... Rigid-body translation of the ligand RBR Rigid-body rotation of the ligand RD4 Distance-dependent dielectric with a prefactor of 4 SASA-1 Solvent ...
DTIC Science & Technology
A study is made of a model of the control rotation of an asymmetrical solid relative to its center of mass in the form of the Euler equations for an absolutely solid body. Stabilization is achieved by firing a motor rigidly attached to the spacecraft. Sta...
National Technical Information Service (NTIS)
In the present paper, the motion of a tethered system with large deformation and large displacement is discussed. In general, a tether is a cable or a wire rope, and a tethered system consists of a tether and the equipment attached to the tether. A tethered subsatellite in space is an example of a tethered system. In the present study, a tethered system consisting of a very flexible ...
NASA Astrophysics Data System (ADS)
A transmission-electron-microscope strong-beam technique is used to investigate the rigid-body translation across {l brace}110{r brace} antiphase boundaries in GaAs. The results show a translation in the {l angle}001{r angle} direction parallel to the plane of the boundary. The magnitude of the translation is determined, and the antisite bond lengths are discussed in terms of ...
Energy Citations Database
Kinematics and dynamics of particles and rigid bodies in one, two, and three dimensions. Work-energy and impulse-momentum concepts. Keywords: dynamics, motion, rigid body
NSDL National Science Digital Library
General relativistic dyadic formalism applied to metrics of rigid bodies moving in Einstein space of
NASA Technical Reports Server (NTRS)
In this paper, the dynamic behavior of a multibody system including very flexible beam elements is presented. The very deformable motion of a beam is demonstrated using absolute nodal coordinate formulation, which is based on finite element procedures, and the general continuum mechanics theory to represent the elastic forces. In order to consider the dynamic interaction ...
... Title : On the Motion of Compliantly-Connected Rigid Bodies in Contact, Part 2: A System for Analyzing Designs for Assembly. ...
... Accession Number : ADA444554. Title : Hamiltonian Dynamics of a Rigid Body in a Central Gravitational Field. Descriptive ...
A combination of Euler parameter kinematics and Hamiltonian mechanics provides a rigid body dynamics
... Title : Graphical Simulation of Articulated Rigid Body System Kinematics with Collision Detection. Descriptive Note : Master's thesis. ...
The defining equations for relativistic rigid-body translations are solved for a number of situations. (auth)
Conservation laws and Liapunov stability of free rotation of rigid body about principal axes derived
The importance of asymmetric grain boundaries has made it necessary to examine the reference frame for rigid body translations in asymmetric GBs. It is proposed that the volume expansion is determined relative to the interplanar spacing that maintains the bulk density at the GB and which is given by the average of the interplanar spacings of the planes ...
... arbitrarily assembled set of rigid bodies such that adjoining bodies have at ... The method is illustrated and applied with human-body models and finite ...
... Abstract : The dynamic equations of multi-body systems in the ... in the context of a single rigid body and then applied to a system of rigid bodies in an ...
In absolute reference frames, during their travel over the Earth's surface about a pole of rotation, some, in an analytic way, as a rigid body rotation around an Euler pole over the Earth's surface. Considering on the Earth's surface (Figure 2). This is only an ideal case, because in reality a plate that sub-rotates seem
E-print Network
The cornerstone of Newtonian mechanics is the inertial frame of reference. With this frame we can understand the difference between real and fictitious or pseudo forces and the importance of these two types of forces in Newton's analysis of his rotating bucket. This analysis was the basis of his belief in absolute space. Mach, who believed strongly in an empiricist view of ...
data generated by a standard rigid-body sim- ulation. Using sparse-matrix eigen-decomposition methodsFrom the 2002 ACM SIGGRAPH Symposium on Computer Animation Synthesizing Sounds from Rigid-Body-time applications is rigid-body simulations. Because rigid bodies are made up of incompliant ...
... Accession Number : AD0234422. Title : ON THE USE OF QUATERNIONS IN SIMULATION OF RIGID-BODY MOTION. Corporate ...
... containing rigid spheres arranged in a simple cubic lattice. ... REGIONS, RIGIDITY, SCATTERING, SIMPLE CUBIC LATTICES, SLENDER BODIES ...
