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Journal articles on the topic 'Mass inertia'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Kou, Farong, and Jiaolian Li. "Nonlinear modeling of ball screw-type inertial container suspension." Journal of Physics: Conference Series 2905, no. 1 (2024): 012001. https://doi.org/10.1088/1742-6596/2905/1/012001.

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Abstract In order to better reduce the influence of spring-loaded mass inertia on vehicle suspension performance and make it better adapt to road excitation, this paper proposes a ball screw inertial container suspension configuration with adjustable inertia coefficient. By adjusting the mass of the flywheel part of the passive ball screw inertial container in the radial direction, the rotating radius is changed under the action of centrifugal force, and then the rotating inertia is changed, so that the rotating inertia of the flywheel can be adjusted with the rotating speed of the flywheel it

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2

Sun, Ling, Peng Yu, and Tong Zhang. "Measurement Method Research on Inertial Parameters of Motor Assembly." Applied Mechanics and Materials 437 (October 2013): 663–68. http://dx.doi.org/10.4028/www.scientific.net/amm.437.663.

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Inertial parameters of the motor assembly include its mass, CM (center of mass) position, moment of inertia and product of inertia. Taking one vehicle drive motor as the research object, its mass and CM position are measured by using weight method and moment balance method respectively. Its moment of inertia and product of inertia are measured by using three-wire pendulum. On the basis of analyzing the test error, this paper proposed specific measures to reduce the test error.

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3

McCulloch, Michael E., and Jaume Giné. "Modified inertial mass from information loss." Modern Physics Letters A 32, no. 28 (2017): 1750148. http://dx.doi.org/10.1142/s0217732317501486.

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A modification of inertia (called MiHsC or quantized inertia) has been proposed that assumes that inertia is caused by Unruh radiation, and that this radiation is made inhomogeneous in space by either Rindler horizons caused by acceleration or the distant Hubble horizon. The former predicts the standard inertial mass, and the latter predicts galaxy rotation without dark matter and cosmic acceleration without dark energy. It is proposed here that this model can be derived in an alternative way by assuming that the sum of mass (M), energy (E) and the information content of horizons (I) is conser

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4

Berg, C., and J. Rayner. "The moment of inertia of bird wings and the inertial power requirement for flapping flight." Journal of Experimental Biology 198, no. 8 (1995): 1655–64. http://dx.doi.org/10.1242/jeb.198.8.1655.

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The agility and manoeuvrability of a flying animal and the inertial power required to flap the wings are related to the moment of inertia of the wings. The moments of inertia of the wings of 29 bird species and three bat species were determined using wing strip analysis. We also measured wing length, wing span, wing area, wing mass and body mass. A strong correlation (r2=0.997) was found between the moment of inertia and the product of wing mass and the square of wing length. Using this relationship, it was found that all birds that use their wings for underwater flight had a higher than avera

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5

Giné, J., and M. E. McCulloch. "Inertial mass from Unruh temperatures." Modern Physics Letters A 31, no. 17 (2016): 1650107. http://dx.doi.org/10.1142/s0217732316501078.

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It has been proposed that inertia can be explained as follows: when objects accelerate in one direction, a Rindler horizon forms in the other direction suppressing Unruh radiation on that side and producing a net Unruh radiation pressure that always opposes the acceleration, just like inertia. So far, this model has predicted masses over twice those expected. In this paper, an error in this model is corrected so that its prediction improves to within 29% of the expected Planck mass. It is also shown that inertial mass may be understood qualitatively by applying Carnot’s principle and entropy t

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6

Mikhailov, E. A., and V. B. Fedorov. "Study of the design parameters of the onboard system for changing the massinertia characteristics of the aircraf." Bulletin of the South Ural State University series "Mechanical engineering industry" 23, no. 1 (2023): 50–62. http://dx.doi.org/10.14529/engin230105.

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The paper presents the results of a study of a new concept of a system for changing the mass-inertial characteristics of nominally axisymmetric rotor structures, in particular, aircraft of an axisymmetric shape. This system can be used for static and dynamic balancing of the product directly during operation and is a balancing weight installed on the movable platform of the mechanism with parallel kinematics of the hexapod type. It can be applied, including for nominally axisymmetric aircraft, to parry disturbances from asymmetries of various kinds by purposefully creating a mass-inertial asym

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7

Gao, Sumei, Longxiang Xu, and Chaowu Jin. "Performance Analysis of Acceleration and Inertial Force of Electromagnetic Suspension Inertial Stabilizer." Applied Sciences 12, no. 11 (2022): 5304. http://dx.doi.org/10.3390/app12115304.

