Results 71 to 80 of about 23,182 (263)

RESEARCH ON DYNAMICS CHARACTERISTICS OF SPUR GEAR BASED ON DYNAMIC MSEH STIFFNESS

Jixie qiangdu
The rotational speed of gear system directly affects the dynamic characteristies of gear system, but this important factor was often ignored by many scholars in the caleulation of mesh stiffness.
DAI ZhanSheng, LIU GuiMian
doaj  

Design of a Double-decker Rotating Flexible Hinge

Jixie chuandong, 2019
To increase off-axis stiffness and rotating angle, a double-decker rotating flexible hinge is designed, with straight beams and curved plates combined as the flexible body.
Zhanning Zhang, Jing Zhang, Ziming Kou
doaj  

Three‐dimensional kinematic and kinetic analysis of knee rotational stability in ACL‐deficient patients during walking, running and pivoting

Journal of Experimental Orthopaedics, 2016
Background Anterior cruciate ligament (ACL) deficiency leads to altered stability of the knee. The purpose of this study was to compare the dynamic, rotational stability of the knee, expressed as rotational stiffness, between anterior cruciate ligament ...
Marie Bagger Bohn, Annemette Krintel Petersen, Dennis Brandborg Nielsen, Henrik Sørensen, Martin Lind   +4 more
doaj   +1 more source

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

Advanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang, Temesgen Tadeyos Zate, Peiren Wang, Soumyajit Mojumder, Elo Overgaard Mogensen, Oriol Gavalda‐Diaz, Zihe Li, Shitong Zhou, Ajeet Kumar, James Roscow, Hamideh Khanbareh, Astri Bjørnetun Haugen, Florian Bouville   +12 more
wiley   +1 more source

Study on In-Plane Initial Rotational Stiffness of Eccentric RHS Beam-Column Joints. [PDF]

Materials (Basel), 2023
Guo X, Li W, Xv Z.
europepmc   +1 more source

A Thermodynamic Model of Antiferroelectics and Its Application to Electric Field Induced Antiferroelectric‐Ferroelectric Transition in PbZrO3

Advanced Functional Materials, EarlyView.
A thermodynamic model that incorporates ferroelectric, antiferroelectric, and antiferrodistortive orders of PbZrO3${\rm PbZrO}_3$ is established and parameterized based on experimental measurements and first‐principles calculations. We derive a Clapeyron‐like equation for describing the temperature‐dependence of critical electric fields for the ...
Zhiyang Wang, Guodong Zhao, Aiden Ross, Long‐Qing Chen   +3 more
wiley   +1 more source

Design and Analytical Modeling of a Unidirectional Series Elastic Actuator with Tension-Spring-Based Rotational Stiffness Mechanism

Actuators
This study proposes a tension-spring-based unidirectional rotational stiffness mechanism (TS-URM) and its implementation in a Unidirectional Series Elastic Actuator (USEA).
Deokgyu Kim, Jiho Lee, Chan Lee
doaj   +1 more source

Numerical and Experimental Analysis of the Rotational Stiffness of a Timber Semi-Rigid Dowel-Type Connection. [PDF]

Materials (Basel), 2022
Johanides M, Lokaj A, Dobes P, Mikolasek D.   +3 more
europepmc   +1 more source

Meniscus‐Guided Soft‐Lithographic Assembly of Grid‐Type Molecular Martensite Films for Single‐Crystal‐Like Actuation

Advanced Functional Materials, EarlyView.
A meniscus‐guided microtransfer molding strategy enables scalable fabrication of grid‐type molecular martensite films with b‐axis‐correlated preferential texture. Sequential growth across microchannel intersections creates structurally continuous grids and robust thermoelastic actuation (∼11% strain, > 50 cycles, maximum force density: 7.1 × 109 N m−3).
Sooyeon Ra, Sourabh R. Jagdale, Jin Hyeok Jang, Minwoo Jang, Kyoungtae Hwang, Taewoo Lee, Eun Hui Jeong, Soon Ho Yoon, Byung Joon Moon, Jangyup Son, Dong‐Su Lee, Sukang Bae, Jun Dong Park, Tae‐Wook Kim, Sangmin An, Sang Kyu Park   +15 more
wiley   +1 more source

Energy-Efficient Motion Simulation of a Bioinspired Variable Stiffness Joint Emulating Elbow Function for Periodic Tasks

Biomimetics
Inspired by the energy-efficient resonance strategy of the human elbow joint during periodic arm swing, this paper investigates the energy-saving motion and performance of a robotic variable stiffness joint.
Yapeng Xu, Kaishun Hao, Caidong Wang, Li Xiao, Wenming Wang   +4 more
doaj   +1 more source