Studying the behavior of Dhahran dune sand using 3rd invariant stress-dependent combined hardening c...

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" Studying the behavior of Dhahran dune sand using 3rd invariant stress-dependent combined hardening cap model "
I. M. Al-Buraim

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	1112379
Doc. No	:	TLpq303926195
Main Entry	:	I. M. Al-Buraim
Title & Author	:	Studying the behavior of Dhahran dune sand using 3rd invariant stress-dependent combined hardening cap model\ I. M. Al-Buraim
College	:	King Fahd University of Petroleum and Minerals (Saudi Arabia)
Date	:	1990
student score	:	1990
Degree	:	M.Sc.
Page No	:	178
Abstract	:	A three stress-invariant dependent combined hardening cap model is considered in this work to study the behavior of Dhahran dune sand. The model differes from the original cap model, primarily, in its capability to simulate the response of soil when subjected to cyclic loading. In order to assess the applicability of this model, the local sand is tested using a modified triaxial device. Using this device, it is possible to conduct cyclic triaxial tests at a constant confining pressure. Different types of triaxial tests are conducted by using this device: namely; conventional triaxial compression test, triaxial compression test (usdJ\sb1usd = constant), triaxial extension test usdJ\sb1usd = constant) and cyclic triaxial test. The results of those tests are use to determine the model prameter. The model is shown to realistically predict the soil responses under cyclic triaxial loading. The model is implemented into a two-dimensional finite element code to study the behavior of a rigid model footing resting on sand. Results indicate that the combined hardening cap model predictions agree well with the experimental observations.
Subject	:	Applied sciences
	:	Mechanical engineering
	:	Saudi Arabia