[en] A constitutive model is developed within the framework of Perzyna's viscoplasticity for predicting the stress-strain-time behaviour of soft porous rocks. The model is based on the hyperelasticity and multisurface viscoplasticity with hardening. A time-stepping algorithm is presented for integrating the creep sensitive law. An example of application to one-dimensional consolidation is presented. The objectives are to: 1. present a soft rock model which is capable of taking into account the rate sensitivity, time effects and creep rupture; 2. to discuss the use of an incremental procedure for time stepping using large time increments and 3. to extend the finite element code Lagamine (MSM-ULg) for viscoplastic problems in geomechanics.
Disciplines :
Civil engineering
Author, co-author :
Datcheva, Maria; Bulgarian Academy of Science - BAS > Institute of Mechanics > ]
Charlier, Robert ; Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur
Collin, Frédéric ; Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur
Language :
English
Title :
Constitutive equations and numerical modelling of time effects in soft porous rocks
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Collin, F., Radu, J.-P., Charlier, R., (1998) First Development of the Mechanical Model, , PASACHALK – 1st periodic twelve-monthly progress report
Collin, F., Delage, P., Schroeder, C., Charlier, R., (2000) Geomechanical Constitutive Modelling of a Chalk Partly Saturated by Oil and Water, , EUROCK 2000 Symposium. Aachen, Germany, 27-31 March
Barnichon, J.-D., (1998) Finite Element Modelling in Structural and Petroleum Geology, , PhD thesis, Université de Liège
Van Eekelen, H., Isotropic yield surfaces in three dimensions for use in soil mechanics (1980) International Journal for Numerical and Analytical Methods in Geomechanics, 4, pp. 98-101
Charlier, R., (1987) Approche unifiée De Quelques problèmes Non linéaires De mécanique Des Milieux Continus Par La méthode Des éléments Finis, , Université de Liège. Thèse de Doctorat
Perzyna, P., Fundamental Problems in Viscoplasticity (1966) Advances in Applied Mechanics, 9, pp. 244-368
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.