... contact of a rigid body of given shape with the surface of a viscoelastic solid. The general theory of such contacts is considered in Chapter III. ...
dynamic stability and wind response. The vehicle is not a rigid body. It may look rigid, but it bends, and that little bit of bending ...
NASA Website
OBJECTIVE: To review the importance and benefits of flexible bronchoscopy and rigid bronchoscopy in airway foreign body inhalation in children. Prompt diagnosis will lead to safer outcomes when both types of endoscopy are employed within the operating room setting. METHODS: Retrospective review of all cases of foreign body inhalation ...
PubMed
... w. By combining the equation of motion of each body and constraint equations between bodies and using a set of orientational ...
The response of a structure at low frequencies with free boundary conditions is dominated by the rigid-body modes. The displacement shapes obtained from the low frequency values of the frequency response functions can be compared with ideal rigid-body mot...
Questions are presented of applying quaternions to general theoretical problems of the kinematics of rigid body rotation and to practical problems of control. The theory of finite rotations and the kinematics of rigid body rotation are presented on the ba...
These are: (1) Essentially Single Axis, Extended Rigid Body Effective Vehicle Dynamics; (2) Essentially Single Axis, Extended Rigid Body with Significant ...
... 4. TITLE AND SUBTITLE The Motion of Mars Pole I. Rigid Body Precession and Nutation 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. ...
... Accession Number : ADA425552. Title : The Motion of Mars Pole I. Rigid Body Precession and Nutation. Corporate Author ...
... Accession Number : ADA273742. Title : Steady Motions of Rigid Body Satellites in a Central Gravitational Field. Descriptive Note : Master's thesis,. ...
... Accession Number : ADA185646. Title : Stability Analysis of a Rigid Body with a Flexible Attachment Using the Energy-Casimir Method,. ...
... This report proposes two techniques for the separation of rigid body radar image from micro-Doppler effect caused signal in SAR/ISAR imaging. ...
... After masking these patterns, a radar image with the rigid body reflection can be obtained. The proposed methods are illustrated by examples. ...
... investigation of rigid body slamming was performed at the David Taylor Model ... such as project numb r, suhproject number, s ,stein numbers, task ...
... Accession Number : ADA050825. Title : Rigid Body Ship Responses and Associated Periods for a Series of Liquid Natural Gas (LNG) Ships. ...
A summary of quaternion in the kinematics of rigid body dynamics is presented. Quaternion is a four parameter system for specifying the orientation of a rigid body. Four parameters of quaternion are updated by integrating linear differential equations who...
of the rigid body on the inertial rod. Mecanics and cotrol processes. Proc. of St.Petersburg State Techn. Univ
... Accession Number : ADA018856. Title : Hovercraft Rigid Body Response to Free Field Airblast. Corporate Author : NAVAL ...
... 4. TITLE AND SUBTITLE Hamiltonian Dynamics of a Rigid Body in a Central Gravitational Field 5a. CONTRACT NUMBER 5b. GRANT NUMBER ...
... each element. Nodes merged with rigid bodies will have kinetic energies included as total rigid -body energy. Also, rotational ...
... Accession Number : ADA403152. Title : Biomechanics and Energetics of Locomotion in Rigid-Bodied Fishes. Descriptive Note : Final rept. ...
... 4. TITLE AND SUBTITLE Almost Poisson Integration of Rigid Body Systems 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. ...
... Accession Number : ADA453799. Title : Almost Poisson Integration of Rigid Body Systems. Descriptive Note : Research rept. ...
Page 1. REPORT NO. UIUCDCS-R-88-1469 UILU-ENG-88-1775 November 1988 A QUALITATIVE APPROACH TO RIGID BODY MECHANICS by ...
A method for the analysis of the stability of the stationary motions of systems of a certain type is proposed which is based on the Raus-Liapunov method but, unlike this method, does not require knowledge of the explicit form of the integrals of the equations of motion (except for the energy integral). It is noted that this method can be used to study the stability of the stationary motions of ...
...includes the rigid ventilating bronchoscope, rigid nonventilating bronchoscope, nonrigid bronchoscope, laryngeal-bronchial telescope, flexible foreign body claw, bronchoscope tubing, flexible biopsy forceps, rigid biopsy curette, flexible biopsy...
