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Undrained Instability Response of Granular Material in Flexible Boundary Plane Strain Conditions

Year: 2025

Type: conference-paper

Abstract: Instabilities in granular materials are marked by the development of heterogeneous deformations in “single-element” experiments. However, with the onset of instability, it becomes a boundary value problem. The present study uses a flexible boundary plane-strain (FB-PS) apparatus to characterise the instability behaviour under undrained conditions. Consolidated undrained tests are performed with two different boundary conditions, i.e., flexible and mixed boundaries, to study the influence of boundary rigidity. Flexible boundary signifies employing butyl rubber flexible membranes along all sides. While in mixed boundary conditions, additional rigidity is provided along the principal loading direction (𝜎1) using thin aluminium sheets with flexible butyl rubber membranes. The initiation of instability is delayed with relatively flexible boundary conditions.

Source: IOP Conference Series Earth and Environmental Science

DOI: 10.1088/1755-1315/1480/1/012017

Authors: Sukrit Sharma, Viswanath Parol, Amit Prashant

Institutions: Indian Institute of Technology Gandhinagar, Amrita Vishwa Vidyapeetham

Language: English

Topic: Geotechnical Engineering and Soil Mechanics

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W4409317622

FWCI:

Cites: 10

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Related to: 10