩士
國立臺灣大學
機械工程學研究所
90
In this thesis, the reverse receptance approach (RRA) is implemented to solve vibration problems of the circular plates. The annular plate, which can be regarded as a combination of a larger solid circular plate and a deducted smaller plate, is taken as an example for illustration of the sub-structural deduction concept. Applying RRA of the first order (employing either the shear or the moment connection) and the second order (employing both the shear and the moment connections), the natural frequencies and the mode shapes of the annular plate can be obtained. The influence of the ratio of radii on the dynamic characteristics is also studied. The results obtained by RRA are all compared with those obtained by FEM to evaluate its accuracy and adequacy.
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9

GROSSI, NICCOLO'. "Modeling and simplification methods for machine tool dynamics prediction in high speed milling." Doctoral thesis, 2015. http://hdl.handle.net/2158/1005746.

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Анотація:
Unstable vibration phenomenon known as chatter is the most limiting factor to the performances of modern milling machine. Stability Lobe Diagram (SLD) is the main tool adopted to avoid chatter, and improve machine tool productivity, since it allows selecting optimal cutting parameters (spindle speed and engagement condition) to ensure a stable operation at the highest material removal rate. This chart can be obtained with simulation, thanks to predictive approaches, or directly by means of experimental tests. The aim of this thesis was to increase the reliability of Stability Lobe Diagram, and to propose and develop new identification techniques in order to support its industrial applications. Different methods have been analyzed both for chatter prediction, and experimental detection. In particular for prediction, research has been principally focused on the main inputs required: tool-tip Frequency Response Functions (FRFs) and cutting force coefficients. Machine tool dynamics has been investigated with the aim at developing methods to quickly and accurately identify tool-tip FRFs, key factor for a reliable chatter prediction. Both full Finite Element models of machine tool, and hybrid experimental-numerical methods have been analyzed and implemented, studying their application limits. On the other hand cutting speed dependence of cutting force coefficients has been investigated in order to improve their reliability in High Speed Milling (HSM). Moreover this work presents an experimental detection technique called Spindle Speed Ramp-up test. Thanks to this technique with few cutting tests Stability Lobe Diagram can be accurately identified without any approximation introduced by predictive approaches. All the proposed methods have been validated and critically discussed. The main goal of this Ph.D. thesis is to improve industrial application of vibrations prediction and detection approaches in milling, proposing simplified methods and easy-to- use systems. In order to do so an extensive critical analysis on advantages and drawbacks of different techniques is here presented.
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Частини книг з теми "Method of receptances"

1

Singh, Kumar Vikram. "Active Control with the Method of Receptances: Recent Progresses and Its Application in Active Aeroelastic Control." In Mathematical Modelling and Scientific Computing with Applications, 159–82. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1338-1_13.

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2

Canbaloğlu, Güvenç, and H. Nevzat Özgüven. "Experimental Validation of Pseudo Receptance Difference (PRD) Method for Nonlinear Model Updating." In Nonlinear Dynamics, Volume 1, 293–306. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-15221-9_26.

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3

Samin, R., M. Ghandchi Tehrani, and John E. Mottershead. "Active Vibration Suppression by the Receptance Method: Partial Pole Placement, Robustness and Experiments." In Springer Proceedings in Physics, 371–77. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-2069-5_50.

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4

Wei, Xiaojun, and John E. Mottershead. "Limit Cycle Assignment in Nonlinear Aeroelastic Systems Using Describing Functions and the Receptance Method." In Topics in Modal Analysis, Volume 7, 701–13. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6585-0_67.

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Тези доповідей конференцій з теми "Method of receptances"

1

Lammens, Stefan, Marc Brughmans, Jan Leuridan, Ward Heylen, and Paul Sas. "Updating of Dynamic Finite Element Models Based on Experimental Receptances and the Reduced Analytical Dynamic Stiffness Matrix." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0694.

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Анотація:
Abstract This paper presents a model updating method based on experimental receptances. The presented method minimises the so called ‘indirect receptance difference’. First, the reduced analytical dynamic stiffness matrix is expressed as an approximate, linearised function of the updating parameters. In a numerically stable, iterative procedure, this reduced analytical dynamic stiffness matrix is changed in such a way that the analytical receptances match the experimental receptances at the updating frequencies. The updating frequencies are a set of selected frequency points in the frequency range of interest. Some considerations about an optimal selection of the updating frequencies are given. Finally, a mixed static-dynamic reduction scheme is discussed. Dynamic reduction of the analytical dynamic stiffness matrix at each updating frequency is physically exact, but it involves a great computational effort. The presented mixed static-dynamic reduction scheme is a simple strategy to reduce the computational cost with a minor loss of accuracy.
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2

Burns, Timothy J., and Tony L. Schmitz. "A Study of Linear Joint and Tool Models in Spindle-Holder-Tool Receptance Coupling." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-85275.