Code of Federal Regulations, 2011
Wellformed Systems of Point Incidences for Resolving Collections of Rigid Bodies Meera Sitharam a wellconstrained system of incidence con- straints for recombining its cluster decomposition is a significant of rigid clusters with shared point and linesegment objects. Keywords: Decomposition and Recombination
A mathematical description of the dynamic behavior of systems of interconnected deformable bodies is presented. The displacement field of a body is resolved into a displacement field due to a rigid body motion and a displacement field due to deformation. ...
Language: English ...
NBII National Biological Information Infrastructure
Method of inverting nonlinear equations of rotational dynamics of rigid body used to design feedback
... MUSCLES, PARALLEL ORIENTATION, REPLICAS, MOTORS, RIGIDITY, BODIES, CONTRACTION, JOINTS, LAGRANGIAN FUNCTIONS ...
This report discusses the development and underlying mathematics of a rigid-body computer model of a
Questions are presented of applying quaternions to general theoretical problems of the kinematics of
The dynamical problem for a continuous body constrained to undergo only plane BORN motions is solved in special relativity.
... ROOFS, *UNDERGROUND STRUCTURES, BODIES, DAMAGE, DEGREES OF ... STRUCTURAL ENGINEERING AND BUILDING TECHNOLOGY. ...
... the rigid bodies represent the vertebral bodies and head and the deform- able elements represent the intervertebral discs, ligaments, facet joints ...
... the rigid bodies represent the vertebral bodies and head and the deformable elements represent the intervertebral discs, ligaments, facet joints and ...
The traditional high-level algorithms for rigid body simulation work well for moderate numbers of bodies but scale poorly to systems of hundreds or more moving, interacting bodies. The problem is unnecessary synchronization implicit in these methods. Jefferson 's timewarp algorithm [22] is a technique for ...
Consideration is given to questions of the calculation of critical rpm and resonance regimes of engines, the rigidity of the body of which is commensurable with, or less than, the rigidity of the rotor, which is frequently encountered in practice of aircr...
... of rigid body shelter - equipment vibrations, see Table ... data to the structural dynamic characteristics of ... shelter's lowest structural vibration modes, as ...
two concepts: scattering by a central potential and collision of a point particle with a rigid body. In Ref. 2, a comparison was made, for the Ar-N. system, ...
Two derivations of defining equations for relativistic rigid-body translations are presented, both of which yield the same defining equation. One derivation is based on setting up an idealized dynamical model of a relativistic rigid body, while the second derivation is based only on covariance and simplicity postulates. The ...
An apparatus and method is utilized to measure relative rigid body motion between two bodies by measuring linear motion in the principal axis and linear motion in an orthogonal axis. From such measurements it is possible to obtain displacement, departure from straightness, and angular displacement from the principal axis of a ...
DOE Information Bridge
A filament flapping in the bow wake of a rigid body is considered in order to study the hydrodynamic interaction between flexible and rigid bodies in tandem arrangement. Both numerical and experimental methods are adopted to analyze the motion of the filament, and the drag force on both bodies ...
2 is the rotor periodic system obtained by rigidly restraining the body. ... We will consider here both the rotor/body periodic system ...
... conservation constraint for the system of 'rigidly' connected bodies is invoked to avoid solution of translational equations of motion for each body. ...
... for predicting the absolute and relative body deflections of ... Subject Categories : STRUCTURAL ENGINEERING AND BUILDING TECHNOLOGY. ...
... in terms of three-body contributions on the basis of the theory developed by this author and Zimering to explain the absolute stability of the face ...
... Title : A PULSED LIGHT SOURCE WITH RADIATION SIMILAR TO THE RADIATION OF AN ABSOLUTELY BLACK BODY AT A TEMPERATURE OF ...
Perhaps the most common approximation in engineering is that, relative to its neighbors, a system component is structurally rigid. This paper presents a development of the rigid assumption for use in nonlinear, implicit finite element codes. In this metho...
A protective mounting assembly includes an electrical connector having a waterproof body surrounding and protecting a waterproof interface. Components' signal leads are coupled to the interface at a first side thereof. A rigid foundation is rigidly couple...
Differences between the observed forced nutation component amplitudes of the Earth and predicted nutation amplitudes for a rigid Earth are a result of differences between the theoretical rigid structure of the Earth used in older models and the actual ela...
