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

A numerical optimization approach based on the sequential quadratic programming (SQP) algorithm is used to determine the optimum texture shape for generating the highest load-carrying capacity (LCC). A benchmark problem is first solved to validate this optimization method. Then the novel texture sha...

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Vydáno v:Tribology international Ročník 82; s. 1 - 11
Hlavní autoři: Shen, Cong, Khonsari, M.M.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Ltd 01.02.2015
Témata:
Algorithms
Bidirectional
Cavitation and mass-conservative algorithm
Load-carrying capacity
Mathematical models
Optimization
Shape optimization
Sliding
Surface layer
Surface texture
Texture
Tribology
Surface texture
Load-carrying capacity
Shape optimization
Cavitation and mass-conservative algorithm
ISSN:0301-679X, 1879-2464
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Shrnutí:A numerical optimization approach based on the sequential quadratic programming (SQP) algorithm is used to determine the optimum texture shape for generating the highest load-carrying capacity (LCC). A benchmark problem is first solved to validate this optimization method. Then the novel texture shapes which produce the maximum LCC for both unidirectional and bidirectional sliding motion are proposed and analyzed. For unidirectional sliding the optimum textures have chevron-type shapes with flat fronts and for bidirectional sliding they consist of pairs of the trapezoid-like shapes. Finally, the performances of optimum shapes are compared with those of regular shapes using a mass-conservative algorithm. •A numerical method for the shape optimization of surface textures is proposed.•Optimum textures for unidirectional sliding have chevron-type shapes with flat fronts.•Optimum textures for bidirectional sliding consist of symmetric trapezoid-like shapes.•Optimum textures can greatly enhance the load-carrying capacity.
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ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2014.09.022