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In this paper, the structural characteristics of electromagnetic suspension (EMS) inertial stabilizers are analyzed firstly, and then a mechanical analysis of a single mass block and double mass block is carried out. The relationship model between the inertial anti-rolling mass block and inertial force transmitted to the ship is established. The inertial force is determined by the number of coil turns, coil current, mass block, mass of the ship, electromagnet current, rate of change of the electromagnet current, air gap between the electromagnet and inertial mass block, and rotational angular

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8

Martins, Alexandre A., and Mario J. Pinheiro. "On the Electromagnetic Origin of Inertia and Inertial Mass." International Journal of Theoretical Physics 47, no. 10 (2008): 2706–15. http://dx.doi.org/10.1007/s10773-008-9709-y.

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9

Kushwaha, Prabhakar, Sanjoy K. Ghoshal, and Kabir Dasgupta. "Dynamic analysis of a hydraulic motor drive with variable inertia flywheel." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 234, no. 6 (2019): 734–47. http://dx.doi.org/10.1177/0959651819875914.

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A flywheel is presented in this article, which can adaptively generate variable inertia in response to the application requirements in a hydraulic drive. The said flywheel consists of four sliders in the guide track of a host flywheel frame which change its position as the rotational speed of the flywheel varies. The varying distance between the slider and the center of rotation leads to a variable inertial mass. This passive inertial mass has a potential to reduce the speed fluctuations of the drive. A comparative study has been made on the effects of the variable inertia flywheel on the hydr

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10

ENNOS, A. ROLAND. "INERTIAL AND AERODYNAMIC TORQUES ON THE WINGS OF DIPTERA IN FLIGHT." Journal of Experimental Biology 142, no. 1 (1989): 87–95. http://dx.doi.org/10.1242/jeb.142.1.87.

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1. The magnitude and distribution of the torques caused by inertial and aerodynamic forces on the wings of Diptera in flight are calculated. 2. The bending torque at stroke reversal due to the inertia of the virtual mass of air bound to the wing is only slightly less than the torque due to the inertia of the wing mass itself. The maximum inertial torque due to both wing mass and virtual mass is usually slightly greater than the maximum aerodynamic torque encountered by the wings. 3. Bending torques decrease rapidly away from the wing base. 4. Pitching torques are much smaller than bending torq

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11

Chang, Y. H., H. W. Huang, C. M. Hamerski, and R. Kram. "The independent effects of gravity and inertia on running mechanics." Journal of Experimental Biology 203, no. 2 (2000): 229–38. http://dx.doi.org/10.1242/jeb.203.2.229.

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It is difficult to distinguish the independent effects of gravity from those of inertia on a running animal. Simply adding mass proportionally changes both the weight (gravitational force) and mass (inertial force) of the animal. We measured ground reaction forces for eight male humans running normally at 3 m s(−)(1) and under three experimental treatments: added gravitational and inertial forces, added inertial forces and reduced gravitational forces. Subjects ran at 110, 120 and 130 % of normal weight and mass, at 110, 120 and 130 % of normal mass while maintaining 100 % normal weight, and a

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12

Yu Kuprikov, Mikhail, and Nikita Kuprikov. "Methodology for finding the virtual center of mass of the aircraft." Journal of Physics: Conference Series 2373, no. 7 (2022): 072032. http://dx.doi.org/10.1088/1742-6596/2373/7/072032.

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Abstract There are types of aircraft for which the geometric shapes are primarily due to “hard” infrastructural constraints. The secondary nature of aerodynamic requirements makes it possible to deviate from the traditional design task. And move on to the Inverse Design Problem. A solution that allows you to reduce the number of design iterations and narrow the search for a rational solution in the Pareto-optimal area. These aircraft include vertical takeoff and landing aircraft. After analyzing the characteristics of moment-inertia units obtained after an analytical experiment, it shows that

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13

Popov, I. P. "Electromagnetic device for spacecraft orientation." Spacecrafts & Technologies 6, no. 2 (2022): 119–22. http://dx.doi.org/10.26732/j.st.2022.2.06.

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It is shown that the basis for the creation of an «artificial» mass which is not related to either the volume or the density of the material contained in an artificially inert object, is the requirement to satisfy Newton's second law. Of interest is the possibility of creating conditions for the emergence of an artificial moment of inertia. Since the principle of equivalence between inertial and gravitational mass does not apply to artificial mass, a device with artificial mass can be incomparably lighter than its mechanical counterpart with the same moment of inertia. This quality makes such

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14

Nguyen Tuan, Anh. "Real-time estimation of vehicle inertia parameters based on Kalman-bucy filter." Transport and Communications Science Journal 75, no. 4 (2024): 1593–603. http://dx.doi.org/10.47869/tcsj.75.4.10.

