Efficient numerical method with a dual-grid scheme for contact of inhomogeneous materials and its applications

Mengqi Zhang, Ning Zhao, Zhanjiang Wang*, Q Jane Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Scopus citations


Semi-analytical models have been developed to analyze the contact of inhomogeneous materials based on the equivalent inclusion method. It is important to pursue a higher efficiency in numerical implementation of the semi-analytical models. This paper reports the development of a dual-grid computational scheme for further improving the efficiency of the current semi-analytical modeling. Parametric studies show that the new method can save at least 50% of the execution time with respect to the original algorithm in a considerably wide range of conditions. The new method is applied to investigate the influence of inhomogeneities on contact pressure distributions. Data regression is performed to obtain the amplitudes of contact pressure disturbances as a function of inhomogeneitys elastic modulus, size and location. Then, a criterion is developed based on the values of contact pressure disturbances to determine the circumstances in which the coupling between inhomogeneities and surface contact be ignored.

Original languageEnglish (US)
Pages (from-to)991-1007
Number of pages17
JournalComputational Mechanics
Issue number5
StatePublished - Nov 1 2018


  • Contact pressure disturbance
  • Inhomogeneity
  • Numerical equivalent inclusion method

ASJC Scopus subject areas

  • Computational Mechanics
  • Ocean Engineering
  • Mechanical Engineering
  • Computational Theory and Mathematics
  • Computational Mathematics
  • Applied Mathematics

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