Abstract
This paper presents the numerical modeling of the thermomechanical behavior of crushed salt using a viscoplastic constitutive model. In the ADINA finite element code the viscoplastic model that considers both volumetric and deviatoric strain rates under hydrostatic and shear stress conditions proposed by Hein (Hein HJ. Ein stoffgesetz zur Beschreibung des thermomechanischen Verhaltens von Salzgranulat. Dissertation, RWTH Aachen, 1991) is implemented. A series of exercises were designed to verify the numerical implementation and the theoretical formulation of the proposed model. The applicability of the model to predicting the consolidation of a crushed salt specimen with step-wise stress increase and decrease, performed in laboratory tests, is examined. Finally, a benchmark problem taking into account the interaction between crushed salt and rock salt under nuclear waste repository conditions is analyzed. The calculated temperature, porosity and compaction pressure in crushed salt correspond to a large degree with the results of other numerical codes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
