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 46 for “"Compliant Mechanism"”.
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Compliant Mechanism Suspensions
This thesis has explored the use of compliant mechanisms in vehicle suspension systems, specifically where a compliant mechanism acts as part of the wheel locating mechanism and as the energy storage element. A compliant mechanism has the potential of reducing part count, joints, and manufacturing …
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Compliant mechanism learning toolkit
… to assist in learning the behavior of complaint mechanisms. In the design of complaint mechanisms, increasingly complicated designs behave in ways that are harder to intuitively predict. This kit would allow for the rapid construction and disassembly of mechanisms with various constraint …
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Visual-based methods in compliant mechanism optimization
… to generate visual-based methods for optimizing compliant mechanisms (CMs). Visual-based optimization methods use graphical representations (3-D plots) of CM performance to convey design information. They have many advantages over traditional optimization methods, such as enabling judgment-based …
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Identification of Macro- and Micro-Compliant Mechanism Configurations Resulting in Bistable Behavior
… is to identify the configurations of several mechanism classes which result in bistable behavior. Bistable mechanisms have use in many applications, such as switches, clasps, closures, hinges, and so on. A powerful method for the design of such mechanisms would allow the realization of working …
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Design modeling and fabrication of experimental apparatus for compliant mechanism education kit
The purpose of this thesis is to design an educational kit to be used to teach practicing engineers about recent developments in the study and design of flexures. Flexure theory can be difficult to explain. This kit is a physical example of the FACT method for designing flexures. The first flexure …
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Ultra-low and wide bandwidth vibrational energy harvesting using a statically balanced compliant mechanism
… vibrational energy harvesters from the aspect of compliant mechanisms (CMs) is first carried out, focusing on the energy conversion mechanism by piezoelectric effect in particular. The frequency gap between the majority of energy harvesting devices (with narrow bandwidth in the high frequency …
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Multi-axis compliant mechanism-based nanopositioner for multi-mode mechanical testing of carbon nanotubes
… in this thesis. The nanopositioner is a compliant mechanism-based device designed that is to induce precise nanometer-level deformations in CNTs within a scanning electron microscope (SEM). The design presented in this thesis is a 4-axis prototype of a 6-axis version. The 4-axis …
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MOBILITY ANALYSIS AND TOPOLOGY SYNTHESIS OF COMPLIANT MECHANISM USING COMPLIANCE NUMBER AND PSEUDO-RIGID-BODY MODEL (PRBM)
… and understanding the kinematic properties of a compliant mechanism has been a relatively recent endeavor and has proved to be a challenging task. A concept of compliance number was offered earlier; the development of terminologies was emphasized that aided in its determination. It also …
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Design and modeling of carbon nanotube-based compliant mechanisms
… required to adapt macro- and microscale compliant mechanism theory to design carbon nanotube-based nano-scale compliant mechanisms. Molecular simulations of a nano-scale parallel guiding mechanism uncovered three regions of behavior. Region I is governed by the bulk deformation of the …
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Development of virtual reality software for the design of spatial compliant mechanisms on oculus rift device
… of some of the design guidelines for compliant mechanisms, that were challenging to implement load flow visualization method on pen and paper. Some of the challenges include the three-dimensional visualization of the truncated hemispherical band (intersection between the modified input …
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On-Chip Actuation of Compliant Bistable Micro-Mechanisms
Two compliant bistable micro-mechanisms have been developed which can be switched in either direction using on-chip thermal actuation. The energy storage and bistable behavior of the mechanisms are achieved through the elastic deflection of compliant segments. The pseudo-rigid-body model was used …
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Design and fabrication of a precision alignment system and package for a two-photon fluorescence imaging device
… of a system of ultra-fine screws and two compliant mechanisms to deamplify the motion of the screw. Finite element analysis was performed to optimize the compliant mechanisms for the desired transmission ratio of 20:1. The alignment system was fabricated and testing showed that the …
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A six-degree of freedom flexural positioning stage
… stage was constructed using a six-axis compliant mechanism driven by three two-axis electromagnetic actuators. The mechanism's monolithic, planar geometry is easily fabricated with low-cost manufacturing processes (such as waterjet machining). The manipulator tolerates ±1 mm actuator …
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Design of a Shape Memory Alloy Coil Actuated Robotic Finger with Compliant Joint Antagonists
… the development of a 3D-printable finger with compliant joints actuated by shape memory alloy (SMA) coils. This work presents the design, manufacturing, and characterization of the compliant finger mechanism, the SMA coil actuators, and an integrated prototype from analytical and experimental …
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An Investigation of Compliant Over-running Ratchet and Pawl Clutches
<p>This thesis proposes that compliant mechanism theory can be used to design over-running ratchet and pawl clutches with reduced part count, lower assembly and manufacturing time while maintaining functionality. An extension of the theory to the micro regime is also briefly addressed. The results …
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Design and Analysis of End-Effector Systems for Scribing on Silicon
… for chemomechanical scribing using a compliant mechanism solution. The end-effector is developed to scribe lines that have uniform geometry and produce less chipping on the surface of the silicon. The resulting scribing mechanism is passively controlled, has high lateral stiffness, and …
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Design, fabrication, and testing of a three-dimensional monolithic compliant six-axis nanopositioner
… for creating a three-dimensional monolithic compliant six-axis nanopositioner. Much of this work was based off of the original two-dimensional HexFlex manipulator created by Prof. Martin Culpepper and a three-dimensional design by Samuel Korb. The compliant mechanism was manufactured from a …
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Understanding frequency response of a flexural complaint stage for use in oscillatory orthogonal cutting
… in ultramicrotomy, the frequency response of a compliant mechanism must be understood. The frequency response of a complaint flexural stage driven by piezoelectric actuator was measured. Using a Linear Variable Differential Transformer (LVDT) and a dynamic signal analyzer via LabView, the …
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Topology Optimization of Nonlinear Elastic Structures and Compliant Mechanisms
… design environment in which solid structures and compliant mechanisms are synthesized. The design tool is based upon the rapidly growing research area of topology optimization which combines structural finite element analysis with nonlinear programming and design sensitivity analysis. The goal of …
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Design of a metrology & characterization system for a compliant mechanisms course
… importance of this thesis lies in the benefits compliant mechanisms give to precision engineering. The impact, by improving the quality of designs capable by professional engineers by teaching them about using FACT to design flexures, will contribute to higher quality, more agile, and more …
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