Abstract
The detailed discretization of contact zones with contact stiffness based on real physical characteristics of contact surfaces can produce stiffness terms which induce ill-conditioning of the global stiffness matrix. Moreover the consistent treatment of frictional behaviour generates non-symmetric tangent stiffness matrices due to the non-associativity of the slip phase. Other non-symmetries are due to the coupling terms and to the dependencies on various parameters that can be involved. To overcome these difficulties almost consistent techniques based on two-step algorithms have been proposed in the past. Here an augmentation technique is proposed which takes into account micro-mechanical effects, and permits the symmetrization of the tangent stiffness during frictional slip phase.
Original language | English (US) |
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Pages (from-to) | 2929-2949 |
Number of pages | 21 |
Journal | International Journal for Numerical Methods in Engineering |
Volume | 38 |
Issue number | 17 |
DOIs | |
State | Published - Jan 1 1995 |
Keywords
- augmentation
- contact
- friction
- thermomechanical coupling
ASJC Scopus subject areas
- Numerical Analysis
- Engineering(all)
- Applied Mathematics