Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Wall stiffness"”.
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Critical transitions associated with steady flow in collapsible tubes with varying wall stiffness
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1987
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Ground movements due to excavation in clay: physical and analytical models
… development of pre-excavation bending moment and wall displacement. Incremental wall deformation profiles generally followed the O’Rourke cosine bulge equation and a new deformation mechanism was proposed with respect to wall toe fixity and excavation geometry. Validation of the conservation …
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Design verification of a diaphragm wall with steel piles
… conducted to verify the design of a diaphragm wall with steel piles. The original design was based on analysis performed on a soil-structure interaction program using soil parameters calibrated in a previous study. Original and "as-built" design models were compared to measured results of the …
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Static Mechanical Characteristics of the Small Collecting Vein and the First-Order Venule in the Denervated Small Intestines of the Wistar, Wistar-Kyoto, and Spontaneously Hypertensive Rats
… The two hypotheses of this project were that (1) wall structure of a venule is a significant factor in determining distension characteristics during venous pressure elevation, and (2) venule wall stiffness is significantly increased in the spontaneously hypertensive rat (SHR).
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Multi-scale quantitative elastography and its application to blood pressure estimation
… applied to estimate noninvasively the arterial wall stiffness of a vessel as well as blood pressure. Simulation and experimental results are presented that predict the accuracy of the methods. A method is also introduced to eliminate the need for a reference pressure during the optimization over …
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Interactive design of braced excavations
… design methods can accurately predict ground and wall movement of a braced excavation, but the calculations become complex when multiple construction stages are considered, or if different design schemes are compared. This thesis presents an interactive personal computer program (called MOVEX) to …
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An investigation of lateral support systems by the finite element method
… the influence of the plastic flow rule, wall friction and the soil type on the behaviour of a cantilever support system. Subsequently, the effect of wall stiffness, prop stiffness and the application of prop loads on the performance of a multiple level support system is examined. The …
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Clinical assessment of arterial stiffness
Increased arterial stiffness is associated with ageing, cardiovascular disease diabetes and renal failure. The aims of this thesis were to investigate the reproducibility of a tissue Doppler imaging (TDI) based ultrasound system to calculate indices of arterial stiffness, and to investigate changes …
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Finite element analysis of pierced shear walls
… discrete analysis techniques applied to shear walls with openings have utilized finite elements with linear displacement fields. These elements require relatively fine meshes in order to correctly describe the reverse bending behavior of the connecting beams and to avoid an idealization for the …
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Investigation of Out-of-Plane Properties of Interlocking Compressed Earth Block Walls
… program designed to explore the behavior of ICEB walls, built according to current design practice in Indonesia and Thailand, and subjected to out-of-plane loading. A total of five reinforced and grouted ICEB walls were constructed and tested.</p> <p>Results from experimentation show the current …
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The role of brown algal cell walls in morphogenesis and development
Morphogenesis in walled organisms represents a highly controlled process by which the variability of shapes arises through changes in the structure and mechanics of the cell wall. Despite taking different evolutionary paths, land plants and some brown algae exhibit great developmental and …
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Post-earthquake assessment of damaged and repaired reinforced concrete wall buildings
… the residual capacity of moderately damaged RC walls and the effectiveness of repair techniques to restore the seismic performance of heavily damaged RC walls. The research outcome provided insights for developing guidelines for post-earthquake assessment of earthquake-damaged RC structures. The …
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Performance monitoring and numerical modelling of a deep circular excavation
… codes and standards advise to base estimates of wall deflections and ground movements on empirical data. Due to the limited number of case studies on circular excavations it is nearly impossible to find comparable projects under similar conditions. Therefore designers have to adopt conservative …