Results 221 to 230 of about 23,182 (263)
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Experimental setup for beams with adjustable rotational stiffness: An educational perspective
Computer Applications in Engineering Education, 2021AbstractIn structural analysis, the rotations of beams' supports are considered either completely fixed or completely free. Therefore, supports are idealized as fixed, pinned (hinged), or roller. In real structures, regarding rotation, the support behavior is neither fully rigid nor completely free and shows a semi‐rigid behavior in most cases. In this
Hakan T. Turker +2 more
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Rotational stiffness of shallow footings
Computers and Geotechnics, 1992Abstract The details of footing design, the soil stiffness and the soil resistance all affect the rotation characteristics of column bases of structural frames. This can have a considerable influence on structural economics (strength design), structural deflections (serviceability design) and on structural stability.
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Axial stiffness of a rotating trunnion joint
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2014A trunnion joint is modeled as a circular plate with two types of outer boundary conditions. One is clamped supported and the other is simply supported. Symmetrical bending deflection is produced when an external force acts on the inner side of the circular plate. The governing equations of the circular plate with these two kinds of boundary conditions
Sheng Feng +4 more
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Rotational Stiffness at Ridges of Timber Folded-plate Structures
IABSE Reports, 2015<p>Folded plate structures propose an efficient design employing thin Laminated Veneer Lumber panels. Inspired by the Japanese furniture joining technique, the Multiple Tab-and-Slot Joint was developed as a solution for multi-assembly of timber panels with non-parallel edges, requiring no adhesive or metal joints.
Roche, Stéphane +2 more
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Journal of Shoulder and Elbow Surgery, 2020
Stiffness and retear are 2 common complications of rotator cuff repair. McNamara et al found that postoperative stiffness was associated with lower retear rates at 6 months. This study aimed to determine if stiffness after rotator cuff repair protects the individual from retear up to 9 years after surgery.Two groups of patients, 69 with stiff and 63 ...
Christopher R, Millican +2 more
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Stiffness and retear are 2 common complications of rotator cuff repair. McNamara et al found that postoperative stiffness was associated with lower retear rates at 6 months. This study aimed to determine if stiffness after rotator cuff repair protects the individual from retear up to 9 years after surgery.Two groups of patients, 69 with stiff and 63 ...
Christopher R, Millican +2 more
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The vsaUT-II: A novel rotational variable stiffness actuator
2012 IEEE International Conference on Robotics and Automation, 2012In this paper, the vsaUT-II, a novel rotational variable stiffness actuator, is presented. As the other designs in this class of actuation systems, the vsaUT-II is characterized by the property that the output stiffness can be changed independently of the output position. It consists of two internal elastic elements and two internal actuated degrees of
Stefan S. Groothuis +4 more
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The factors affecting stiffness occurring with rotator cuff tear
Journal of Shoulder and Elbow Surgery, 2012Stiffness after a rotator cuff tear is common, and it affects postoperative prognosis. This study aims to define the factors affecting stiffness that accompanies rotator cuff tear.From June 2002 to May 2009 (84 months), 143 patients underwent arthroscopic rotator cuff repair. Of these, 119 were enrolled as subjects in this study.
Seung-Suk, Seo +4 more
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Prevention of Shoulder Stiffness after Rotator Cuff Repair
Clinical Orthopaedics & Related Research, 2005Predisposing factors for shoulder stiffness after rotator cuff repair have yet to be determined. The potential for recovery of range of motion and amelioration of pain in patients with this complication also remains unclear. Accordingly, data collected prospectively for 209 patients with a primary rotator cuff repair were retrospectively reviewed.
Kim, Trenerry +2 more
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The flexural or rotational stiffness of testing machines
Matériaux et Constructions, 1978The flexural or rotational stiffness of testing machines is defined and its significance in testing is outlined. A method of estimating rotational stiffness of machines is described.
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The Dynamic Stiffness Matrix Method in the Analysis of Rotating Systems
Tribology Transactions, 1991The dynamic stiffness method has been applied to the evaluation of the natural frequencies of rotating systems. To this purpose, a rotating “Rayleigh beam,” defined by adding the effect of the rotary inertia and the gyroscopic effects to the Bernoulli-Eider beam, has been formulated and its dynamic stiffness matrix is presented in this paper.
Curti G. +2 more
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