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 20 of 67 for “"Contact mechanics"”.
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Contact mechanics modelling of articular cartilage and applications
… generally survives the lifetime of a person. The contact mechanics of the articular cartilage was investigated in this study. The contact mechanics of the cartilage surface against both rigid metallic and cartilage surfaces was investigated using finite element method. Axisymmetric and …
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Elbow Joint Contact Mechanics: Multibody and Finite Element Methods
… joint. Better understanding of elbow cartilage contact mechanics can provide a valuable insight into cartilage degeneration mechanisms and osteoarthritis development. Computational modeling is a very efficient tool that helps us gain better understanding of joint biomechanics, particularly elbow …
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Determination of TKA contact mechanics from in vivo kinematic data
Includes bibliographical references (pages 116-120).
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Gradient-stiffness hydrogel surface layers control contact mechanics and adhesion
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-12-01
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Stress Evolution on 3D Contact Mechanics under Orthotropic Friction and Wear Conditions
Failure in mechanical components under contact or rolling contact conditions usually results from the propagation of cracks generated inside the bodies by the stress state around them. Thus, the correct prediction of the life of mechanical elements requires a correct estimation of both superficial …
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A coupled contact-mechanics computational model for studying deformable human-artifact contact
… of the suit and human resulting from contact interactions is developed. This thesis details the development and validation of a coupled contact-mechanics solver architecture for use in studying the effects of human-artifact interaction, particularly with respect to pressurized softgood …
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Multi Scale Contact Mechanics of Bio-Mechanical Systems with inclusion of roughness effect- Fractal Analysis
Contact mechanics of rough surfaces and surface wear will be considered. Two types of failures are considered. The first involving rapidly growing failure and the second fatigue type surface failure as a result of repetitive application of load cycle. The first type of failure will be identified …
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Development and implementation of robust large deformation and contact mechanics capabilities in process modelling of composites
… is rather compliant. In the present work, a contact surface employing a penalty method formulation is introduced at the tool-part interface. Its material-dependent parameters are a function of temperature, degree of cure, pressure and so forth. This makes the stick-slip condition plus …
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Thermal transport across transfer printed metal-dielectric interfaces: Influence of contact mechanics and nanoscale energy transport
… using a combination of theoretical deformation mechanics and nanoscale thermal transport. We establish that the plastic deformation and the capillary forces lead to significantly large fractional areal coverage of ~0.2 which enhances the thermal conductance. At the microscopic transport scale, …
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State of the Art Roller Rig for Precise Evaluation of Wheel-Rail Contact Mechanics and Dynamics
… single-wheel roller rig for studying contact mechanics and dynamics in railroad applications. The use of indoor-based simulation tools has become a mainstay in vehicle testing for the automotive and railroad industries. In contrast to field-testing, roller rigs offer a controlled …
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The Influence of Frontal and Axial Plane Deformities on Contact Mechanics during Squatting: A Finite Element Study
… study the influence of knee deformities on knee contact mechanics and knee kinematics during squatting. A full-leg squat FE model was developed based on general open-source models and validated with in vivo studies to investigate the outputs under frontal malalignment (valgus 8° to varus 8°) and …
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Electromechanical Design and Development of the Virginia Tech Roller Rig Testing Facility for Wheel-rail Contact Mechanics and Dynamics
… intended for studying the complex dynamics and mechanics at the wheel-rail interface of railway vehicles in a controlled laboratory environment. Such measurements require excellent powering and driving architecture, high-performance motion control, accurate measurements, and relatively …
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Nonlinear Dynamics and Vibration of Gear and Bearing Systems using A Finite Element/Contact Mechanics Model and A Hybrid Analytical-Computational Model
… gear pairs are analyzed using a finite element/contact mechanics (FE/CM) model. A hybrid analytical-computational (HAC) model is proposed for nonlinear gear dynamics. The HAC predictions are compared with FE/CM results and available experimental data for validation. Chapter 2 investigates the …
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The Roles of the Normal Mechanical Properties of Articular Cartilage in the Contact Mechanics of the Human Knee Joint: a Finite Element Approach
… constituent, this thesis investigated the mechanics of human knee joint. The main hypothesis of this thesis was that the depth-wise integrity of the structure of cartilage has an important role in its mechanical performance especially its fluid pressurization. The roles of depth-dependent …
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Multi-objective design optimization of a mobile-bearing total disc arthroplasty considering spinal kinematics, facet joint loads, and metal-on-polyethylene contact mechanics
… is expected to reproduce native segmental biomechanics. Correspondingly, it would mitigate the development of adjacent segment diseases (a major concern of spinal fusion) caused by altered segmental biomechanics.</p> <p>Design optimization is a process of finding the best design parameters for …
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Nanotribology and Nanomechanics Including Nanomechanical Properties, Adhesion and Surface Roughness With Application to Magnetic Storage Hard Disk Drives
… elements was used to investigate impact-induced contact damage of Head Disk Interfaces during operational shock. A contact mechanics based analysis with consideration of mechanical properties and thickness of various sub-micron thick surface layers, effect of adhesion, effect of roughness and …
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Joint contact modelling of articular cartilage in synovial joints
… and has been extensively studied to investigate contact mechanics and tribology. It has known to experience high contact forces and stresses. However, cartilage shows remarkable lubricating and wear properties, and survives the lifetime of a person. Biphasic lubrication based on the principle of …
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Multi-Length Scale Modeling of Rubber Tribology For Tire Application
… of an automobile. It is the only means of contact between the vehicle and the road and is responsible for generating forces and moments that impact vehicle performance, stability, and control. Tire tribology is the study of interacting surfaces in relative motion which includes friction and …
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A study of fretting fatigue in aircraft components
… relevant to aircraft components. The basic contact mechanics for fretting fatigue in a sphere-plane contact geometry are reviewed. Various elastic criteria for predicting fretting failure are discussed; selected fretting maps created from one of these - the modified Crossland criterion -- …
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Analytical Modeling for Sliding Friction of Rubber-Road Contact
… in the estimation of forces generated at the contact, which further helps in optimizing tire and vehicle performances, and to estimate tire wear. It mainly depends on the material properties, contact mechanics and operating condition. There are two major contributions to rubber friction, due …
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