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Анотація:
The dynamics of a spindle-holder-tool (SHT) system during high-speed machining is sensitive to changes in tool overhang length. A well-known method for predicting the limiting depth of cut for avoidance of tool chatter requires a good estimate of the tool-point frequency response (FRF) of the combined system, which depends upon the tool length. In earlier work, a combined analytical and experimental method has been discussed, that uses receptance coupling substructure analysis (RCSA) for the rapid prediction of the combined spindle-holder-tool FRF. The basic idea of the method is to combine the measured direct displacement vs. force receptance (i.e., frequency response) at the free end of the spindle-holder (SH) system with calculated expressions for the tool receptances based on analytical models. The tool was modeled as an Euler-Bernoulli (EB) beam, the other three spindle-holder receptances were set equal to zero, and the model for the connection with the tool led to a diagonal matrix. The main conclusion of the earlier work was that there was an exponential trend in the dominant connection parameter, which enabled interpolation between tip receptance data for the longest and shortest tools in the combined SHT system. Thus, a considerable savings in time and effort could be realized for the particular SHT system. A question left open in the earlier work was: how general is this observed exponential trend? Here, to explore this question further, an analytical EB model is used for the SH system, so that all four of its end receptances are available, and the tool is again modeled as a free-free EB beam that is connected to the SH by a specified connection matrix, that includes nonzero off-diagonal terms. This serves as the “exact” solution. The approximate solution is once again formed by setting all but one SH receptance equal to zero, and the connection parameters are determined using nonlinear least squares software. Both diagonal and full connection matrices are investigated. The main result is that, for this system, in the case of a diagonal connecting matrix, there is no apparent trend in the dominant connecting spring stiffness with tool overhang length. However, in the full connecting matrix case, a general constant trend is observed, with some interesting exceptions.
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3

Tehrani, Maryam Ghandchi, John E. Mottershead, and Yitshak M. Ram. "Eigenvalue Sensitivity Assignment by the Receptance Method." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59357.

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Анотація:
In this paper the problem of eigenvalue assignment in active vibration control by the receptance method using single-input state feedback is considered. The poles of the system and their sensitivities are assigned using measured vibration data from the open-loop system in the form of receptances, there being no need to evaluate or to know the system matrices M, C, K. The perturbation method is applied to a characteristic equation resulting in expressions for the derivatives of the pole eigenvalues with respect to the control gains. These sensitivities are expressed as a linear combination of the feedback control gains. The control effort necessary to assign the poles may be reduced by increasing the sensitivity of the poles. In addition, the uncontrolled poles in the system may be rendered insensitive for stability robustness. It is demonstrated that chosen eigenvalues may be rendered insensitive to all the control gain terms by choice of the distribution vector b. Numerical examples are provided to demonstrate how the technique works.
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4

Burns, Timothy J., and Tony L. Schmitz. "Receptance Coupling Study of Tool-Length Dependent Dynamic Absorber Effect." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60081.

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Анотація:
The chatter-free material removal rate during high-speed machining of aluminum using long, slender endmills is limited by the cutting system dynamics, which changes with the tool length. Traditional stability-lobe diagrams that predict the maximum allowable chip width for a given spindle speed are determined using the tool point frequency response function. A brief review is given of a combined analytical and experimental method that uses receptance coupling substructure analysis (RCSA) for the rapid prediction of the tool-point frequency response as the tool length is varied. The basic idea of the method is to combine the measured direct displacement vs. force receptance (i.e., frequency response) at the free end of the spindle-holder system with analytical expressions for the tool receptances. The method is then used to provide an explanation for the dynamic absorber effect that has been observed in the context of tool-length tuning.
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Zeng, Kaichun, Binbin Lv, Li Yu, Xiping Kou, and Xinghua Yang. "Active Vibration Suppression of Transonic Wind Tunnel Models by The Method of Receptances." In ICITEE2021: The 4th International Conference on Information Technologies and Electrical Engineering. New York, NY, USA: ACM, 2021. http://dx.doi.org/10.1145/3513142.3513153.

