Academic literature on the topic 'Effective Moment of Inertia'

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Journal articles on the topic "Effective Moment of Inertia"

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Barci, V., H. El-Samman, A. Gizon, J. Gizon, R. Kossakowski, B. M. Nyako, T. Vertse, et al. "Effective moment of inertia in132Ce,134Nd and136Nd." Zeitschrift f�r Physik A Atomic Nuclei 325, no. 4 (December 1986): 399–404. http://dx.doi.org/10.1007/bf01290041.

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Faller, Ronald K., and Barry T. Rosson. "Effective moment of inertia for rectangular elastoplastic beams." Structural Engineering and Mechanics 7, no. 1 (January 25, 1999): 95–110. http://dx.doi.org/10.12989/sem.1999.7.1.095.

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AL-ZAID, RAJEH. "Effective Moment of Inertia of Partially Cracked RC Beams." Journal of King Abdulaziz University-Engineering Sciences 9, no. 1 (1997): 125–39. http://dx.doi.org/10.4197/eng.9-1.8.

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El-Samman, H., V. Barci, A. Gizon, J. Gizon, R. Kossakowski, Th Lindblad, and T. Bengtsson. "Effective dynamic moment of inertia of 118Xe and 130Ba." Physics Letters B 158, no. 6 (September 1985): 459–62. http://dx.doi.org/10.1016/0370-2693(85)90794-4.

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Jerrestam, Dan, V. Barci, S. Elfström, H. El-Samman, J. Gizon, W. Klamra, Th Lindblad, and C. G. Lindén. "The Effective Moment of Inertia in 130Ce and 129La." Physica Scripta 31, no. 5 (May 1, 1985): 317–20. http://dx.doi.org/10.1088/0031-8949/31/5/004.

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Gohnert, M., and P. Y. Xue. "A theoretical refinement of Branson's effective-moment-of-inertia equation." Magazine of Concrete Research 52, no. 1 (February 2000): 39–42. http://dx.doi.org/10.1680/macr.2000.52.1.39.

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Patel, K. A., A. Bhardwaj, S. Chaudhary, and A. K. Nagpal. "Explicit expression for effective moment of inertia of RC beams." Latin American Journal of Solids and Structures 12, no. 3 (March 2015): 542–60. http://dx.doi.org/10.1590/1679-78251272.

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Eya, I. O., J. O. Urama, and A. E. Chukwude. "ENTRAINMENT FACTOR OF INDIVIDUAL GLITCH FRACTIONAL MOMENT OF INERTIA." Revista Mexicana de Astronomía y Astrofísica 55, no. 1 (May 31, 2019): 3–9. http://dx.doi.org/10.22201/ia.01851101p.2019.55.01.01.

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The superfluid in the inner crust of a neutron star is assumed to be the reservoir of momentum released in a pulsar glitch. Recently, due to crustal entrainment, it appears debatable whether the magnitude of the inner crust is sufficient to contain the superfluid responsible for large glitches. This paper calculates the fractional moment of inertia (FMI)(i.e. the ratio of the inner crust superfluid moment of inertia to that of the coupled components) associated with individual glitches. It is shown that the effective moment of inertia associated with the transferred momentum is that of the entrained neutrons. The FMI for glitches in three pulsars, which exhibit the signature of exhausting their momentum reservoir, were calculated and scaled with the entrainment factor. Some of the glitches require an inner crust superfluid with moment of inertia larger than the current suggested values of 7-10% of the stellar moment of inertia.
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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 (May 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-reduction process for estimating inertial parameters. Specifically, the inertial estimates of two objects (an ultra-high molecular density plastic rod and an animal specimen) and 50 participants were obtained. Results showed that the fan-beam DXA, along with the new interpolative data-reduction process, provided highly accurate estimates (0.10–0.39%). A greater variance was observed in the center of mass location and moment of inertia estimates, likely as a result of the course end-point location (1.31 cm). However, using a midpoint interpolation of the end-point locations, errors in the estimates were greatly reduced for the center of mass location (0.64–0.92%) and moments of inertia (–0.23 to –0.48%).
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Senjanovic, Ivo, and Ying Fan. "Investigation of Effective Bending and Shear Stiffness of Thin-Walled Girders Related to Ship Hull Vibration Analysis." Journal of Ship Research 33, no. 04 (December 1, 1989): 298–309. http://dx.doi.org/10.5957/jsr.1989.33.4.298.

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Application of beam theory in flexural vibration analysis of thin-walled girders is extended for the high-frequency domain by introducing the concept of effective values of beam parameters, that is, cross-sectional moment of inertia, shear area, mass, and mass moment of inertia. Formulation of these parameters is based on equivalence of deformation energy and inertia work, respectively, for a considered structure and its beam model, resulting in the same values of their natural frequencies. For illustration, the natural vertical vibration of a simply supported pontoon has been considered, where it was possible to obtain the analytical solution due to sinusoidal mode shapes. The effective values of cross-sectional moment of inertia and shear area show significant variation in frequency domain. Transfer of effective values of beam parameters, determined for simply supported structure, in the case of other boundary conditions is suggested, based on equal mode wavelengths, and checked for the free pontoon. The results show very low discrepancies compared with a three-dimensional finite-element model solution, so this procedure may be applied generally, as well as to the problem of ship hull vibration. In conclusion, the possibility of calculating the values of effective parameters for multicell ship cross sections, utilizing the theory of folded structure and the finite-element method, is pointed out.
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Dissertations / Theses on the topic "Effective Moment of Inertia"

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Warmoth, Francis James. "Floor Vibrations: Girder Effective Moment of Inertia and Cost Study." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/41005.