...postrhinoscope, rhinoscope, salpingoscope, flexible foreign body claw, flexible biopsy forceps, rigid biopsy curette, flexible biospy brush, rigid biopsy forceps and flexible biopsy curette, but excludes the fiberoptic light source and...
...This generic type of device includes the flexible foreign body claw, flexible biopsy forceps, rigid biopsy curette, flexible biopsy brush, rigid biopsy forceps and flexible biopsy curette, but excludes the fiberoptic light source and...
Conditions are determined under which solid bodies will float on a liquid surface in stable equilibrium, under the influence of gravity and of surface tension. These include configurations in which the density of the body exceeds the density of the ambient liquid, so that for an infinitely deep liquid in a downward gravity field there is no ...
Measurement of an optical surface by a figure measuring device allows one to make an estimate of the shape of the surface. The absolute accuracy in locating the true'' surface depends on the sources of error in the measurement process -- both random errors and systematic errors. Analysis procedures have been developed to extract surface figure information ...
The authors investigated event dynamics as a determinant of the perceptual significance of forms of motion. Patch-light displays were recorded for 9 simple events selected to represent rigid-body dynamics, biodynamics, hydrodynamics, and aerodynamics. Observers described events in a free-response task or by circling properties on a list. Cluster analyses performed on ...
Relative excitation functions for the total neutron production and total charged-particle (proton, alpha ) production above 2 MeV fom /sup 16/O e, Ni, Ge, and Zr have been measured at theta /sub lab = 90 deg and in the bombarding energy range from 30 to 60 MeV. For the most part, the onset of reaction product yields agrees well with the barrier heights as determined from /sup 16/O ...
The Quaternions with an application to Rigid Body Dynamics Evangelos A. Coutsias and Louis Romero 1999 1 Brief History William Rowan Hamilton invented the quaternions in 1843, in his effort be possible, he considered systems with four complex units and arrived at the quaternions. He real- ized that
Consider the problem of planning and predicting the motion of a flexible object amidst obstacles in the plane by modelling the flexible object as a rigid root body, attached to compliant members of torsional springs. The root's position may be controlled,...
In recent work, the exact dynamic equations for the motion of a finite rigid body in a central gravitational field were shown to be of Hamiltonian form with a noncanonical structure. In this paper, the notion of relative equilibrium is introduced, based u...
... 4. TITLE AND SUBTITLE Steady Rigid-Body Motions in a Central Gravitational Field 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. ...
The authors consider a system consisting of a rigid body to which a linear extensible shear beam is attached. For such a system the Energy-Casimir method can be used to investigate the stability of the equilibria. In this case, it can be shown that a test...
One of the first reports, directed at the study of movement of ice, attempted to measure a rigid body motion based on noisy observations at two distinct times of observable points on the rigid body. The noise makes the measured locations subjects to the e...
A summary of quaternion in the kinematics of rigid body dynamics, particularly for an aeroplane or an artificial satellite, is presented. Quaternion is a four-parameter system for specifying the orientation of a rigid body, and applied to evade singular p...
The results of an experimental investigation of the importance of air density and other real fluid properties to water impact of small, blunt, rigid bodies are given. Assuming peak impact pressure to be the dependent variable, the significant fluid proper...
A general purpose mathematical formulation is described for dynamic analysis of a helicopter consisting of flexible and/or rigid bodies that undergo large translations and rotations. Rigid body and elastic sets of generalized coordinates are used. The rig...
General simulation equations are derived for the rigid body motion of slung load systems. These systems are viewed as consisting of several rigid bodies connected by straight-line cables or links. The suspension can be assumed to be elastic or inelastic, ...
The approach taken in this thesis was to develop a single rigid body dynamic human model with massless legs. Instead of a Lagrangian model, which complicates the calculations exponentially as the complexity of the system increases, the Newton-Euler method...
Employing the Timoshenko beam theory, the classical theory of flexural motions of thin plates and the theory of elasticity, the problem of continuous failure of bond between a thin elastic plate and a rigid body is studied. The bond failure is due to line...
The tropical marine fishes of the family Ostraciidae (boxfishes, trunkfishes, cowfishes) are the best available living models for engineered autonomous underwater vehicles (AUVs). The forward 2/3 - 3/4 of their bodies are encased in rigid bony carapaces t...
