Vertical impact of the side of a rigid circular cylinder against an elastic half-space

1989 ◽  
Vol 25 (12) ◽  
pp. 1201-1207
Author(s):  
S. N. Popov
Keyword(s):  
Circular Cylinder ◽  
Half Space ◽  
Elastic Half Space ◽  
Vertical Impact

Deformation of an elastic half-space in the sliding of a circular cylinder

1981 ◽  
Vol 13 (1) ◽  
pp. 19-25
Author(s):  
E. A. Kuznetsov ◽  
G. A. Gorokhovskii
Keyword(s):  
Circular Cylinder ◽  
Half Space ◽  
Elastic Half Space

scholarly journals Contact Response Analysis of Vertical Impact between Elastic Sphere and Elastic Half Space

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Yang Yang ◽  
Qingliang Zeng ◽  
Lirong Wan
Keyword(s):  
Rigid Body ◽  
Half Space ◽  
Contact Process ◽  
Elastic Half Space ◽  
Metal Plate ◽  
3D Simulation ◽  
Elastic Sphere ◽  
Research Results ◽  
Contact Response ◽  
Vertical Impact

At present, the contact problem between the particle and the plane plate is generally equivalent to the rigid sphere impacting the elastic half space or the elastic sphere impacting the rigid surface. However, in the actual contact process, there will be no rigid body, and both contact and contacted object will deform and absorb energy. The research results obtained from the equivalent of the contact material to the rigid body are less accurate. In order to obtain the accurate mechanical relation and contact response, we took the research of impact between particles and the metal plate as a breakthrough in which the particle is equivalent to an elastic sphere and the metal plate is equivalent to an elastic half space and established the theory of vertical impact contact between elastic sphere and elastic half space by the Hertz contact theory. Through the dynamic simulation of an elastic sphere which has similar properties with rock impacting target in elastic half space in LS-DYNA, the correctness of the established theory and the feasibility of the contact process simulated by LS-DYNA are verified. Based on the established theory and 3D simulation, we studied the influence law of material parameters on the contact response and analyzed the differences of the collision vibration signals caused by the different contact objects. From the above research results, we obtain that the theoretical model is more accurate to predict the maximum contact force and contact displacement in this paper than traditional Hertz theory. And the sphere radius and both contact objects’ elastic modulus have larger influence on the contact response than sphere density, while the Poisson’s ratio has the smallest influence on the contact response results. Different material properties will cause the different contact response. The conclusions of this paper provide a theoretical calculation method for contact and a 3D simulation method for elastic half space and provide theoretical guidance for the differences analysis of the vibration signal.

scholarly journals Torsional Impulsive Response of an Elastic Half-Space Due to a Rigid Circular Cylinder

1977 ◽  
Vol 43 (372) ◽  
pp. 2865-2871
Author(s):  
Hiroyuki MATSUMOTO ◽  
Ichiro NAKAHARA ◽  
Misao SEKIMOTO
Keyword(s):  
Circular Cylinder ◽  
Half Space ◽  
Elastic Half Space ◽  
Impulsive Response

scholarly journals Torsional Impulsive Response of an Elastic Half-Space due to a Rigid Circular Cylinder

1978 ◽  
Vol 21 (154) ◽  
pp. 572-578 ◽  
Author(s):  
Hiroyuki MATSUMOTO ◽  
Ichiro NAKAHARA ◽  
Misao SEKIMOTO
Keyword(s):  
Circular Cylinder ◽  
Half Space ◽  
Elastic Half Space ◽  
Impulsive Response

The efficiency of application of virtual cross-sections method and hypotheses MELS in problems of wave signal propagation in elastic waveguides with rough surfaces

2016 ◽  
pp. 3564-3575 ◽  
Author(s):  
Ara Sergey Avetisyan
Keyword(s):  
Half Space ◽  
Cross Sections ◽  
Classical Method ◽  
Signal Propagation ◽  
Elastic Half Space ◽  
Layered Systems ◽  
Surface Layers ◽  
Inhomogeneous Surface ◽  
Wave Signal ◽  
The Impact

The efficiency of virtual cross sections method and MELS (Magneto Elastic Layered Systems) hypotheses application is shown on model problem about distribution of wave field in thin surface layers of waveguide when plane wave signal is propagating in it. The impact of surface non-smoothness on characteristics of propagation of high-frequency horizontally polarized wave signal in isotropic elastic half-space is studied. It is shown that the non-smoothness leads to strong distortion of the wave signal over the waveguide thickness and along wave signal propagation direction as well.  Numerical comparative analysis of change in amplitude and phase characteristics of obtained wave fields against roughness of weakly inhomogeneous surface of homogeneous elastic half-space surface is done by classical method and by proposed approach for different kind of non-smoothness.

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