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Studies on the effective moment of inertia of girders that support concrete slabs using joist seats as the horizontal shear connections, and a cost efficiency analysis comparing composite and non-composite floor systems that meet vibrations design standards, were conducted. The first study was undertaken because over-prediction of girder effective moment of inertia was the suspected cause of several recent vibration problems in floors supported by widely spaced LH-series joists. Eight purpose-built floors of the type in question were subjected to experimental tests of girder effective moment of inertia and girder frequency. Frequencies were tested for two live loading cases. Three separate test configurations were made with each floor by changing the seat-to-girder connections between bolted, welded, and reinforced. In the study, 1) the accuracy of the current design practice is assessed, 2) a new relationship was proposed, and 3) suggestions for finite element modeling are made. In recent years, composite construction has been used to improve cost efficiency by reducing structural weight and in some cases by reducing story height. However, vibration problems are a design consideration in composite floors because lighter floors tend to be more lively. It is not clear if cost savings can be made with composite construction if vibrations are considered in the design. To compare the cost of composite and non-composite floors that satisfy AISC/CISC Design Guide criterion for walking excitation, four typical size bays were analyzed using commercial design software that finds the least expensive member configuration for a given bay size. All acceptable bay configurations of member sizes and spacing were evaluated for least non-composite and composite costs, then these results were compared. The findings show that composite construction can be more economical when initial dead load deflections do not control the design.
Master of Science
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Wickline, Joseph Edward. "A Study Of Effective Moment of Inertia Models for Full-Scale Reinforced Concrete T-Beams Subjected to a Tandem-Axle Load Configuration." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/35754.

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This thesis is a product of the U.S. Army Corp of Engineer's desire to develop a more accurate procedure for estimating the load capacity of an in-service T-beam bridge. A bridge type that is a stumbling block for U.S. Army field engineers due to the unknown amount and placement of the flexural reinforcement in the T-beam girder cross-sections. Personnel from the U.S. Army Corp of Engineer's Waterways Experiment Station in cooperation with personnel from Virginia Tech conceived a procedure that is potentially more accurate, can be quickly executed in the field, and is relatively easy to use by field engineers. In general, the procedure provides a method for transition between the quantity of flexural reinforcement in a reinforced concrete T-beam and the member's actual moment of inertia. Specifically, the goal of this thesis is to evaluate the accuracy of selected, effective moment of inertia models as a component in the proposed analysis procedure. The accuracy of the selected models is evaluated with test data generated from a testing program detailed herein, which load tested full-scale reinforced concrete T-beams. The test specimens were subjected to a closely-spaced, tandem-axle load configuration, a load configuration typical of military equipment.
Master of Science
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Banibayat, Pouya. "Experimental Investigation of the Mechanical and Creep Rupture Properties of Basalt Fiber Reinforced Polymer (BFRP) Bars." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1323229543.

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Alvarez, Guevara Kervin Alexander, and Chumpitaz Marco Fabricio Medina. "Análisis de la influencia de las secciones agrietadas en la respuesta a una solicitud sísmica en edificios regulares e irregulares multifamiliares de 5, 10 y 15 pisos en la ciudad de Lima." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653473.

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Esta investigación aborda la real influencia que tiene el agrietamiento de los elementos estructurales en la reducción de rigidez cuando se produce un evento sísmico. Para ello, en primer lugar, describió la realidad problemática, los antecedentes y generalidades previos acerca del tema para determinar qué tipo de edificación utilizar. En segundo lugar, el marco teórico expuso un conjunto de conceptos fundamentales necesarios para entender el agrietamiento del concreto, la obtención de la inercia efectiva, la irregularidad de edificaciones y se dio un repaso sobre las consideraciones de normas extranjeras. En tercer lugar, se determinó trabajar con 6 planos de viviendas multifamiliares, de los cuales 3 fueron estructuras regulares y 3 fueron irregulares. Asimismo, se subdividió las estructuras en alturas de 5, 10 y 15 pisos, ya que son el tipo de edificación que más se construyen en Lima. Después se halló los parámetros geográficos, de uso y geométricos a partir de la Norma E-030, para luego realizar el análisis sísmico lineal (estático y dinámico). Luego, se realizó los diagramas de momento – curvatura (vigas, columnas y placas), para que, a partir de ellos, obtener un factor de reducción de la inercia bruta y realizar un nuevo análisis sísmico considerando este valor como efecto del agrietamiento. Finalmente, se realizó un análisis comparativo entre los resultados obtenidos de acuerdo a la altura en edificaciones regulares e irregulares.
This research addresses the real influence of the cracking of structural elements in the reduction of rigidity when a seismic event occurs. To do this, first, he described the problematic reality, the background and previous generalities about the topic to determine what type of building to use. Secondly, the theoretical framework exposed a set of fundamental concepts necessary to understand the cracking of concrete, the obtaining of effective inertia, the irregularity of buildings and a review of the considerations of foreign standards. In the third place, it was determined to work with 6 multifamily housing plans, of which 3 were regular structures and 3 were irregular. Likewise, the structures were subdivided into heights of 5, 10 and 15 floors, since they are the type of building that is most constructed in Lima. Afterwards, the geographic, use and geometrical parameters were found from the E-030 standard, to then perform the linear seismic analysis (static and dynamic). Then, the moment diagrams - curvature (beams, columns and plates) were made, so that from them, obtain a reduction factor of the gross inertia and perform a new seismic analysis considering this value as an effect of cracking. Finally, a comparative analysis was made between the results obtained according to the height in regular and irregular buildings.
Tesis
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Samsvik, Jonas, and Adam Norén. "Framtagning av spännviddstabell för ribbdäcksbjälklag." Thesis, Högskolan Dalarna, Byggteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:du-30449.