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Vehicle inertial parameters such as mass and moments of inertia are required for most vehicle dynamic control systems. Due to the wide range variation of these parameters during vehicle operation, accurate estimation of their values in real-time plays an important role in improving the efficiency of vehicle control systems. In this article, the vehicle sprung mass and moments of inertia are estimated in real-time based on a Kalman-Bucy filter algorithm designed for a spatial vibration model of a two-axle truck. This proposed method requires measuring only the vertical, roll, and pitch velocity

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15

Jang, Jaeyoung, and Jong Hyeon Park. "A Method of Estimating an Object’s Parameters Based on Simplication with Momentum for a Manipulator." Applied Sciences 15, no. 7 (2025): 3989. https://doi.org/10.3390/app15073989.

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For a manipulator to estimate an object’s inertial parameters—such as mass, center of mass position, and elements of the inertia tensor—it must grasp one side of the object and generate motion while utilizing the resulting forces and torques at its end-effector for estimation. In most previous studies, the estimation motion has involved high acceleration, resulting in larger motion trajectories and increased inertial forces. A larger trajectory raises the risk of collisions, while greater inertial forces could potentially damage the object. This paper introduces an innovative approach that sim

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16

Jaroslav, Grydzhuk, Chudyk Igor, Velychkovych Andriy, and Andrusyak Andriy. "ANALYTICAL ESTIMATION OF INERTIAL PROPERTIES OF THE CURVED ROTATING SECTION IN A DRILL STRING." Eastern-European Journal of Enterprise Technologies 1, no. 7 (97) (2019): 6–14. https://doi.org/10.5281/zenodo.3474783.

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We have proposed approaches to analytical assessment of the moment of inertia related to the curved rotary sections in a drill string. Research into rotation processes of the curvilinear sections in a drill string is associated at present with a particular difficulty, which arose because of the lack of precise expressions to evaluate the moments of inertia for a curved pipe based on the parameters of its deformation. Solution to such problems is important for the analysis of dynamic resistance of drill strings at rotor and rotor-turbine drilling techniques, when studying the stressed-strained

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17

Yan, Gang Yi. "An Adjustable Inertia Balance Support for High-Speed Scanning Probe Microscope." Advanced Materials Research 1061-1062 (December 2014): 735–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1061-1062.735.

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An adjustable inertia balance support is proposed to counterbalance the inertial force from the actuators for high performance scanning probe microscope. The adjusting method is based on voltage proportion control. In contrast with traditional method that adding or removing mass, it is very convenient to adjust to minimize the inertial force transmitted to the supporting base. It may have a promising application on the current inertia balance support structure, which is used in some high-speed scanning probe microscope. What is more, it has a very good compatibility with current structure.

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18

Dhaouadi, Rached, and Ishaq Hafez. "Identification of Shaft Stiffness and Inertias in Flexible Drive Systems." Journal of Robotics and Mechatronics 35, no. 1 (2023): 212–17. http://dx.doi.org/10.20965/jrm.2023.p0212.

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This letter presents an identification method for motor drive systems with flexible shafts and couplings using frequency response measurement. The drive system can be approximated as a two-mass non-rigid mechanical system to model the lowest resonant frequency with three parameters to be identified: the motor side inertia, the load side inertia, and the shaft stiffness. The proposed method does not require knowledge of the total inertia as many other techniques require. However, additional known inertia is added or removed from the load side assembly. The frequency response measurement is carr

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19

Pasricha, M. S. Pasricha, and F. M. Hashim. "Effect of the reciprocating mass of slider-crank mechanism on torsional vibrations of diesel engine systems." ASEAN Journal on Science and Technology for Development 23, no. 1&2 (2017): 71. http://dx.doi.org/10.29037/ajstd.94.

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The torsional vibration phenomenon in the running gear of reciprocating engine systems isusually dealt with by considering a series of constant inertias connected by sections of massless shafting. However in reality, a slider crank mechanism is a vibrating system with varying inertia because the effective inertia of the total oscillating mass of each crank assembly varies twice per revolution of the crankshaft. Large variations in inertia torques can give rise to the phenomenonof secondary resonance in torsional vibration of modern marine diesel engines which can not be explained by convention

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20

Tondji, Y., and R. M. Botez. "Semi-empirical estimation and experimental method for determining inertial properties of the Unmanned Aerial System – UAS-S4 of Hydra Technologies." Aeronautical Journal 121, no. 1245 (2017): 1648–82. http://dx.doi.org/10.1017/aer.2017.105.

