6 Result(s)
within
R. de Boer
Engineering
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Article
Extremum principles in the theory of plasticity for fluid-saturated porous media
For ideal plastic deformed porous solids filled up with fluid, extremum principles are formulated: a minimum principle for the velocities and a maximum principle for the stresses. These principles enable to re...
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Chapter and Conference Paper
Optimization of Vibrating Thin-Walled Structures
Thin-walled structures play an important role in structural engineering. These structures — due to the thinness of the walls — are very sensitive to external excitation which can be caused either by harmonical...
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Chapter
Plastic Behaviour of Saturated Porous Media
Porous media with empty or fluid-saturated pores play an important role in many branches of engineering, e.g., in material science, the petrol industry, chemical engineering and soil mechanics. Although porous...
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Article
Effective stresses — a clarification
Although the phenomenon of effective stresses was known for a long time, the theoretical foundation has remained unsatisfactory until now. Due to new experimental and theoretical findings in the porous media t...
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Chapter and Conference Paper
Compressible Porous Media: Toward a General Theory
The porous media theory with incompressible constituents had already come to well founded conclusions in the early stage of its development (see Fillunger, 1936). This concerns, in particular, the discovery of...
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Article
Capillarity in porous bodies: Contributions of the Vienna school and recent findings
We trace the history of research on capillarity in porous bodies led by Terzaghi and Kozeny in its early stages in Vienna. These contributions are re-examined within the framework of recent findings in the the...