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Examensarbetets syfte är att finna en beräkningsgång för ribbdäcksbjälklag så att en spännviddstabell kan skapas. Ett ribbdäcksbjälklag består av stående limträbalkar med en liggande KL-träskiva ovan som fungerar som golv. I detta examenarbete är KL-träskivan 2,4 meter bred och vilar på två limträbalkar. Full samverkan mellan de olika materialen råder. Idag finns det några aktörer på marknaden som levererar liknande typer av bjälklag men det finns ingen beräkningsgång preciserad i Eurokod. Förstudien till examensarbetet har visat på att tillvägagångssättet för att lösa den mest problematiska beräkningen har varit densamma för de företagen vi har kollat på. Svårigheten är att beräkna den effektiva bredden för tvärsnittet. Det finns även olika standarder som gäller för hur stor nedböjningen får vara för ett bjälklag. I examensarbetet utförs beräkningar för att uppfylla de krav som gäller i Sverige samt de krav som gäller i Österrike. Detta görs för att dalamissivträ misstänker att kraven på de österrikiska bjälklagen är högre ställda med avseende på svikt, de vill kunna erbjuda ett styvare bjälklag. I tabellen ska dimensioner anges för att respektive krav ska uppfyllas. De österrikiska kraven har visat sig vara hårdare ställda jämfört med de svenska och kommer därför att kräva en balk av större dimension i de lägre lastfallen. I fallen med större laster kommer balkdimensionerna mellan de olika lastfallen inte att skilja sig. Där har det visast sig att branddimensioneringen varit helt dimensionerande. Tabellen ska vara ett hjälpmedel för företaget Dala massivträ att lättare nå ut till beställare. Beräkningsgången har gjorts i Mathcad, där okända parametrar har lösts ut och beräknats fram. Vissa parametrar har varit fasta utifrån Dala massivträs önskemål, så som KL-träskivans tjocklek och ingående komponenters materialegenskaper. När beräkningarna har gjorts har de kontrollerats så att momentkapacitet och tvärkraftskapacitet är tillräcklig i respektive last fall och spännvidd. Nedböjningen har kontrollerats liksom branddimensioneringen. Har bjälklaget inte uppfyllt hållfastighetsdimensionering eller kraven för svenskstandard alternativt österrikiskstandard har en högre dimension valts på limträbalken. Limträbalk har valts utifrån Setra trävarors standardsortiment. Resultatet av beräkningarna har förts in i en spännviddstabell som byggts upp för att enkelt kunna välja balk utifrån tänkt last fall. Beräknings exempel finns redovisat i en bilaga där ett lastfall och en spännvidd redovisas. Resultatet leder till att varje spännvidd och lastfall får två dimensioner, en för att klara svensk standard och en för att klara österrikiskstandard. I diskussionen diskuteras eventuella felkällor, effekten av tätare placering med limträbalkar och orsaken till en differens i jämförelsen mellan Mathcad och Calculatis. Även resultatet i spännviddstabellen diskuteras.
The purpose of the degree project is to find a calculation path for ribbed deck joists so that a span width table can be created. A ribbed deck joists consists of standing glulam beams with a lying cross laminated timber slab above which functions as a floor. In this thesis, the cross laminated timber board is 2.4 meters wide and rests on two glulam beams. Full cooperation between the different materials prevails. Today, there are some players in the market that deliver these types of floor but there is no calculation rate specified in Eurocode. The preliminary study for the degree project has shown that the approach to solving the most problematic calculation has been the same for the companies we have looked at. The difficulty is to calculate the effective width of the cross section. There are also different standards that apply to how large the deflection may be for a beam. In the thesis work, calculations are performed to meet the requirements that apply in Sweden and the requirements that apply in Austria. Dimensions must be specified in the table for fulfilling the respective requirements. The Austrian requirements have proved to be harder compared to the Swedish ones and will therefore require a beam of greater dimension in the lower load cases. In case with the larger loads, the beam dimensions between the different loads will not differ because it has been shown that the fire has been dimensional. The table should be a tool for the company Dala massivträ to reach the customer more easily. The calculation path has been made in Mathcad, where unknown parameters has been solved and calculated. Some parameters have been fixed based on Dala massivträ´s wishes, such as the thickness of the cross laminated timber board and the material properties of the component parts. Once the calculations have been made, they have been checked so that torque capacity and transverse power capacity are sufficient in the respective load cases and span. The deflection has been checked as well as the fire dimensioning. The flooring has not fulfilled the dimensioning or the requirements for Swedish standard alt. Austrian standard has a higher dimension selected on the glulam beam. Glulam beam has been selected based on Setra's wood products standard range. The result of the calculations has been entered into a span table which has been built up in order to be able to easily select the beam from outside the intended load case. The calculation example is presented in an annex where a load case and a span are reported. The result is that each span and load fall get two dimensions, one to meet the Swedish standard and one to cope with the Austrian standard. In the discussion, is discussed possible sources of error, the effect of denser placement with glulam beams and the cause of a difference in the comparison between Mathcad and Calculatis. The result in the span table is also discussed.
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Koh, Meng hock. "Fission-barriers and energy spectra of odd-mass actinide nuclei in self-consistent mean-field calculations." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0208/document.