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ABSTRACTThis article presents a structural analysis of the Unmanned Aerial System UAS-S4 ETHECATL. Mass, centre of gravity position and principal mass moment of inertia are numerically determined and further experimentally verified using the ‘pendulum method’. The numerical estimations are computed through Raymer and DATCOM statistical-empirical methods coupled with mechanical calculations. The mass of the UAS-S4 parts are estimated according to their sizes and the UAS-S4 class, by the means of Raymer statistical equations. The UAS-S4 is also decomposed in several simple geometrical figures wh

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21

Wang, Qing Ming, and Jia Chen Ju. "Analysis of the Effect of External Factors to the Propulsion by Inertial Centrifugal Force of Rotating Mechanism." Applied Mechanics and Materials 487 (January 2014): 343–47. http://dx.doi.org/10.4028/www.scientific.net/amm.487.343.

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The idea of inertial propulsion using rotating parts is always attractive, but great controversy also exists. Some researchers even completely negate this idea in principle, they think it would never be possible to create directional movement by the inertial force. Theory and experimental results show that, in certain conditions, directional movement can be realized by the internal inertia force of the device. In this paper, the influence of the friction condition between the propulsion devices which using rotating eccentric mass to generate inertia force and the external supporting surface on

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22

Atchonouglo, K., and K. Nwuitcha. "MATRIX STUDY OF THE EQUATION OF SOLID RIGID MOTIONS." Advances in Mathematics: Scientific Journal 10, no. 9 (2021): 3195–207. http://dx.doi.org/10.37418/amsj.10.9.9.

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In this article, we described the equations of motion of a rigid solid by a matrix formulation. The matrices contained in our movement description are homogeneous to the same unit. Inertial characteristics are met in a 4x4 positive definite symmetric matrix called "tensor generalized Poinsot." This matrix consists of 3x3 positive definite symmetric matrix called "inertia tensor Poinsot", the coordinates of the center of mass multiplied by the total body mass and the total mass of the rigid body. The equations of motion are formulated as a gender skew 4x4 matrices. They summarize the "principle

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23

Yuan, Rui, Yu Sun, Wen Hai Fan, Kai Wu, and Zheng Jun Chen. "Research on Balancing Method for Inertia Force of Slider-Crank Mechanism with Small Linkage Ratio." Advanced Materials Research 591-593 (November 2012): 2011–15. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.2011.

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In view of the difficult balance of inertia force for the slider-crank mechanism, on the basis of analyzing inertia force of the slider-crank mechanism, a new balancing method of inertia force was proposed for the slider-crank mechanism with small linkage ratio, the rotary mass and the moving mass had replaced the mechanism mass, the inertia force of rotary mass was balanced by rotary weight counterbalance, a spring was disposed by slider, it provided variable elastic force and balanced the inertia force of moving mass. Then the balancing method was analyzed deeply and the theoretical derivati

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24

Craifaleanu, Andrei, and Nicolaie Orăşanu. "Reduction of Arbitrary Rigid Bodies to Inertially Equivalent Discrete Systems of Material Points." Applied Mechanics and Materials 762 (May 2015): 33–40. http://dx.doi.org/10.4028/www.scientific.net/amm.762.33.

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In a previous paper of the authors, a general method was presented for the reduction of a rigid plane plate to a discrete system of material points, with equivalent inertial properties (mass, center of mass, tensor of inertia). The present paper generalizes the method for rigid bodies of arbitrary shape, i.e. for material volumes, as well as for curved shells. It is shown that a homogenous ellipsoid can be reduced to a system of seven material points placed in significant geometrical points of the body. Next, starting from the concept of ellipsoid of inertia, an equivalent homogenous ellipsoid

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KUPRIKOV, Mikhail Yu, Lev N. RABINSKIY, and Nikita M. KUPRIKOV. "Moment-inertial representation of the Square-cube law in aircraft industry." INCAS BULLETIN 11, S (2019): 163–64. http://dx.doi.org/10.13111/2066-8201.2019.11.s.16.

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Flight distance depends on the dimension of the aircraft, but the designers stand against an insurmountable barrier caused by the dimension of the aircraft. In the process of analysis, alternative variants of the moment-inertial layout of fuel, engines, and commercial loads and their influence on the aircraft mass change are considered. A comparative analysis of the characteristics of the moment-inertial layouts of the main aircraft of the normal aerodynamic configuration and the aircraft made according to the flying wing scheme obtained as a result of a numerical experiment showed a clear adv

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26

GUŢULEAC, Leonid. "Formation of the concepts of moments of inertia of mechanical systems within the framework of theoretical mechanics." Acta et commentationes: Științe ale Educației 34, no. 4 (2023): 22–32. http://dx.doi.org/10.36120/2587-3636.v34i4.22-32.

