Numerical optimization of texture shape for parallel surfaces under unidirectional and bidirectional sliding

Shen, Cong; Khonsari, M. M.

doi:10.1016/j.triboint.2014.09.022

Cited by 130 publications

(71 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the same note, as the effect of geometric shape and orientation of the dimple is of the main focus of the paper, study of a single dimple is considered for the sake of computational simplicity and for the ease of parametric study. Similar consideration is adopted by other researchers …”

Section: Methodssupporting

confidence: 62%

“…In addition, five point staggered finite difference method employed is found to give a reasonable accuracy in estimating the value of function (e.g. film pressure, film thickness) by taking neighbouring points around the central point into account, and is widely used in many numerical analyses, in which, the film pressure gradient and thickness in hydrodynamic lubrications are computationally studied and validated . However, it is to be noted that while the finite difference approach by considering more neighbouring points such as 9 or 11 would approximate the function accurately, the computational cost in terms of higher number of iterations to achieve the convergence would significantly be high.…”

Section: Methodsmentioning

confidence: 99%

“…Starting with an arbitrary shape with the aid of sequential quadrilateral programming, Shen and Khonsari studied the optimisation of the texture shape under unidirectional and bidirectional sliding and found that the optimum shape for unidirectional and bidirectional sliding becomes the chevron and the trapezoid‐like shapes, respectively, and provides a greater load carrying capacity (i.e. the film pressure), as compared to the regular shapes, e.g.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of surface texture shape, geometry and orientation on hydrodynamic lubrication performance of plane‐to‐plane slider surfaces

Uddin

Ibatan

Shankar³

2016

Lubrication Science

View full text Add to dashboard Cite

This paper investigates the effect of surface texturing on the tribological performance of hydrodynamic slider surfaces. The geometric parameters of the texture considered were the texture shape, bottom profile, orientation and depth. A theoretical model based on the steady‐state Reynolds equation was solved numerically by finite difference method to analyse the effect of surface texturing. The optimum geometry of each texture shape was determined, for which, the film thickness was maximised and the friction coefficient was minimised. Among all the shapes, the square with a single wedge bottom profile outperformed. The performance of the triangle, the chevron and the ellipse was highly influenced by their orientation with respect to the sliding direction. Texture density was found to be more dominant in impacting the tribological performance than the texture aspect ratio. The results obtained were further discussed with respect to the studies available in literature to emphasise the significance of the findings. Copyright © 2016 John Wiley & Sons, Ltd.

show abstract

Section: Methodssupporting

confidence: 62%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of surface texture shape, geometry and orientation on hydrodynamic lubrication performance of plane‐to‐plane slider surfaces

Uddin

Ibatan

Shankar³

2016

Lubrication Science

View full text Add to dashboard Cite

show abstract

“…One advantage of existing design studies is their ability to address the problem directly through a complete mesoscale analysis in the lack of a clear scale separation that is necessary for the application of the homogenization theory . Another advantage is that, considering the large number of design variables that are typically needed in topology optimization, they can restrict the design space to achieve optimal designs in a numerically more efficient manner . On the other hand, an ability to endow interfaces with very finely distributed intricate geometries using modern manufacturing methods provides an opportunity to question and explore the possibilities of unrestricted microscopic interface geometry design via homogenization‐based topology optimization.…”

Section: Introductionmentioning

confidence: 99%

Microscopic design and optimization of hydrodynamically lubricated dissipative interfaces

Çakal

Temizer

Terada

et al. 2019

Numerical Meth Engineering

View full text Add to dashboard Cite

Summary A homogenization‐based topology optimization framework is developed, which can endow hydrodynamically lubricated interfaces with a micro‐texture, to achieve optimal macroscopic responses by addressing both dissipative and nondissipative physics at the interface. With respect to the homogenization aspects of the problem, the thermodynamic consistency of the two‐scale formulation is explicitly analyzed and verified. With respect to the topology optimization aspects, a variational approach to sensitivity analysis is pursued. Subsequently, these are employed in micro‐texture design studies, which address microscopic and macroscopic objectives. The influence of dissipation on the optimization results is demonstrated through extensive numerical investigations, which also highlight the importance of working in a sufficiently flexible design space that can deliver nearly optimal micro‐texture geometries.

show abstract

“…Although relevant MICOO studies have assigned the micro-texture some degree of flexibility in shape (Fesanghary and Khonsari 2011;Shen and Khonsari 2015;Zhang et al 2017), a homogenization-based topology optimization framework has been realized only recently in Waseem et al (2016). Based on the capabilities developed therein, the MACOO framework to be developed presently will address two key features of multiscale hydrodynamic lubrication problems that are non-standard, in the sense that two-scale material optimization problems typically do not display them.…”

mentioning

confidence: 99%

Micro-texture design and optimization in hydrodynamic lubrication via two-scale analysis

Waseem

Temizer

Kato

et al. 2017

Struct Multidisc Optim

View full text Add to dashboard Cite

A novel computational surface engineering framework is developed to design micro-textures which can optimize the macroscopic response of hydrodynamically lubricated interfaces. All macroscopic objectives are formulated and analyzed within a homogenization-based two-scale setting and the micro-texture design is achieved through topology optimization schemes. Two non-standard aspects of this multiscale optimization problem, namely the temporal and spatial variations in the homogenized response of the micro-texture, are individually addressed. Extensive numerical investigations demonstrate the ability of the framework to deliver optimal micro-texture designs as well as the influence of major problem parameters.

show abstract

Numerical optimization of texture shape for parallel surfaces under unidirectional and bidirectional sliding

Cited by 130 publications

References 28 publications

Influence of surface texture shape, geometry and orientation on hydrodynamic lubrication performance of plane‐to‐plane slider surfaces

Influence of surface texture shape, geometry and orientation on hydrodynamic lubrication performance of plane‐to‐plane slider surfaces

Microscopic design and optimization of hydrodynamically lubricated dissipative interfaces

Micro-texture design and optimization in hydrodynamic lubrication via two-scale analysis

Contact Info

Product

Resources

About