Details
| Original language | English |
|---|---|
| Pages (from-to) | 767-785 |
| Number of pages | 19 |
| Journal | International Journal for Numerical Methods in Engineering |
| Volume | 35 |
| Issue number | 4 |
| Publication status | Published - 15 Sept 1992 |
| Externally published | Yes |
Abstract
The solution of contact problems involves great numerical efforts to satisfy non‐penetration conditions. The search for numerical efficiency hence has limited the modelling of the real physical interface behaviour. Up to now mainly simple laws, usually formulated using constant coefficients, have been available to study contact problems in uncoupled from. Here a thermomechanically coupled contact element is presented which accounts for the real microscopic shape of the surfaces, the microscopic mechanism of force transmission and heat exchange. The contact element geometrical behaviour has been put together with experimental and theoretical well founded micro‐mechanical and micro‐thermal laws adapted to Finite Element Method (FEM) necessities. Based on these laws the macroscopic related stiffnesses are calculated and continuously updated taking into account changes in significant parameters. The linearization of the set of equations has been obtained using a consistent technique which implies computational efficiency.
ASJC Scopus subject areas
- Mathematics(all)
- Numerical Analysis
- Engineering(all)
- Mathematics(all)
- Applied Mathematics
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In: International Journal for Numerical Methods in Engineering, Vol. 35, No. 4, 15.09.1992, p. 767-785.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Real contact mechanisms and finite element formulation—a coupled thermomechanical approach
AU - Zavarise, G.
AU - Wriggers, Peter
AU - Stein, E.
AU - Schrefler, B. A.
PY - 1992/9/15
Y1 - 1992/9/15
N2 - The solution of contact problems involves great numerical efforts to satisfy non‐penetration conditions. The search for numerical efficiency hence has limited the modelling of the real physical interface behaviour. Up to now mainly simple laws, usually formulated using constant coefficients, have been available to study contact problems in uncoupled from. Here a thermomechanically coupled contact element is presented which accounts for the real microscopic shape of the surfaces, the microscopic mechanism of force transmission and heat exchange. The contact element geometrical behaviour has been put together with experimental and theoretical well founded micro‐mechanical and micro‐thermal laws adapted to Finite Element Method (FEM) necessities. Based on these laws the macroscopic related stiffnesses are calculated and continuously updated taking into account changes in significant parameters. The linearization of the set of equations has been obtained using a consistent technique which implies computational efficiency.
AB - The solution of contact problems involves great numerical efforts to satisfy non‐penetration conditions. The search for numerical efficiency hence has limited the modelling of the real physical interface behaviour. Up to now mainly simple laws, usually formulated using constant coefficients, have been available to study contact problems in uncoupled from. Here a thermomechanically coupled contact element is presented which accounts for the real microscopic shape of the surfaces, the microscopic mechanism of force transmission and heat exchange. The contact element geometrical behaviour has been put together with experimental and theoretical well founded micro‐mechanical and micro‐thermal laws adapted to Finite Element Method (FEM) necessities. Based on these laws the macroscopic related stiffnesses are calculated and continuously updated taking into account changes in significant parameters. The linearization of the set of equations has been obtained using a consistent technique which implies computational efficiency.
UR - http://www.scopus.com/inward/record.url?scp=0026914034&partnerID=8YFLogxK
U2 - 10.1002/nme.1620350409
DO - 10.1002/nme.1620350409
M3 - Article
AN - SCOPUS:0026914034
VL - 35
SP - 767
EP - 785
JO - International Journal for Numerical Methods in Engineering
JF - International Journal for Numerical Methods in Engineering
SN - 0029-5981
IS - 4
ER -