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Alors qu’il existe de nombreux calculs microscopiques de barrières de fission pour des noyaux composés pair-pairs, il n’y a cependant que relativement peu de tels calculs pour des noyaux de masse impaire. Ceci est dû aux complications induites par la brisure de la symétric de reversement du sens du temps au niveau du champ moyen qui est engendrée par la présence d’un nucleon non apparié. Pour éviter cette difficulté, des calculs existants pour des noyaux de masse impaire ont tout simplement négligé ces effets de brisure de la symétrie de reversement du sens du temps.Dans ce travail, on se donne pour but d’améliorer la description des barrières de fission, aussi bien que des propriétés spectroscopiques du niveau fondamental et de l’état isomérique de fission,pour quelques isotopes de masse impaire dans la région des actinides en prenant en compte de tels effets. Ceci a été réalisé dans le cadre du formalisme de Skyrme–Hartree–Fock plus BCS avec blocking en adaptant ce formalisme à la brisure de la symétrie considérée. L’interaction résiduelle d’appariement a été approchée par une force de séniorité dont les paramètres ont été ajustés pour reproduire les différences de masse pair-impair de quelques noyaux de la région des actinides.Les énergies des têtes de bande rotationnelle de basse énergie ont été calculées dans le cadre du modèle unifié de Bohr-Mottelson pour quatre noyaux bien déformés (235U, 239Pu, 237Np, 241Am)produisant un bon accord qualitatif avec les données pour les noyaux impairs en neutrons. L’accord significativement moins bon obtenu pour les noyaux impairs en protons pourrait résulter de l’usage de l’approximation de Slater pour l’interaction d’échange de Coulomb. Les énergies de déformation de deux noyaux impairs en neutrons (235U, 239Pu) ont été calculées pour quelques configurations de particule individuelle, jusqu’après la barrières de fission externe. La symétrie axiale a été imposée tandis que la brisure de la symétrie droite-gauche (ou de parité intrinsèque) a été permise dans la région de la seconde barrière. Les hauteurs des barrières de fission pour ces noyaux impairs dépendent significativement des configurations de particule individuelle. Un accord qualitatif avec les données disponibles pour les hauteurs de barrières des noyaux impairs considérés et leurs voisins pair-pairs a été généralement obtenu
While there have been numerous microscopic calculations on fission barriers of even-even compoundnuclei, there are however, relatively few such work dedicated to odd-mass nuclei. This is dueto the complications posed by the breaking of the time-reversal symmetry at the mean-field leveldue to the presence of an unpaired nucleon. In order to circumvent this difficulty, previous fission barriercalculations of odd-mass nuclei have been performed by neglecting the effect of time-reversalsymmetry breaking. This work aims to improve on the description of fission barriers as well asthe spectroscopic properties of ground and fission-isomeric state, of some odd-mass actinide nucleiby taking the effect of time-reversal symmetry breaking into account. This has been perfomedwithin a Skyrme-Hartree-Fock-plus-BCS framework with blocking, where the BCS formalism hasbeen adapted to accomodate this symmetry breaking. The Skyrme nucleon-nucleon effective forcehas been used with various sets of parameters (SIII, SkM*, SLy5*). The residual pairing interactionhas been approximated by seniority forces whose neutron and proton parameters have beenfitted to reproduce the odd-even mass differences of some actinide nuclei. The low-lying rotationalband-head energies evaluated within the Bohr-Mottelson unified model have been determined forfour well-deformed odd-nuclei (235U, 239Pu, 237Np, 241Am) yielding a good qualitative agreementto the data for odd-neutron nuclei. The agreement was significantly less good for the odd-protonnuclei, possibly due to the use of the Slater approximation for the exchange Coulomb interaction.The deformation energies of two odd-neutron nuclei (235U and 239Pu) have been calculated forsome single-particle configurations up to a point beyond the outer fission-barrier. Axial symmetrynuclear shape has been assumed while a breaking of the left-right (or intrinsic parity) symmetryhas been allowed around the outer fission-barrier. The fission-barrier heights of such odd-neutronnuclei depend significantly on the particle configurations. A special attention has been paid tothe very important rotational correction to deformation energies. In particular, the correction ofthe moment of inertia calculated from the usual Belyaev expression was considered. Overall, aqualitative agreement with available data on fission-barrier heights for the considered odd-neutronnuclei and their even neighbours has been obtained
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Schorah, David J. "The effect of moment of inertia on the speed of swung implements." Thesis, Sheffield Hallam University, 2015. http://shura.shu.ac.uk/20803/.

