Coefficient of Restitution
Impact models and coefficient of restitution: A review
... CONCLUSIONS AND RECOMMENDATIONS Review on the coefficient of restitution (COR) and impact models have been presented in this paper. Until now, energetic COR that was introduced by Stronge is the most ...
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A note on coefficient of restitution models including the effects of impact induced vibration
... In this work we consider the case of a multi-modal system sub- ject to impact. An energy balance is developed for an arbitrary contact interval which includes the effects of modal vibration. The energy balance is used to ...
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Effects of the impact angle on the coefficient of restitution in rockfall analysis based on a medium-scale laboratory test
... tive rock. The first approach, a lumped-mass model, treats the rock as a single and dimensionless point and assigns all of the properties of the rock to that point. The second model is a rigid body model, which considers ...
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A note on modelling multi-degree of freedom vibro-impact systems using coefficient of restitution models
... using coefficient of restitution ...a coefficient of restitution ...the coefficient of restitution must be used in numerical simulations of the system in order to match dynamical ...
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The effects of gravel cushion particle size and thickness on the coefficient of restitution in rockfall impacts
... Abstract. Gravel cushions are widely used to absorb the im- pact energy of falling rocks in open-pit mines. A particularly important application is to enhance the energy-absorbing ca- pacity of rockfall sheds. In this ...
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Surface Deformation in a Liquid Environment Resulting from Single Particle Collisions
... normal coefficient of restitution and deformation parameters account for losses due to lubrication effect and inelasticity, identifying then, the dominant energy loss mechanism during the collision ...
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Lactose smearing in transport lines : a thesis presented in partial fulfilment of the requirements for the degree of Masters in Process Engineering at Massey University
... Radius of deformed region Correction Factor for particle size Specific Heat a-lactose Depth of amorphous layer Diameter of particle Young 's modulus Coefficient of restitution Young Modu[r] ...
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Influence of measurement volume on predicted attrition by the distinct element method
... measurement volume number median particle diameter particle sieve size coefficient of restitution shear modulus force impeller rotations empirical constant in Neil and Bridgwater relatio[r] ...
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Computational Fluid Dynamics as a Tool for Quantitative Biosafety Studies
... During centrifuge operation, it was assumed that the most likely point of microbial release was the top of the centrifuge bowl, at a velocity equal to the tangential velocity of the spinning bowl, which was calculated to ...
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Reliability studies on the influence of joint clearance on the kinematics of the nose landing gear mechanism of a transport aircraft using contact theory
... The successful deployment of Landing gear Up- lock and Down-lock is dependent on the accuracy of the Landing Gear mechanism [2]. Any deviation at the extreme positions of extension and retraction would result in the ...
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The Behavior of a Falling Particle in a Funnel
... Theoretically, the anomalous behavior is predicted to be more pronounced for higher values of the coefficient of restitution. Surprisingly, in our experimental work these effects are more pronounced for ...
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The impacting cantilever: modal non-convergence and the importance of stiffness matching.
... A commonly used formalism is that of rigid-body mechanics in which impact is instantaneous and lossy, with the energy dissipation being captured by a Newtonian coefficient of restitution. The study of such ...
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An Application of the Study of Granular Shocks to Aerospace Problems.
... The disadvantage to proximity-based particle collision testing is that, in some cases, particles do indeed collide with other particles outside of the tested area. Because particles outside of the tested area are not ...
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Numerical Investigation of Particle Rebound Characteristics with Finite Element Method
... This restitution phase can be considered as elastic because only elastic strain energy is ...the coefficient of restitution of elastic collisions was in the range 98% - 99%, implying that the energy ...
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Optimization and experiment of key components in pneumatic peanut pod conveyor
... In Table 1, it is shown that the angle of friction (θ) of Baisha peanuts is greatest on rubber, while the difference in θ between silica gel and Q235 steel plate is minimal. Teflon tape has the smallest θ. Since Teflon ...
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THE EFFECT OF THE ALUMINIUM ALLOY SURFACE ROUGHNESS ON THE RESTITUTION COEFFICIENT
... Figure 8 presents the influence of the geo- metric structure on the character of the impres- sion created. This paper is intended to clarify this relationship as the influence of the surface roughness onto the ...
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Evaluation of a momentum based impact model in frontal car collisions for the prospective assessment of ADAS
... In contrast to VT, retrospective analyses use statistical approaches for determining the influence of specific safety systems on the accident and injury occurrence. The basic data for these analyses is usually gathered ...
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Effect of Reynolds number on particle interaction and agglomeration in turbulent channel flow
... significant forces in such systems are the drag and buoyancy forces, although buoyancy was neglected due to the effect of gravity not being considered. The shear-induced Saffman lift force was taken into account as it ...
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Influence of Elastic Stiffness and Surface Adhesion on Bouncing of Nanoparticles
... In the sticking regime, the coefficient of restitution stays below 1 indicating inelastic energy losses during the col- lision. We verified that the collisions are purely elastic in the sense that no ...
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Interaction law for a collision between two solid particles in a viscous liquid
... normal coefficient of restitution and a proper lubricated friction coefficient, the contact model is able to predict the rebound motion of the impact sphere, enabling a description of the ...
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