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Mechanics is the first branch of physics studied in university education. In this branch, a series of concepts and notions are formed, which are subsequently used in other branches. A good understanding of mechanics can enable students to better grasp other chapters of physics. Among the fundamental concepts of physics is the inertia of a body. The measure of the inertia of a body in its translational motion is the inertial mass. This physical quantity is encountered quite often. Much less frequently used are the notions of moments of inertia, which describe the inertia of a body in rotational

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27

Li, Shi Wu, Jing Jing Tian, Zhi Fa Yang, Hai Zheng Wang, and Lin Hong Wang. "Design and Test Analysis of Precise and Fractionized Inertia System of Tire Drum Test-Bed." Advanced Materials Research 199-200 (February 2011): 137–42. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.137.

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To analyze the relationship of brake performances and its influence factors, a kind of tire drum test-bed was designed. The gradation principle of flywheels was proposed based on the double multiplication method and an inertial system with eight steps of flywheels was put forward. The inertia-mass of tire load ranging 400 from 5000 kilograms was divided into 256 levels with the accuracy of ±10 kilograms. The dynamics simulation model was built using SOLIDWORKS and ADAMS. The program of acceleration and brake testing were schemed. The feasibility and accuracy of design methodology of test-bed i

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28

ENNOS, A. ROLAND. "The Inertial Cause of Wing Rotation in Diptera." Journal of Experimental Biology 140, no. 1 (1988): 161–69. http://dx.doi.org/10.1242/jeb.140.1.161.

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The cause of the changes in wing pitch at stroke reversal in Diptera has been investigated. The high compliance of the wing base makes it seem unlikely that pitch changes are caused by active torsion at the wing articulation. The centre of mass of insect wings tends to be behind the centre of torsion of the wing, and it is proposed that wing inertia about the torsional axis alone is responsible for pitch changes as the wing is accelerated at stroke reversal. A simplified inertial model is developed to calculate the angular velocity about the torsional axis that would be caused by wing inertia.

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29

He, Guang Lin, and He Fei Tian. "Analysis of Dynamic Behavior of Zigzag Groove Setback Arming Device with Two Degree of Freedom." Advanced Materials Research 317-319 (August 2011): 1739–44. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.1739.

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Focusing on the requirements of safety and reliability of fuze setback arming device of rocket-assisted projectile, a zigzag groove setback device with two degree of freedom was designed with Inventor 6. The dynamic simulation is developed under environment of VisualNastran. The optimum parameters of up inertia-cylinder mass, down inertia-cylinder mass, up inertia-spring rigidity and down inertia-spring rigidity were tested by orthogonal method and simulated. The results indicate that this setback device can effectively differentiate setback overload in launch and impact overload at service ha

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30

Nguyen, G. H. Philipp, René Wittmann, and Hartmut Löwen. "Active Ornstein–Uhlenbeck model for self-propelled particles with inertia." Journal of Physics: Condensed Matter 34, no. 3 (2021): 035101. http://dx.doi.org/10.1088/1361-648x/ac2c3f.

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Abstract Self-propelled particles, which convert energy into mechanical motion, exhibit inertia if they have a macroscopic size or move inside a gaseous medium, in contrast to micron-sized overdamped particles immersed in a viscous fluid. Here we study an extension of the active Ornstein–Uhlenbeck model, in which self-propulsion is described by colored noise, to access these inertial effects. We summarize and discuss analytical solutions of the particle’s mean-squared displacement and velocity autocorrelation function for several settings ranging from a free particle to various external influe

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31

Bova, Matteo, Matteo Massaro, and Nicola Petrone. "A Three-Dimensional Parametric Biomechanical Rider Model for Multibody Applications." Applied Sciences 10, no. 13 (2020): 4509. http://dx.doi.org/10.3390/app10134509.

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Bicycles and motorcycles are characterized by large rider-to-vehicle mass ratios, thus making estimation of the rider’s inertia especially relevant. The total inertia can be derived from the body segment inertial properties (BSIP) which, in turn, can be obtained from the prediction/regression formulas available in the literature. Therefore, a parametric multibody three-dimensional rider model is devised, where the four most-used BSIP formulas (herein named Dempster, Reynolds-NASA, Zatsiorsky–DeLeva, and McConville–Young–Dumas, after their authors) are implemented. After an experimental compari

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Wang, Ying, Jasper Verheul, Sang-Hoon Yeo, Nima Khademi Kalantari, and Shinjiro Sueda. "Differentiable Simulation of Inertial Musculotendons." ACM Transactions on Graphics 41, no. 6 (2022): 1–11. http://dx.doi.org/10.1145/3550454.3555490.

