Subsurface stress evolution under orthotropic wear and frictional contact conditions

Juliá, Javier M.; Rodríguez-Tembleque, Luis

doi:10.1016/j.ijmecsci.2022.107695

Cited by 5 publications

(6 citation statements)

References 59 publications

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“…where the angle β is defined in [71] as the tribological axes' angle orientation. In the expression above, the tangential slip velocity ġt can be expressed at time τ k as follows: ġt ≈ ∆g t /∆τ (see [88][89][90]), where…”

Section: Tangential Contact Restrictionsmentioning

confidence: 99%

“…The explicit expressions of T N ij (x, y, z), T Sx ij (x, y, z) and T Sy ij (x, y, z) can be found in [71].…”

Section: Subsurface Stressesmentioning

confidence: 99%

“…The nonlinear equations' set Equations ( 1)-( 3), ( 7), ( 8), ( 14) and ( 16) was discretized and solved by using the numerical scheme presented by the authors in [71]. This allowed us to compute the contact conditions and the subsurface stresses' evolution caused by the contact-under wear conditions-on every loading and unloading cycle (k).…”

Section: Solution Schemementioning

confidence: 99%

“…The analysis of the subsurface stresses caused by any arbitrary pressure distribution was presented by Johns-Rahnejat and Gohar in [68]. The interest in the subsurface stress distributions caused by contact and how they can be affected by friction intensity [2,69,70] or wear [71] has drawn the attention of some researchers in recent years.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, this is the first time that the BEM was applied to analyze this indentation problem under these tribological contact conditions. For this purpose, the computing framework presented in [71] was extended to analyze the indentation of a flat-ended cylindrical punch over an elastic half-space. That computational scheme was based on the BEM (or ICM) [77][78][79] to obtain the influence coefficients of the contacting solids.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Wear and Subsurface Stress Evolution in a Half-Space under Cyclic Flat-Punch Indentation

Juliá

Rodríguez-Tembleque

2023

Lubricants

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Wear is a tremendously important phenomenon, which takes place on the surfaces of two solids in contact under cyclic loads and constitutes one of the most-significant ways of failure for mechanical elements. However, it is not the only source of failure in contacting solids. The subsurface stresses should also be considered, due to the fatigue and crack initiation problems. Nevertheless, these stresses (i.e., their maximum values and distributions) evolve with the solids’ surface wear (i.e., with the load cycles) and also depend on the friction intensity. Therefore, their evolution should be properly computed to predict failures in mechanical elements under wear conditions. This work focused on the study of the evolution of the surface wear and the subsurface stress distributions generated—in an elastic half-space—by a cylindrical flat-ended punch, under cyclic indentation loading (i.e., radial fretting wear conditions). Based on a numerical scheme recently presented by the authors, this is the first time that, for this contact problem, the surface wear and subsurface stress distribution (i.e., maximum value and its location)—and its evolution—were simultaneously analyzed when orthotropic friction and fretting wear conditions were considered. The studies presented in this work were developed for purely elastic contact assumptions.

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Section: Tangential Contact Restrictionsmentioning

confidence: 99%

“…The explicit expressions of T N ij (x, y, z), T Sx ij (x, y, z) and T Sy ij (x, y, z) can be found in [71].…”

Section: Subsurface Stressesmentioning

confidence: 99%

Section: Solution Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Wear and Subsurface Stress Evolution in a Half-Space under Cyclic Flat-Punch Indentation

Juliá

Rodríguez-Tembleque

2023

Lubricants

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Analytical approach to contact mechanics of functionally graded orthotropic layers with gravitational considerations

Öner,

Al-Qado

2024

Acta Mech

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Wear protection assessment of ultralow viscosity lubricants in high-power-density engines: A novel wear prediction algorithm

Blanco-Rodríguez,

Porteiro,

López-Campos

et al. 2024

Friction

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Durability and reliability have been studied for decades through intensive trial-error experimentation. However, there are numerous fields of application where the costs associated with this approach are not acceptable. In lubricated machines with severe dynamic loads, such as high-power-density engines, simulation tools offer clear advantages over intensive testing. Prototypes and multiple scenarios can be cost-effectively simulated to assess different lubricants and engine configurations. The work presented here details the study of wear based on a validated elastohydrodynamic (EHD) simulation model of the connecting rod journal bearing. This model accounts for elastic deformation through a connecting rod finite element model (FEM). In addition, multiple lubricant rheological and tribological dependences, determined by specific experimental tests, are applied in the model through their interaction with the simulation software. Correspondingly, a novel wear algorithm is proposed to predict wear depth over time evolution along a proposed wear cycle based on the typical working ranges of high-performance engines. A final assessment is presented to compare 4 different ultralow-viscosity lubricants in their protective performance under severe conditions. The results show the evolution of the wear load and wear depth over the wear cycle. This evaluation is key to describing a lubricant selection procedure for high-power-density engines.

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Subsurface stress evolution under orthotropic wear and frictional contact conditions

Cited by 5 publications

References 59 publications

Wear and Subsurface Stress Evolution in a Half-Space under Cyclic Flat-Punch Indentation

Wear and Subsurface Stress Evolution in a Half-Space under Cyclic Flat-Punch Indentation

Analytical approach to contact mechanics of functionally graded orthotropic layers with gravitational considerations

Wear protection assessment of ultralow viscosity lubricants in high-power-density engines: A novel wear prediction algorithm

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