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6

Huang, Shyh-Chin, and Chen-Kai Su. "Vibrations of Spinning Rings With Radial and Circumferential Displacement Constraints." In ASME 1991 Design Technical Conferences. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/detc1991-0286.

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Abstract The frequencies and mode shapes of rolling rings with radial and circumferential displacement constraints are investigated. The displacement constraints practically come from the point contact, e.g., rolling tire on the road, or other applications. The proposed approach to analysis is calculating the natural frequencies and modes of a non-contacted spinning ring, then employing the receptance method for displacement constraints. The frequency equation for the constrained system is hence obtained, and it can be solved numerically or graphically. The receptance matrix developed for the spinning ring is surprisingly found not symmetric as usual. Moreover, the cross receptances are discovered to form complex conjugate pairs. That is a feature that has never been described in literature. The results show that the natural frequencies for the spinning ring in contact, as expected, higher than those for the non-contacted ring. The variance of frequencies to rotational speeds are then illustrated. The analytic forms of mode shapes are also derived and sketched. The traveling modes are then shown for cases.
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7

Schmitz, Tony L. "Improved Sensor Data Utility Through Receptance Coupling Modeling." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59762.

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This paper describes compensation for scaling and frequency distortion errors arising from non-ideal sensor placement on mechanical structures. The mathematical approach is based on receptance coupling techniques for assembly dynamics prediction and offers a hybrid method where measured and modeled component frequency response functions, or receptances, are analytically coupled using rigid, flexible, or flexible/damped compatibility conditions to predict the assembly response at any spatial location. This method offers an alternative to existing finite element analysis packages that can accurately describe natural frequencies and mode shapes, but are generally less successful at predicting properly-scaled assembly dynamic responses. The ability to accurately predict assembly dynamics allows sensor data recorded at one location on the structure to be compensted for the structural dynamics between the measurement point and actual location of interest. Additionally, knowledge of the response at any location on the structure enables mode shape prediction and, therefore, selection of high signal-to-noise ratio sensor locations.
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8

Kandala, Shanti Swaroop, Sayan Chakraborty, and C. P. Vyasarayani. "Comparing method of receptances and optimization-based techniques for pole placement of time-delayed systems." In 2019 Fifth Indian Control Conference (ICC). IEEE, 2019. http://dx.doi.org/10.1109/indiancc.2019.8715615.

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9

Park, Simon S., and Yusuf Altintas. "Identification of Spindle Integrated Force Sensor’s Transfer Function for Modular End Mills." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42369.

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A spindle integrated cutting force system is studied in the paper. Piezoelectric force sensors are embedded to the spindle housing. The transfer function between the force experienced at the end mill and measured at the spindle integrated force sensor varies depending on the stick out length of the end mill. The paper proposes a method which predicts the transfer function of the overall system by coupling the receptances of the analytically modeled end mill and experimentally measured spindle structures. The experimentally proven method allows automated calibration of the spindle integrated force system whenever a tool change occurs.
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10

Lai, Peter C. C., and Werner Soedel. "Line Impedance Method in 2-D Gas Pulsation Modeling." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-1065.

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Abstract A general procedure for the analysis of curved or flat, thin two dimensional gas cavities such as thin compressor or engine manifolds or so-called thin shell type muffler elements, which can efficiently utilize the limited space of hermetically sealed compressors or small engine compartments, has been developed by the authors (1996a and 1996b), as long as the thickness of the cavities is substantially small compared to the shortest wavelength of interest. However, for an acoustic system which consists of two different thin gas cavities sharing a common line like boundary, some modifications of this general procedure are required. In this study, a simplified refrigeration compressor manifold model, whose geometry is similar to a circular disk box attached to a cylindrical cavity, is investigated. In order to use the general formulations to solve for the forced responses, the natural frequencies and natural modes of this compressor model have to be first determined by a line impedance method proposed by the authors (1996c). Line impedances are formulated, in analogy to line receptances in structural analysis, from the pressure responses of the cylinder and disk cavities to the line volume flow rate inputs which are distributed harmonically along the circular interface of the two subsystems. The frequency characteristic equation is derived and then solved for the natural frequencies and mode shapes of the compressor model. The acoustic four poles and transfer function are finally obtained by substituting the natural frequencies and mode shapes into the general formulations.
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