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The maximum swing speed of an implement is an important performance parameter in many sports. It is understood that moment of inertia (MOI) has an effect upon the swing speed of an implement and numerous studies have found a similar rate of swing speed decay (n). These studies considered different movements which suggested that skill was less important than physique to the relationship between swing speed and MOI. The aim of this project was to quantify this relationship and to determine whether the physical characteristics of a participant can be used to predict their swing speed performance. A series of eight visually identical rods with varied MOI were swung in a heavily restricted, maximal motion and trials were recorded with a motion capture system. The results found that swing speed decreased as MOI increased. It was also found that if n was assumed to be constant, the maximum work done by a participant was strongly and significantly related to their swing speed. The relationship between work done and swing speed was used to create a model to predict swing speed for an implement with a specific MOI. This model was validated for a new set of participants performing the same restricted motion and all measured data fell within the confidence intervals of the predictions. The ecological validity of the model was tested in an analysis of the swing speed of tennis groundstrokes. An impact model was used to analyse the effect of changing MOI on ball speed. It was discovered that there is an optimum MOI that produces a maximum ball speed and that this optimum MOI is dependent upon n. This makes the customisation of equipment a realistic possibility. A simple method for measuring n in a non-laboratory environment is proposed that will enable the customisation process to take place.
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Pearce, Steven James. "Core-mantle interactions resulting from sudden changes in the Earth's moment of inertia." Diss., The University of Arizona, 1995. http://hdl.handle.net/10150/187267.

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The effect of sudden changes in the Earth's moment of inertia on the hydromagnetic state of the core is studied. Rapid changes in georotation, due to ice age transgression and regression, are described as varying boundary conditions in an axisymmetric Earth model containing both viscous and electromagnetic coupling. The deterministic equations describing the limit of rapid rotation are employed in conjunction with restricted 2-D predictive magneto-fluid equations. A kinematic description is devised for both buoyancy driven mass motions and the regeneration of the poloidal magnetic field. A pseudo-spectral method is used to solve the incompressible magneto-fluid equations. The variables are collocated in radius using Chebyshev polynomials and the pseudospectral evaluations in colatitude are done using associated Legendre polynomials. Time dependence and magnetic diffusion are controlled by a modified second order semi-implicit Runge Kutta scheme. Deterministic steady state solutions were found in full agreement with Hollerbach and Jones (1993a,b; 1995). Steady state boundary layers, arising from differential motion of the outer core boundaries, were found to induce significant departures for both α²- and αω-dynamo steady state configurations. The hydromagnetic communication time of the core, determined the predictive magneto-fluid equations, is found to be consistent with the deterministic calculations. 'Within the context of this model, it is concluded that a causal connection is plausible between geomagnetic transients and significant changes in the Earth's moment of inertia.
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Rücker, Jan. "Měření hmotnostních parametrů vozidel." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-232657.

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This thesis is the first part deals with methods of determining weight parameters of vehicles. By measuring the position of center of gravity and inertia measurements. In the second part focuses on the measurement of gravity position in a selected group of vehicles Škoda and their comparison between vehicles and comparison with simulation programs PCcrach and Virtual crach.
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Xu, Tongyi. "Design and Analysis of a Shock Absorber with a Variable Moment of Inertia Flywheel for Passive Vehicle Suspension." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/26293.

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Conventional vehicle suspensions consist of a spring and a damper, while mass is rarely used. A mass, if properly used, can also create a damping-like effect. However, a mass has only one terminal which makes it difficult to be incorporated into a suspension. In order to use a mass to achieve the damping-like effect, a two-terminal mass (TTM) has to be designed. However, most of the reported TTMs are of fixed moment of inertia (TTM-CMI), which limits the further improvement of the suspension performance and responsiveness to changes in environment and driving conditions. In this study, a TTM-based vibration absorber with variable moment of inertia (TTM-VMI) is proposed. The main component of the proposed TTM absorber contains a hydraulic-driven flywheel with sliders. The moment of inertia changes with the positions of the sliders in response to the driving conditions. The performance of the proposed TTM-VMI absorber has been analyzed via dynamics modeling and simulation and further examined by experiments. The analysis results indicate that the TTM-VMI absorber outperforms the TTM-CMI design in terms of body displacement; and ride comfort, tire grip and suspension deflection for zero and impulse inputs with comparable performance for sinusoidal input.
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Books on the topic "Effective Moment of Inertia"

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Adventures in physical education teacher preparation: Overcoming the inertia of institutionalized teacher selves. New York: Peter Lang, 2006.

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Mallick, Krishna. Environmental Movements of India. NL Amsterdam: Amsterdam University Press, 2021. http://dx.doi.org/10.5117/9789462984431.

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In her detailed retelling of three iconic movements in India, Professor Emerita Krishna Mallick, PhD, gives hope to grassroots activists working toward environmental justice. Each movement deals with a different crisis and affected population: Chipko, famed for tree-hugging women in the Himalayan forest; Narmada, for villagers displaced by a massive dam; and Navdanya, for hundreds of thousands of farmers whose livelihoods were lost to a compact made by the Indian government and neoliberal purveyors of genetically modified organisms (GMOs). Relentlessly researched, the book presents these movements in a framework that explores Hindu Vedic wisdom, as well as Development Ethics, Global Environment Ethics, Feminist Care Ethics, and the Capability Approach. At a moment when the climate threatens populations who live closest to nature--and depend upon its fodder for heat, its water for life, and its seeds for food--Mallick shows how nonviolent action can give poor people an effective voice.
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OF, PEAS MOMENT. Peas Moment of Inertia IBM Version Bu. John Wiley & Sons Inc, 1985.

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Paul, Lin, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Program., eds. Influence of mass moment of inertia on normal modes of preloaded solar array mast. [Washington, DC]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1992.

