Results 61 to 70 of about 27,598 (296)

Biomechanical assessment of lateral ulnar collateral ligament repair and reconstruction with or without internal brace augmentation

JSES International, 2020
Background: Surgical treatment of posterolateral rotatory instability (PLRI) using primary repair or reconstruction of the lateral collateral ligament complex have proven inconsistent.
Craig Melbourne, MD, James L. Cook, DVM, PhD, Gregory J. Della Rocca, MD, PhD, Christopher Loftis, MD, John Konicek, BS, Matthew J. Smith, MD   +5 more
doaj   +1 more source

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

Advanced Engineering Materials, EarlyView.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari, Supharoek Sornsomrit, Muhammad Ayaz Akbar, Stephan Rudykh   +3 more
wiley   +1 more source

Experimental and Numerical Modal Analysis of Composite Sandwich Structures Using Surfboards as Model Systems

Advanced Engineering Materials, EarlyView.
This article presents an experimental and numerical modal investigation of composite sandwich structures using surfboards as model systems. By comparing different core materials and reinforcement strategies, the study demonstrates how local stiffeners influence vibrational response and introduce characteristic modal features, highlighting modal ...
Brett Connellan, Luca Lomazzi, Mathis Mercier, Kara Stark, Marc in het Panhuis   +4 more
wiley   +1 more source

Influence of Rotational Stiffness Modeling on the Joint Behavior of Quasi-Rectangular Shield Tunnel Linings

Applied Sciences, 2020
A beam-spring model with constant rotational stiffness is a practical tool for the prediction of the general deformations and bending moments in circular tunnel linings.
Weixi Zhang, Wouter De Corte, Xian Liu, Luc Taerwe   +3 more
doaj   +1 more source

The effect of common wrist orthoses on the stiffness of wrist rotations

Journal of Rehabilitation Research and Development, 2016
Wrist orthoses (also known as splints, braces, or supports) are commonly used to support or restrict the motion of a weak or injured wrist. These orthoses generally function by stiffening the wrist joint. Therefore, choosing the proper orthosis (or improving orthoses) requires that we understand their stiffness properties.
Daniel B, Seegmiller, Dennis L, Eggett, Steven K, Charles   +2 more
openaire   +2 more sources

Initial rotational stiffness of tubular joints with axial force in chord

, 2017
In the frame analysis, the local model of the joint must follow the behavior of the joint. When completing the elastic global analysis, the initial rotational stiffness of joints should be known to obtain reliable moment distributions in frames.
Kristo Mela, Markku Heinisuo, Garifullin, Marsel, Sami Pajunen, Marsel Garifullin, Pajunen, Sami, Mela, Kristo, Heinisuo, Markku   +7 more
core   +1 more source

Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method

Advanced Engineering Materials, EarlyView.
A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley   +1 more source

Improving Rotational Stability of Radial Permanent Magnetic Bearings for Compact Rotors via Axial Offset and Optimal Sizing

IEEE Access
Permanent magnetic bearings (PMBs) provide a passive, contactless alternative to mechanical bearings, yet their inherent instability complicates their adoption in small-scale rotating machinery.
Mante Baekeland, Konstantinos Gryllias, Dirk Vandepitte   +2 more
doaj   +1 more source

Concussions in Boxers: Head Rotations and Neck Stiffness

Neurology and Neuroscience, 2021
Background: The human head-and-neck has three degrees of rotational freedom – pitch, roll, and yaw. While the evolution of the head-and-neck mobility may have increased the overall fitness of homo sapiens, our head-and-neck mobility may have also introduced some differential vulnerability to injuries in impact-induced head rotations about the pitch ...
Chiming Huang, Kimber Husak, Vaidyhanathan Vaishnavi, Rosa Huang   +3 more
openaire   +1 more source

Variable stiffness design of redundantly actuated planar rotational parallel mechanisms

, 2016
Redundantly actuated planar rotational parallel mechanisms (RAPRPMs) adapt to the requirements of robots under different working conditions by changing the antagonistic internal force to tune their stiffness.
Li, Kangkang, Jiang, Hongzhou, Huang, Qun, Cui, Zuo   +3 more
core   +1 more source