Dynamic Frictional Sliding Modes between Two Homogenous Interfaces

2017-09-15
Taj, W.
Çöker, Demirkan
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
107
views
58
downloads
Dynamic frictional sliding behaviour between two homogenous Homalite blocks is studied. The blocks are initially held together using a constant compressive stress. The sliding motion is initiated by impacting one of the blocks with an external object. The resulting sliding modes are inspected. Initiation of fretting is examined by studying the opening stresses in the interface.
FEM, Dynamic friction, Impact, Crack
https://hdl.handle.net/11511/36415
Department of Aerospace Engineering, Conference / Seminar

Suggestions

Friction identification and compensation of its effects in stabilized platforms
Sincar, Eyyüp; Balkan, Raif Tuna; Platin, Bülent Emre; Department of Mechanical Engineering (2013)
A frequent problem encountered in the stabilization of a dynamic system supported by a moving base is the disturbance rejection associated with moving components. Due to relative motion of adjacent components, the friction induces a destabilizing force from base motion to the stabilized object, which degrades the motion accuracy. Therefore, the compensation of frictional effects is necessary in order to obtain a highly precise stabilization performance, especially, when the stabilized system undergoes low-v...
Frictional sliding modes along an interface between identical elastic plates subject to shear impact loading
Çöker, Demirkan; Needleman, A.; Rosakis, A.J. (2005-04-01)
Frictional sliding along an interface between two identical isotropic elastic plates under impact shear loading is investigated experimentally and numerically. The plates are held together by a compressive stress and one plate is subject to edge impact near the interface. The experiments exhibit both a crack-like and a pulse-like mode of sliding. Plane stress finite element calculations modeling the experimental configuration are carried out, with the interface characterized by a rate and state dependent fr...
Dynamic crack growth along a polymer composite-Homalite interface
Çöker, Demirkan; Needleman, A. (2003-03-01)
Dynamic crack growth along the interface of a fiber-reinforced polymer composite-Homalite bimaterial subjected to impact shear loading is investigated experimentally and numerically. In the experiments, the polymer composite-Homalite specimens are impacted with a projectile causing shear dominated interfacial cracks to initiate and subsequently grow along the interface at speeds faster than the shear wave speed of Homalite. Crack growth is observed using dynamic photoelasticity in conjunction with high-spee...
Dynamic stress concentrations around a single fiber break in unidirectional composites: a 3D finite element analysis
Mutlu, Çağlar; SABUNCUOĞLU, BARIŞ; Kadioglu, F Suat; Swolfs, Yentl (2023-01-01)
When a fiber break occurs in longitudinal tension of a unidirectional composite, dynamic stress concentrations arise, which can be different from the ones found considering only static loading. The current paper analyzes the dynamic stress concentration factors (SCF) around a fiber break in unidirectional carbon fiber/epoxy composites. 3D finite element models with random and hexagonal fiber distributions were analyzed to investigate the evolution of stress concentrations as a function of time and position....
Finite element modeling of dynamic interfacial rupture and sliding
Çöker, Demirkan; Needleman, A. (null; 2005-12-01)
Analyses of fracture and sliding under dynamic loading conditions are discussed. The calculations are carried out within a framework where two constitutive relations are used: a volumetric constitutive relation between stress and strain and a surface constitutive relation that characterizes the fracture and/or frictional behavior of an interface. Attention is confined to two dimensional plane stress or plane strain analyses. Issues that are addressed including limiting rupture and sliding speeds along inter...
Citation Formats
W. Taj and D. Çöker, “Dynamic Frictional Sliding Modes between Two Homogenous Interfaces,” 2017, vol. 295, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36415.
METU IIS - Integrated Information Service open@metu.edu.tr