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The Moment of Truth: A Guide to Effective Sermon Delivery. B&H Publishing Group, 1999.

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Polarization and Moment Tensors: With Applications to Inverse Problems and Effective Medium Theory (Applied Mathematical Sciences). Springer, 2007.

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Osgood, Libby, Gayla Cameron, and Emma Christensen. Engineering Mechanics: Statics. University of Prince Edward Island, 2021. http://dx.doi.org/10.32393/engnmech.

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Introduction to engineering mechanics: statics, when acceleration is 0. Concepts include: particles and rigid body equilibrium equations, distributed loads, shear and moment diagrams, trusses, method of joints and sections, & inertia. This book is intended for those who love to learn.
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The Unguarded Moment: A Surgeon's Discovery of the Barriers to Prescription of Inexpensive, Effective Healthcare in the Form of Therapeutic Exercise. Vantage Pr, 2007.

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Democratic Governance as an Effective and Enduring Response to the Challenges Facing Latin America. International Institute for Democracy and Electoral Assistance, 2021. http://dx.doi.org/10.31752/idea.2021.83.

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The pandemic has highlighted longstanding shortcomings and challenges facing Latin America. We must make the most of this moment to bring about the historic transformations necessary to build a democratic governance that will bring peace, prosperity and social justice. The region requires structural change and this is, of course, nothing new. But now may be the most propitious moment in decades due to the electoral super-cycle that Latin America is experiencing from late 2020 until 2024, a period in which all presidential positions in the region are up for renewal, together with numerous legislative and subnational authorities. It is a unique opportunity that the region cannot afford to miss. This report was prepared by Jorge Máttar at the request of International IDEA under the direction of Daniel Zovatto. It is based on the minutes of seminars from The State of Democracy in Latin America project, implemented in 2020 by the Fundação Fernando Henrique Cardoso, the Fundación Democracia y Desarrollo, and International IDEA, and on the sessions of the International Forum of Santo Domingo on the Socioeconomic and Political Panorama for Latin America, held jointly with Funglode in January 2021. It also includes reflections, analysis and proposals produced together with Sergio Bitar (Bitar and Zovatto 2021), as well as those of Fernando Reyes Matta, Sergio Fausto and José Octavio Bordón. Other papers and empirical evidence have provided essential background for the preparation of this report.
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Friel, Sharon. Climate Change and the People's Health. Edited by Nancy Krieger. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190492731.001.0001.

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Climate change threatens humanity and the planet on which we live. Social inequities, including in the health outcomes that different population groups enjoy, also pose a threat to humanity and our freedom to live healthy and flourishing lives. This book makes three key contributions to the current understanding of climate change and health inequity. First, it describes how climate change interacts with the social determinants of health and exacerbates existing health inequities. Second, the book introduces the concept of a “consumptagenic system.” This is an integrated network of market-based policies, processes, governance, and modes of understanding that fuel unhealthy and environmentally destructive production and consumption. Finally, the book outlines some of the progressive steps that are necessary to move from denial and inertia toward effective mobilization against the status quo and hope for the future. The book argues that this requires a systems approach and calls for action that uses fit-for-purpose knowledge and analytical tools from across the sciences, social sciences, and even humanities. The book finishes with the offer of a policy vision and describes some pathways forward across economic, social, and health policy domains that will reduce inequality, mitigate further environmental degradation, and improve health.
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Book chapters on the topic "Effective Moment of Inertia"

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Horvath, Joan, and Rich Cameron. "Moment of Inertia." In 3D Printed Science Projects Volume 2, 83–96. Berkeley, CA: Apress, 2017. http://dx.doi.org/10.1007/978-1-4842-2695-7_5.

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Gooch, Jan W. "Moment of Inertia." In Encyclopedic Dictionary of Polymers, 472. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7664.

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Ghavami, Parviz. "Moment of Inertia." In Mechanics of Materials, 111–41. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07572-3_5.

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Beatty, Millard F. "The Moment of Inertia Tensor." In Principles of Engineering Mechanics, 355–404. Boston, MA: Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-31255-2_5.

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Islam, M. Rashad, Md Abdullah Al Faruque, Bahar Zoghi, and Sylvester A. Kalevela. "Moment of Inertia of Area." In Engineering Statics, 239–68. First edition. | Boca Raton: CRC Press, 2021.: CRC Press, 2020. http://dx.doi.org/10.1201/9781003098157-10.

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Singh, Dinesh Kumar. "Centroid and Moment of Inertia." In Strength of Materials, 89–142. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59667-5_3.

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Schulze, Sören, Carsten Teichgräber, and Maik Berger. "Motion Design Considering Moment of Inertia." In New Trends in Mechanism and Machine Science, 203–10. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-44156-6_21.

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Gross, C. J., J. Heese, K. P. Lieb, C. J. Lister, B. J. Varley, A. A. Chishti, and W. Gelletly. "The Moment of Inertia of 78Sr*." In Nuclear Structure of the Zirconium Region, 127–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73958-3_17.

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Bullen, K. E. "The figure and moment of inertia of the Earth." In The Earth’s Density, 43–59. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-009-5700-8_5.

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Stekel, A., A. Notea, and Y. Shamir. "Characterization of Moment of Inertia Variations by Holographic Interferometry." In Review of Progress in Quantitative Nondestructive Evaluation, 561–68. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5772-8_70.

