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.
Results
Showing 1 to 20 of 21 for “"Mechanical interaction"”.
-
Emergence of collective behavior and phase transition in multicellular systems through long-range mechanical interaction
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
-
Chemomechanics at the cell-material interface : measurements and implications of forced molecular unbinding
… main goal of this thesis is to study the coupled interactions between chemically and mechanically characterized materials and cells that are relevant to microvascular physiology and pathology. In particular, the mechanical characterization of cell surface structure and force generation are …
-
The effects of elevated temperature on the bond between concrete and reinforcing steel bars
… a larger programme undertaken to determine the mechanical, thermal, and time dependent property behaviour of concrete subjected to elevated temperature. A literature review covering the mechanics of bonding, viz. chemical adhesion, frictional effects and mechanical interaction is presented. …
-
Time and frequency domain modelling of the piezoelectric transducer
… effects and to clearly describe electro-mechanical interaction. The model is derived from the fundamental piezoelectric equations and it embraces the relevant practical situations where the transducer is subject to arbitrary electrical and mechanical loading. The following main features …
-
Dynamic transduction characterization of magnetostrictive actuators
… through application of an electro-magneto-mechanical impedance modeling approach which combines both the mechanical dynamics and coupled behavior of the actuator device. Lumped and continuous mechanical impedance elements model the actuator dynamics and the constitutive relationships for …
-
Ground source heat storage and thermo-physical response of soft clay
… of soft clays. This thesis evaluates the thermo-mechanical response of soft clays to seasonal heat storage and associated temperature fluctuations. A literature review reveals that, in normally consolidated to lightly overconsolidated clays, increases in soil temperature can lead to significant …
-
A selection of biomechanical research problems : from modeling to experimentation
… causes were obtained. Chapter 3 investigates the mechanical interaction between the human teeth and some processed food products during mastication, which is a routine but crucial daily activity of a human being. Chapter 4 looks at a problem within the field of surgery. In this chapter the …
-
Bioengineered Submucosa for Studying Effects of Microenvironmental Mechanics on Colorectal Cancer Cells
… cells in different directions and the sum of the interactions defines a cancer cell’s final disposition. Much has been made of the microenvironment in recent years; one hotly researched aspect is ECM mechanics. In terms of the mechanical interaction of the ECM and the cancer cell, a number of …
-
Nanocontacts controlled atom-by-atom in an ion-crystal friction emulator
Friction is the basic, ubiquitous mechanical interaction between two surfaces that results in resistance to motion and energy dissipation. To test long-standing atomistic models of friction processes at the nanoscale, we implemented a synthetic nanofriction interface between a laser-cooled Coulomb …
-
Mechanical behavior and microstructure of self-assembling oligopeptide gels
… of self-assembling peptide hydrogels is their mechanical weakness. Herein are presented computational and experimental studies that elucidate the microstructure and mechanical behavior of these materials. Strategies to enhance their mechanical properties are also examined. Steered molecular …
-
An investigation of the interfacial characteristics of nitinol fibers in a thermoset composite
… the best adhesion to the matrix due to the mechanical interaction of the matrix with the rough surface finish. Second, it was determined that the interfacial shear strength is not dependent upon embedded fiber length. Third, a very small diameter fiber will break before pulling out of the …
-
A reduced order systems approach to prediction of emergent behaviors of biological systems
… communication, cells can also communicate biomechanically through the ECM. Modeling mechanical interactions between cells and the ECM can advance understanding of biomechanical signaling during tissue formation. Observation of the mechanisms for mechanical interaction between contractile cells …
-
Aero-thermal-mechanical interactions in ultra high-speed micro gas turbines
Aero-thermal induced mechanical response of engine components in an ultra high-speed micro gas turbine engine system is assessed. Scaling down gas turbine engines for high performance requirement dictates substantial thermal-induced effects on engine operation due to high temperature gradient …
-
Theoretical modeling of the actuation mechanism in integrated induced strain actuator/substructure systems
… actuators efficiently, the mechanics of the mechanical interaction between the actuator and the host substructure must be understood and modeled accurately. A refined analytical model has been developed based on the plane stress formulation of the theory of elasticity for a surfacebonded …
-
Application of the Coupled Dipole Method for Predicting Swelling and Exfoliation Behavior of Layered Inorganic Materials
… inorganic materials is the van der Waals (vdW) interaction. The vdW force, considered to be a weak interaction in many cases, has a strong influence on the structure and properties of colloidal and nano-materials, especially the swelling and exfoliation of nanometer-thick platelets in inorganic …
-
Experimental and Computational Modelling of Tissue Rheology and Mechanics in Morphogenesis
… models designed to investigate how key cellular mechanical parameters interact with tissue material properties and active cell behaviour to drive tissue deformation in the context of biological development. Firstly, an experimental, three-dimensional tissue model is presented, which consists of …
-
An improved structural mechanics model for the FRAPCON nuclear fuel performance code
… provide improved predictions of Pellet Cladding Mechanical Interaction (PCMI) for the FRAPCON nuclear fuel performance code, a new model, the FRAPCON Radial-Axial Soft Pellet (FRASP) model, was developed. This new model uses 1.5D structural mechanics to represent both the fuel pellet and cladding …
-
Application of a Novel Quasi-3D Microscopy Technique to Investigate Early Osteocyte Mechanotransduction Events
… thesis is to observe and characterize the early mechanical and biochemical events in osteocyte mechanotransduction. Physical forces have been increasingly implicated in normal physiological and pathological cellular activities of osteocytes. The mechanotransduction process in osteocytes involves …
-
Adaptive robust interaction control for low-cost robotic grasping
… with an object to perform a grasp, the mechanical properties of the object (stiffness and damping) will play an important role. A gripper which is stable in isolated conditions, can become unstable when coupled to an object. This can lead to the extreme condition where the gripper …
-
Geomechanically coupled modelling of fluid flow partitioning in fractured porous media.
… reservoirs are characterised with complex hydro-mechanical dynamics. In these reservoirs, hydrocarbons can be stored and produced from the rock matrix, the fracture network, or both. Normally the fracture network is depleted much faster than the matrix blocks due to its increased hydraulic …
Page 1 of 2