Plastic ratchetting as a mechanism of erosive wear

Kapoor, Ajay; Johnson, K.L.

doi:10.1016/0043-1648(95)07179-2

Cited by 37 publications

(16 citation statements)

References 7 publications

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“…This process too can be simulated as a multiple loading of a soft flat by rigid spheres. Such wear mechanism was studied by Kapoor and Johnson (1995) and Kapoor (1999) using a kinematical shakedown theorem.…”

Section: Introductionmentioning

confidence: 99%

Multiple loading–unloading of an elastic–plastic spherical contact

Kadin

Kligerman

Etsion

2006

International Journal of Solids and Structures

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A model for multiple repeated loading and unloading of an elastic-plastic sphere and a rigid flat is presented to cover a wide range of loading conditions far beyond the elastic limit. The sphere material is modeled as elastic linear isotropic hardening and follows the von Mises yield criterion. It is shown that although most of the plastic deformation occurs during the first loading, secondary plastic flow may evolve during the first unloading. The occurrence of this secondary plastic flow depends on the level of first loading and is strongly affected by the Poisson's ratio and material hardening. The region of secondary plastic flow may propagate during the very first loading-unloading cycles, reaching a steady state after which the following loading-unloading cycles become fully elastic.

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Section: Introductionmentioning

confidence: 99%

Multiple loading–unloading of an elastic–plastic spherical contact

Kadin

Kligerman

Etsion

2006

International Journal of Solids and Structures

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“…The normal angle erosion behavior is known to be different for ductile and brittle materials [11][12][13][14][15], and moreover, erosion is a complex process influenced by mechanical properties of target materials, size and geometry of impacting particles, and other parameters [15][16][17]. For ductile behavior, the material removal process under the erosion stream is usually described as the accumulation of plastic strain and fracture eventually [11][12][13].…”

Section: Discussionmentioning

confidence: 99%

“…For ductile behavior, the material removal process under the erosion stream is usually described as the accumulation of plastic strain and fracture eventually [11][12][13]. On the other hand, initiation, propagation, and intersection of cracks are responsible for material loss in the brittle erosion [14][15].…”

Section: Discussionmentioning

confidence: 99%

Influence of graphite nodules on the particles erosion of spheroidal graphite cast irons

Chang¹,

Hsui

Chen

et al. 2004

Wear

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“…the material has just plastically flowed away from the contact area. Roughness of real surfaces produces very high contact pressures at asperities which drives plastic flow and lipping on a microscopic level (Kapoor and Johnson, 1992;kapoor and Cocks, 1994;kapoor and Johnson, 1995;kapoor, 1997. in a wheel-rail contact the nominal contact pressure itself may be large enough to drive ratcheting and cause lipping.…”

Section: Wear By Ratchetingmentioning

confidence: 99%