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Conference papers on the topic "Effective Moment of Inertia"

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Abduljalee, Yasir W., Mustafa M. Khattab, and Adnan Falih Ali. "Effective Moment of Inertia of Beam-Slab Section under Lateral Load." In The 5th World Congress on Civil, Structural, and Environmental Engineering. Avestia Publishing, 2020. http://dx.doi.org/10.11159/icsect20.135.

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Taniguchi, Tomoyo, and Toru Segawa. "Effective Mass of Fluid for Rocking Motion of Flat-Bottom Cylindrical Tanks." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77580.

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In analyzing the rocking motion of the flat-bottom cylindrical tanks subjected to severe earthquakes, the effective mass of fluid for the rocking motion and its moment inertia around the pivoting bottom edge of the tank would be indispensable dynamical properties, because they couples the fluid-shell interaction motion, the so-called bulging motion, with the rocking motion. This paper quantifies them based on the equilibrium of the fluid pressure and inertia force accompanying the angular acceleration acting on the pivoting bottom edge of the tank. Employing a general mathematical solution for the fluid pressure that can calculate either fully or partially uplifted tank bottom, this paper presents mathematical formulae of the effective mass of fluid for the rocking motion and its moment inertia. These quantities are given by an explicit function of dimensional variables of the tank but with Fourier series. For designer’s convenience, the effective moment inertia and effective mass of fluid for the rocking motion and its center of gravity from the pivoting bottom edge are normalized accordingly and are depicted on diagrams.
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Fain, B., F. Souchon, A. Berthelot, R. Anciant, P. Robert, and G. Jourdan. "Dynamic control of an accelerometer bandwidth through tunable damping factor and effective moment of inertia." In 2018 IEEE Micro Electro Mechanical Systems (MEMS). IEEE, 2018. http://dx.doi.org/10.1109/memsys.2018.8346714.

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Deneko, Enio, and Anjeza Gjini. "SLS design of FRP reinforced concrete beams based on different calculation of effective moment of inertia." In University for Business and Technology International Conference. Pristina, Kosovo: University for Business and Technology, 2014. http://dx.doi.org/10.33107/ubt-ic.2014.3.

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Minegishi, Hiroaki, Hiromi Matsushita, Masaru Sakakida, and Takaaki Koike. "Development of a Small Mixed-Flow Turbine for Automotive Turbochargers." In ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/95-gt-053.

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In recent years, turbocharging technologies for passenger cars have progressed significantly. However, “Turbo Lag” is still one of the most important problems in turbocharging technologies. In order to improve response to acceleration, it is effective to reduce the polar moment of inertia of rotating parts. The turbine rotor designed with small diameter, light weight and high specific-speed contributes toward reducing inertia moment of the rotating parts. The further request for the smaller moment of inertia for passenger car applications made it difficult to satisfy the request with a conventional radial turbine rotor. This is why we developed a mixed-flow turbine rotor. This paper explains the computer analysis we carried out and experimental test data of the mixed-flow turbine for passenger car applications.
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Guo, Yichao, and Robert G. Parker. "Sensitivity of General Compound Planetary Gear Natural Frequencies and Vibration Modes to Model Parameters." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14978.

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This paper studies sensitivity of compound planetary gear natural frequencies and vibration modes to system parameters. Based on a lumped parameter model of general compound planetary gears and their distinctive modal properties [1], the eigensensitivities to inertias and stiffnesses are calculated and expressed in compact formulae. Analysis reveals that eigenvalue sensitivities to stiffness parameters are directly proportional to modal strain energies, and eigenvalue sensitivities to inertia parameters are proportional to modal kinetic energies. Furthermore, the eigenvalue sensitivities to model parameters are determined by inspection of the modal strain and kinetic energy distributions. This provides an effective way to identify those parameters with the greatest impact on tuning certain natural frequencies. The present results, combined with the modal properties of general compound planetary gears, show that rotational modes are independent of translational bearing/shaft stiffnesses and masses of carriers/central gears, translational modes are independent of torsional bearing/shaft stiffnesses and moment of inertias of carriers/central gears, and planet modes are independent of all system parameters of other planet sets, the shaft/bearing stiffness parameters of carriers/rings, and the mass/moment of inertia parameters of carriers/central gears.
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Hassanpour, Pezhman, Monica Weaser, Ray Colquhoun, Khaled Alghemlas, and Abdullah Alrashdan. "Experimental Determination of the Mass Moment of Inertia of a Flywheel Using Dynamics and Statistical Methods." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-53557.

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This paper presents the analysis of the mass moment of inertia (MMI) of a flywheel using experiment data. This analysis includes developing two models for determining the MMI of the flywheel. The first model considers the effect of mass moment of inertia only, while the second model takes the effect of friction in the ball bearings into consideration. The experiment results have been used along with both models to estimate the MMI of the flywheel. It has been demonstrated that while the model with no friction can be used for estimating the MMI to some extent, the model with friction produces the most accurate result. On the other hand, an effective application of the model with friction requires several experimental measurements using different standard masses. This translates into more expensive method in terms of experiment time and equipment cost.
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Jayakumar, C. V., S. Sathikh, and C. Jebaraj. "Comparison of Bending Models of Multiwire Strand." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/vib-4076.

