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Showing 1 to 13 of 13 for “"bolted joint"”.
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Bolted joint studies in GRP
Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Sciences & Engineering, 1994.
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Development of a Self-Sensing and Self-Healing Bolted Joint
A self-sensing and self-healing bolted joint has been developed. This concept encompasses the areas of health monitoring, joint dynamics and smart materials. In order to detect looseness in a joint the impedance health monitoring method is used. A new method of making impedance measurements for …
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Low cycle fatigue life improvements realized by reduced thermal strain due to flange separation in bolted joints
… challenging designs to model accurately is the bolted joint. Bolted joints are critical in aircraft engines as they connect parts and transfer loads. In complex joints, modeling can be difficult and is often simplified with the use of conservative assumptions. Recent commercial experience on …
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Nonlinear axial stiffness characteristics of axisymmetric bolted joints
… assessment of the current design theory for bolted joints which is based on a linear, one-dimensional stiffness analysis is presented. A detailed nonlinear finite element analysis of a bolted joint conforming to ANSI standards was performed. The finite element results arc presented in the …
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Shear fatigue of adhesively bonded frictional interfaces in high-strength steel
… model relevant for the design of bonded/bolted hybrid joints in high-strength steel plates subjected to cyclic shear loading. Hybrid joints can have improved fatigue endurance as compared to welded connections of similar geometries but, thus far, adequate research data has not been …
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Parametric modeling of bolted joints between components made of particulate composite materials
… the stress distributions around the hole in a bolted joint made of particulate metal matrix composite and to investigate the associated load transfer efficiencies both for a single and double lap bolted joints. A three dimensional Finite Element parametric model has been developed to study the …
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Parametric analysis of bolted flange connections of circular monopoles.
… study involved the parametric analysis of bolted flange connections of eighteen different circular monopoles. The parameters considered were the number of bolts (8, 6, and 4) and thickness of flange plate [25.4 mm (1.0 in.), 19.05 mm (0.75 in.) and 12.7 mm (0.50 in.)]. These were analyzed …
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Semi-rigid joints for moment-resisting steel framed seismic-resisting systems
… describes the development of new semi-rigid joints for moment-resisting steel framed (MRSF) seismic-resisting systems. Intended as the weak link in the seismic-resisting system, in accordance with a strong column, weak joint philosophy, the joints and systems were designed and detailed to …
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Design and Evaluation of a Quasi-Passive Variable Stiffness Ankle-Foot Prosthesis to Improve Biomechanics Across Walking Speeds
… stress analysis, fatigue life calculations, and bolted joint analysis. The benchtop testing results demonstrate that the device successfully achieves the targeted stiffness range, device mass, and structural integrity. A study was conducted with 7 participants with unilateral transtibial …
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Analysis of the sensing region of a PZT actuator-sensor
… Energy dissipation mechanisms, such as bolted connections and internal friction, are considered to have a major role in the attenuation of the PZT's induced wave, therefore these mechanisms has been extensively studied. To analyzed bolted connections, linear and nonlinear joint models …
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CONTACT PRESSURE MEASUREMENT
The knowledge of the correct clamping force in a bolted joint is important in the prevention of leakage and in extending the life span of the joint. One of the methods to tighten the joints to the correct clamping force would be to use torque wrenches but this and other techniques do not indicate …
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Metodología para caracterizar materiales cfrtp, para su aplicación en elementos estructurales amortiguadores y anti-vibratorios de automoción
… dynamic properties required - Are suitable for bolted joints applications Samples made of CFRTP adhesived with vulcanized rubber were manufactured under the same conditions of current rubber-metal parts. The samples were tested under tensile and shear strength destructive tests in order to …
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Design of High-Performance, Dual-Motor Liquid-Cooled, Linear Series Elastic Actuators for a Self-Balancing Exoskeleton
… elastic actuators were utilized to power the joints on the exoskeleton. This thesis details the development of four linear series elastic actuators (LSEA) as part of this project. All 12-degrees of freedom will be powered by one of these four LSEA's. Actuator requirements were developed by …