Modelling the time‐dependent behaviour of granular material with hypoplasticity. (27th May 2018)

• Record Type: Journal Article
• Authors: Wang, Shun; Wu, Wei; Yin, Zhen‐Yu; Peng, Chong; He, Xuzhen
• Editors: Ronaldo, Borja
• Is Part Of: International journal for numerical and analytical methods in geomechanics. Volume 42:Number 12(2018)
• Page Start: 1331
• Page End: 1345
• Publication Date: 2018-05-27
• Subjects: creep -- critical state -- granular material -- hypoplasticity -- rate dependent -- strain acceleration; Soil mechanics -- Mathematics -- Periodicals; Rock mechanics -- Mathematics -- Periodicals; 624.1510151
• DOI: 10.1002/nag.2793
• Languages: English
• ISSNs: 0363-9061

Abstract

Summary: This paper presents a constitutive model for time‐dependent behaviour of granular material. The model consists of 2 parts representing the inviscid and viscous behaviour of granular materials. The inviscid part is a rate‐independent hypoplastic constitutive model. The viscous part is represented by a rheological model, which contains a high‐order term denoting the strain acceleration. The proposed model is validated by simulating some element tests on granular soils. Our model is able to model not only the non‐isotach behaviour but also the 3 creep stages, namely, primary, secondary, and tertiary creep, in a unified way.