Experimental characterization of small thickness elastomeric layers submitted to impact loading

Arz, Jean-Pierre; Laville, Frédéric

doi:10.1016/j.jsv.2009.04.033

Cited by 8 publications

(10 citation statements)

References 10 publications

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“…where K and μ are the model parameters that need to be chosen to obtain a desired impact response (e.g., experimental data) [28]. Here, these parameters are selected to yield the same maximum impact force and coefficient of restitution as predicted from the proposed impact model.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

A nonlinear visco-elastoplastic impact model and the coefficient of restitution

2011

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A visco-elastoplastic model for the impact between a compact body and a composite target is presented. The model is a combination of a nonlinear contact law that includes energy loss due to plastic deformation and a viscous element that accounts for energy losses due to wave propagation and/or damping. The governing nonlinear equations are solved numerically to obtain the response. A piecewise linear version of the model is also presented, which facilitates analytical solution. The model predictions are compared to those of the well-known and commonly used HuntCrossley model. The effects of the various impact parameters, such as impactor mass, velocity, plasticity, and damping, on the impact response and coefficient of restitution are investigated. The model appears to be suitable for a wide range of impact situations, with parameters that are well defined and easily calculated or measured. Furthermore, the resulting coefficient of restitution is shown to be a function of impact velocity and damping, as confirmed by published experimental data.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

A nonlinear visco-elastoplastic impact model and the coefficient of restitution

2011

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“…Arz and Laville [37] experimentally showed that the parameters of the contact mechanism in normal direction are constant. They identified a unique set of parameters for different impact velocities.…”

Section: Identification Process and Resultsmentioning

confidence: 99%

Modeling the interaction between contact mechanisms in normal and tangential directions

Bazrafshan

Ahmadian

Jalali

2014

International Journal of Non-Linear Mechanics

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“…Numerical integration or differentiation creates distortion, 10,14,15 in part from the data smoothing required for computational stability. Many studies rely centrally on one differentiation, 7,16 one integration, 5,7,10,16,19 or two integrations.…”

Section: Numerical Distortionmentioning

confidence: 99%

“…15 Combining consecutive replicate tests as if concurrent can be accomplished by synchronizing a common high resolution signal, provided initial conditions, inputs, and test configuration are carefully controlled and identical. Multi-test comparison with intentional differences in inputs or hammer-string properties, requires an objective, consistent method to align them, to avoid introducing bias from visual inspection.…”

Section: Temporal Alignmentmentioning

confidence: 99%

“…a shank extension; 12,13 (4) indirectly by geometric calculation from angular position of the striker arm measured by encoder; 14 or (5) directly by motion tracking from highspeed imaging. 15 One study 16 takes an undesirably spartan approach to testing elastomeric materials, measuring only v h by electrodynamic methods, integrating and differentiating it to determine x h and a h , and calculating F h from a h .…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of the piano hammer-string interaction

Birkett

2013

The Journal of the Acoustical Society of America

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Experimental techniques for investigating the piano hammer-string interaction are described. It is argued that the accuracy, consistency, and scope of conclusions of previous studies can be compromised by limitations of the conventional methods relating to key inputs; physical distortion; numerical distortion, particularly when differentiation or integration of measured signals is used to derive primary response variables; contact identification; and synchronization issues. These problems are discussed, and experimental methods that have been devised to avoid them are described and illustrated by detailed results from a study of the hammer-string interaction in a vertical piano. High resolution displacements are obtained directly by non-contact high-speed imaging and quantitative motion tracking. The attention focused on achieving very accurate and consistent temporal and spatial alignment, including the objective procedure used for contact identification, allows meaningful comparisons of responses from separate tests. String motion at the strike point and on each side of it, as well as hammer motion, is obtained for eight dynamic levels from 1.06 to 2.98 m/s impact velocity. Detailed observations of the force-compression behavior of the hammer interacting with real strings are presented. The direct effects of hammer shank deflection and agraffe string pulses on the interaction are also highlighted.

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Experimental characterization of small thickness elastomeric layers submitted to impact loading

Cited by 8 publications

References 10 publications

A nonlinear visco-elastoplastic impact model and the coefficient of restitution

A nonlinear visco-elastoplastic impact model and the coefficient of restitution

Modeling the interaction between contact mechanisms in normal and tangential directions

Experimental investigation of the piano hammer-string interaction

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