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We propose a simple and practical approach for incorporating the effects of muscle inertia, which has been ignored by previous musculoskeletal simulators in both graphics and biomechanics. We approximate the inertia of the muscle by assuming that muscle mass is distributed along the centerline of the muscle. We express the motion of the musculotendons in terms of the motion of the skeletal joints using a chain of Jacobians, so that at the top level, only the reduced degrees of freedom of the skeleton are used to completely drive both bones and musculotendons. Our approach can handle all common

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Wicke, Jason, and Genevieve A. Dumas. "Estimating Segment Inertial Parameters Using Fan-Beam DXA." Journal of Applied Biomechanics 24, no. 2 (2008): 180–84. http://dx.doi.org/10.1123/jab.24.2.180.

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Body segment inertial parameters are required as input parameters when the kinetics of human motion is to be analyzed. However, owing to interindividual differences in body composition, noninvasive inertial estimates are problematic. Dual-energy x-ray absorptiometry (DXA) is a relatively new imaging approach that can provide cost- and time-effective means for estimating these parameters with minimal exposure to radiation. With the introduction of a new generation of DXA machines, utilizing a fan-beam configuration, this study examined their accuracy as well as a new interpolative data-reductio

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34

Ross, Stephanie A., and James M. Wakeling. "Muscle shortening velocity depends on tissue inertia and level of activation during submaximal contractions." Biology Letters 12, no. 6 (2016): 20151041. http://dx.doi.org/10.1098/rsbl.2015.1041.

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In order to perform external work, muscles must do additional internal work to deform their tissue, and in particular, to overcome the inertia due to their internal mass. However, the contribution of the internal mass within a muscle to the mechanical output of that muscle has only rarely been studied. Here, we use a dynamic, multi-element Hill-type muscle model to examine the effects of the inertial mass within muscle on its contractile performance. We find that the maximum strain-rate of muscle is slower for lower activations and larger muscle sizes. As muscle size increases, the ability of

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35

Lončar, Josip, Bojan Igrec, and Dubravko Babić. "Negative-Inertia Converters: Devices Manifesting Negative Mass and Negative Moment of Inertia." Symmetry 14, no. 3 (2022): 529. http://dx.doi.org/10.3390/sym14030529.

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Negative inertia is an unusual and counter-intuitive property of matter, extensively investigated in some of the most exotic branches of physics and engineering at both macroscopic and microscopic levels. Such an exotic property promises a wide range of applications, from Alcubierre drive to acoustic wave manipulation. Here, a novel approach to the realization of negative inertia and the concept of negative-inertia converters are introduced for both translational and rotational motion. The proposed devices, capable of exhibiting negative mass and negative moment of inertia, base their operatio

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36

Herrmann, F., M. Pohlig, and Chen Minhua. "Is Mass a Measure of Inertia?" Advance in Modern Physics 5, no. 4 (2023): 1–8. http://dx.doi.org/10.35534/amp.0504001.

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37

Etkin, V. "IS MASS A MEASURE OF INERTIA?" SCIENTIFIC-DISCUSSION, no. 70 (November 9, 2022): 3–11. https://doi.org/10.5281/zenodo.7306696.

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On the basis of the energodynamic principle of state determinism, it is shown that the measure of the inertial properties of a substance is not its mass, but its momentum, and the accepted form of the laws of Newtonian mechanics needs to be clarified and generalized. The immediate consequences of this circumstance are revealed, which consist in the need to take into account in the fundamental theories of energy the oscillatory motion of matter and the irreversibility of the acceleration process, which requires the introduction of the concept of efficiency of this process. The inconsistency of

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He, Li Zhao, Peng Yu, Tong Zhang, and Rong Guo. "Inertia Parameters Identification of Motor Assembly for Electric Vehicles Based on Modal Test Method." Applied Mechanics and Materials 470 (December 2013): 534–38. http://dx.doi.org/10.4028/www.scientific.net/amm.470.534.

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Inertia parameters are essential for motor assembly mounting design, which mainly includes the mass, center of mass (CM) coordinates, moment of inertia and product of inertia. This paper explains the principle and methods of modal test method. One vehicle drive motor assembly is taken as the research object, its inertia parameters are identified using this modal test method. Finally test error analysis is also performed.

