Majumdar, Pradip, 1954-
M.S. (Master of Science)
Department of Mechanical Engineering
Porous materials--Thermal properties; Finite elements method; Porous materials--Moisture
Porous materials such as concrete contain large amounts of water in various forms. High temperature and /or other severe thermal conditions cause release and evaporation of significant amounts of water, inducing pore pressure and temperature gradients under which water is transported through pores. The induced pore pressure, the thermal stress due to temperature gradient, and shrinkage stress due to the release and migration of water may cause high tensile stress resulting in cracks and explosive spalling of structures. An explicit time integration finite element model is developed and implemented into a finite element program. A parametric study is carried out to conduct finite element mesh size and the associated errors. The comparison of calculations of pore pressure, temperature, free water, and released bound water between explicit and implicit integration methods is presented. The pore pressure, temperature, and moisture transport within an intensely heated concrete slab are simulated by using a computer program of finite element analysis.
Niu, Haiying, "A finite element analysis of high temperature effect on moisture transport in porous materials" (1997). Graduate Research Theses & Dissertations. 300.
xi, 94 pages
Northern Illinois University
Rights Statement 2
NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.