Zero-thickness interface elements are used to model contact surfaces or potential cracks. In these cases, their elastic stiffness is often set extremely high to reproduce a rigid behavior. This paper shows that the values of the stress tractions at the nodes of these elements can be affected by an error. A new procedure is proposed here, consisting of adding some nondimensional coefficients (purely geometry-dependent) to the values of the interface stiffness parameters. Thus doing, the accurate tractions at the interface nodes are recovered.

Ciancio, D., Carol, I., Castellazzi, G. (2014). Optimal penalty stiffness values of concurrent 2D elastic interface elements leading to accurate stress tractions. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 98(5), 344-370 [10.1002/nme.4633].

Optimal penalty stiffness values of concurrent 2D elastic interface elements leading to accurate stress tractions

CASTELLAZZI, GIOVANNI
2014

Abstract

Zero-thickness interface elements are used to model contact surfaces or potential cracks. In these cases, their elastic stiffness is often set extremely high to reproduce a rigid behavior. This paper shows that the values of the stress tractions at the nodes of these elements can be affected by an error. A new procedure is proposed here, consisting of adding some nondimensional coefficients (purely geometry-dependent) to the values of the interface stiffness parameters. Thus doing, the accurate tractions at the interface nodes are recovered.
2014
Ciancio, D., Carol, I., Castellazzi, G. (2014). Optimal penalty stiffness values of concurrent 2D elastic interface elements leading to accurate stress tractions. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 98(5), 344-370 [10.1002/nme.4633].
Ciancio, D; Carol, I.; Castellazzi, G.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/531906
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