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Shadley, J. R., B. L. Wilson, and M. S. Dorney. "Unstable Self-Excitation of Torsional Vibration in AC Induction Motor Driven Rotational Systems." Journal of Vibration and Acoustics 114, no. 2 (1992): 226–31. http://dx.doi.org/10.1115/1.2930252.

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The most common NEMA Design Classes of AC induction motors have speed-torque characteristics that can give rise to unstable self-excitation of torsional vibration in rotational systems during start-up. A torsional vibration computational model for start-up transients has been developed as a design tool for induction motor applications. Torsional instability can occur at speeds in the positive sloping segment of the motor’s speed-torque curve and is particularly acute when the mass moment of inertia of the load device is more than two times the mass moment of inertia of the motor rotor. The com

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Newberry, Sterling. "Is It Possible to Produce Micro-Gravity in Our Own Lab?" Microscopy Today 3, no. 9 (1995): 8–9. http://dx.doi.org/10.1017/s1551929500065779.

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Wouldn't it be nice to have some kind of laboratory hood in which gravity is greatly reduced so we could grow more perfect crystals or do biological experiments without having to go into orbit. There was a report in Science last year which hinted that gravity cancellation or modification just might be possible some day, but I doubt that any of our readers noticed it. The title was “Inertia: Does Empty Space Put Up the Resistance?”. One has to read this news report carefully to find that physicists have long pondered the connection between the inertial property of mass and the gravitational att

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Fridley, J. L., and R. A. Tufts. "Analytical Estimates of Loblolly Pine Tree Center of Mass and Mass Moment of Inertia." Forest Science 35, no. 1 (1989): 126–36. http://dx.doi.org/10.1093/forestscience/35.1.126.

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Abstract Center of mass and mass moment of inertia of a solid can be calculated by appropriate integration over the volume of the object. Taper functions estimate tree stem diameter as a function of stem height and dbh. Center of mass and mass moment of inertia about two axes were estimated for 21 loblolly pine (Pinus taeda) trees using nine different taper functions to estimate the volume of integration. Laboratory measurements (from a previous study) of the same 21 trees served as a basis for evaluating and comparing the estimates. The center of mass values determined via the taper equations

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McLeland, Lucas, Brian Erickson, Brendan Ruchlin, et al. "Center of Mass Auto-Location in Space." Technologies 13, no. 6 (2025): 246. https://doi.org/10.3390/technologies13060246.

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Maintaining a spacecraft’s center of mass at the origin of a body-fixed coordinate system is often key to precision trajectory tracking. Typically, the inertia matrix is estimated and verified with preliminary ground testing. This article presents groundbreaking preliminary results and significant findings from on-orbit space experiments validating recently proposed methods as part of a larger study over multiple years. Time-varying estimates of inertia moments and products are used to reveal time-varying estimates of the location of spacecraft center of mass using geosynchronous orbiting test

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Previati, Giorgio, Gianpiero Mastinu, and Massimiliano Gobbi. "Mass, Centre of Gravity Location and Inertia Tensor of Electric Vehicles: Measured Data for Accurate Accident Reconstruction." World Electric Vehicle Journal 15, no. 6 (2024): 266. http://dx.doi.org/10.3390/wevj15060266.

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Accurate accident reconstruction requires the knowledge of the mass properties of vehicles, namely the centre of gravity location, the mass and the inertia tensor. Such data are seldom available, especially in case of newly produced electric vehicles. In this paper, vehicle inertia measurements, performed at Politecnico di Milano, refer to a number of electric vehicles. In addition to the “simple” measurement of vehicle inertia, measured mass properties are analysed to derive the proper empirical formulae for the estimation of the centre of gravity height and the moments of inertia. Both inter

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Fazeli, Nima, Roman Kolbert, Russ Tedrake, and Alberto Rodriguez. "Parameter and contact force estimation of planar rigid-bodies undergoing frictional contact." International Journal of Robotics Research 36, no. 13-14 (2017): 1437–54. http://dx.doi.org/10.1177/0278364917698749.

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This paper addresses the identification of the inertial parameters and the contact forces associated with objects making and breaking frictional contact with the environment. Our goal is to explore under what conditions, and to what degree, the observation of physical interaction, in the form of motions and/or applied external forces, is indicative of the underlying dynamics that governs it. In this study we consider the cases of passive interaction, where an object free-falls under gravity, and active interaction, where known external perturbations act on an object at contact. We assume that

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Kaushik, Keshav, Guru Deep Singh, and P. K. Jain. "Design and Development of Inertia Dynamometer for FSAE Application." International Journal of Advance Research and Innovation 7, no. 2 (2019): 125–28. http://dx.doi.org/10.51976/ijari.721919.