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Abstract Nine discrete thin rod models are critically compared for their merit for studying the bending response of strands. Four bench marks employed for comparison are two (upper and lower) bounds of bending stiffness and two strand curvatures at slip initiation and completion. The strand configuration chosen, the way in which the lay angle is employed to describe the effective area of cross section as well as moments of inertia of the wire and the components of forces; the inclusion or omission of the wire interaction with the core through friction contact and the moment of inertia of the wire about its own diameter; and of wire couples in part or full are identified as factors that make the difference. Numerical values of the four bench marks for these models are presented.
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Kim, Joo H., Yujiang Xiang, Rajankumar Bhatt, Jingzhou Yang, Hyun-Joon Chung, Amos Patrick, Jasbir S. Arora, and Karim Abdel-Malek. "Efficient ZMP Formulation and Effective Whole-Body Motion Generation for a Human-Like Mechanism." In ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/detc2008-49925.

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An approach of generating dynamic biped motions of a human-like mechanism is proposed. An alternative and efficient formulation of the Zero-Moment Point for dynamic balance and the approximated ground reaction forces/moments are derived from the resultant reaction loads, which includes the gravity, the externally applied loads, and the inertia. The optimization problem is formulated to address the redundancy of the human task, where the general biped and task-specific constraints are imposed depending on the task requirements. The proposed method is fully predictive and generates physically feasible human-like motions from scratch; it does not require any input reference from motion capture or animation. The resulting generated motions demonstrate how a human-like mechanism reacts effectively to different external load conditions in performing a given task by showing realistic features of cause and effect. In addition, the energy-optimality of the upright standing posture is numerically verified among infinite feasible static biped postures without self contact. The proposed formulation is beneficial to motion planning, control, and physics-based simulation of humanoids and human models.
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M. Ribeiro, Alexandre, André R. Fioravanti, and Ely C. de Paiva. "Model-Based Approach for Cornering Stiffness and Yaw Moment of Inertia Estimation of a Scaled Electric Vehicle." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1007.

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This paper addresses the problem of estimating the tire cornering stiffness coecient and the yaw moment of inertia of a scaled car-like vehicle. The method merges measurements information of the vehicle lateral response along with its nonlinear planar model. Aiming effective and accurate results, we propose solving an optimization problem based on a representative dataset obtained experimentally using a persistently exciting input. The validation of the proposed method is shown by comparing the agreement between numerical simulations, evaluated with the estimated parameters, with experimental data. Three representative maneuvers are considered for this purpose, including indoor and outdoor experiments.
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Reports on the topic "Effective Moment of Inertia"

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LaFiandra, Michael E. A Tool for Calculating the Center of Mass and Moment of Inertia of Small Arms Weapons. Fort Belvoir, VA: Defense Technical Information Center, July 2008. http://dx.doi.org/10.21236/ada486345.

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Southwell, Brian, and Vanessa Boudewyns, eds. Curbing the Spread of Misinformation: Insights, Innovations, and Interpretations from the Misinformation Solutions Forum. RTI Press, December 2018. http://dx.doi.org/10.3768/rtipress.2018.cp.0008.1812.

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Although many people now have access to more accumulated information than has ever been the case in human existence, we also now face a moment when the proliferation of misinformation, or false or inaccurate information, poses major challenges. In response to these challenges and to build collaboration across disciplines and expertise and a more effective community of learning and practice, the Rita Allen Foundation partnered with RTI International and the Aspen Institute along with Craig Newmark Philanthropies, Democracy Fund, and Burroughs Wellcome Fund to hold the Misinformation Solutions Forum in October 2018 at the Aspen Institute in Washington, DC. This forum brought together academic researchers, technology professionals, data scientists, journalists, educators, community leaders, funders and a set of graduate student fellows to explore promising ideas for curbing the spread of misinformation. We issued an open call for ideas to be featured in the forum that sought interventions focused on reducing behaviors that lead to the spread of misinformation or encouraging behaviors that can lead to the minimization of its influence. Interventions with technological, educational, and/or community-based components were encouraged, as were projects involving science communication, public health and diverse populations. A panel of expert judges assessed submissions through a blind review process; judges included representatives from the Rita Allen Foundation, as well as external institutions such as the Democracy Fund, the National Institutes of Health, the Poynter Institute, First Draft, and academic institutions. Authors developed the essays presented here based on both original submissions and the iterative collaboration process that ensued.
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CAPACITY EVALUATION OF EIGHT BOLT EXTENDED ENDPLATE MOMENT CONNECTIONS SUBJECTED TO COLUMN REMOVAL SCENARIO. The Hong Kong Institute of Steel Construction, September 2021. http://dx.doi.org/10.18057/ijasc.2021.17.3.6.

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The extended stiffened endplate (8ES) connection is broadly used in the seismic load-resisting parts of steel structures. This connection is prequalified based on the AISC 358 standard, especially for seismic regions. To study this connection’s behaviors, in the event of accidental loss of a column, the finite element model results were verified against the available experimental data. A parametric study using the finite element method was then carried out to investigate these numerical models’ maximum capacity and effective parameters' effect on their maximum capacity in a column loss scenario. This parametric analysis demonstrated that these connections fail at the large displacement due to the catenary action mode at the rib stiffener's vicinity. The carrying capacity, PEEQ, Von-Mises stress, middle column force-displacement, critical bolt axial load, and the beam axial load curves were discussed. Finally, using the Least Square Method (LSM), a formula is presented to determine the displacement at the maximum capacity of these connections. This formula can be used in this study's presented method to determine the maximum load capacity of the 8ES connections in a column loss scenario.
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