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This paper discusses the development process of a reliable and cost-effective inertia dynamometer for FSAE application.The testing procedure is to accelerate an inertial mass (flywheel) from rest to its maximum speedand calculate the engine power versus speed using the inertia of the flywheel and its rate of change of angular speed. The dimensions of the inertial load, bearings, shaft and foundation have been selected based on theoretical calculations and structural analysis. A Hall- effect sensor has been used to measure instantaneous speed during test. This data is logged through Arduino-Uno

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SULTANA, JOSEPH, and DEMOSTHENES KAZANAS. "THE PROBLEM OF INERTIA IN FRIEDMANN UNIVERSES." International Journal of Modern Physics D 20, no. 07 (2011): 1205–14. http://dx.doi.org/10.1142/s0218271811019384.

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In this paper we study the origin of inertia in a curved spacetime, particularly the spatially flat, open and closed Friedmann universes. This is done using Sciama's law of inertial induction, which is based on Mach's principle, and expresses the analogy between the retarded far fields of electrodynamics and those of gravitation. After obtaining covariant expressions for electromagnetic fields due to an accelerating point charge in Friedmann models, we adopt Sciama's law to obtain the inertial force on an accelerating mass m by integrating over the contributions from all the matter in the univ

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Liu, Liangkun, Ping Tan, Haitao Ma, Weiming Yan, and Fulin Zhou. "A novel energy dissipation outrigger system with rotational inertia damper." Advances in Structural Engineering 21, no. 12 (2018): 1865–78. http://dx.doi.org/10.1177/1369433218758475.

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Rotational inertia damper, a novel damper, possessing the advantage of displacement amplification, has been employed in outrigger system for seismic mitigation. The equivalent analysis model composed by a uniform cantilever beam and an equivalent spring was proposed to simulate the rotational inertia damper outrigger system, by which the corresponding dynamic characteristic equation was derived based on numerical assembly technique. To gain the response of the damped system, finite element method and state space method have been utilized. Finally, the results show that the pseudo-undamped natu

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Youcef-Toumi, Kamal, and Haruhiko Asada. "The Design of Open-Loop Manipulator Arms With Decoupled and Configuration-Invariant Inertia Tensors." Journal of Dynamic Systems, Measurement, and Control 109, no. 3 (1987): 268–75. http://dx.doi.org/10.1115/1.3143854.

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A manipulator design theory for reduced dynamic complexity is presented. The kinematic structure and mass distribution of a manipulator arm are designed so that the inertia matrix in the equation of motion becomes diagonal and/or invariant for an arbitrary arm configuration. For the decoupled and invariant inertia matrix, the system can be treated as a linear, single-input, single-output system with constant parameters. Consequently, control of the manipulator arm is simplified, and more importantly, the reduced dynamic complexity permits improved control performance. First, the problem of des

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Hasan, M., and DMS Zaman. "Linear Nuclear Acoustic Waves in Degenerate Quantum Plasma." GUB Journal of Science and Engineering 5, no. 1 (2018): 20–23. http://dx.doi.org/10.3329/gubjse.v5i1.47896.

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A rigorous theoretical investigation has been made on the linear propagation of electrostatic perturbation modes of degenerate pressure driven modified nucleus-acoustic (DPDMNA) ‘waves in a degenerate quantum plasma (DQP) system. It contains cold inertia-less degenerate electron species (DES), cold inertial non-degenerate light nucleus species (LNS) and stationary heavy nucleus species (HNS) which maintains the quasi-neutrality condition at equilibrium only. The mass density of the cold LNS provides the inertia and the cold inertia-less cold LNS provides the inertia and the cold inertia-less D

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Wang, J., and M. F. Hsieh. "Vehicle yaw-inertia- and mass-independent adaptive steering control." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 223, no. 9 (2009): 1101–8. http://dx.doi.org/10.1243/09544070jauto1135.

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This paper describes a vehicle stability control (VSC) system using a vehicle yaw-inertia- and mass-independent adaptive control law. As a primary vehicle active control system, VSC can significantly improve vehicle driving safety for passenger cars and enhance trajectory tracking accuracy for other applications such as autonomous, surveillance, and mobile robot vehicles. For the designs of vehicle dynamic control systems, vehicle yaw inertia and mass are two of the most important parameters. However, in practical applications, vehicle yaw inertia and mass often change with vehicle payload and

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