Results 91 to 100 of about 7,908,720 (297)

On triply coupled vibrations of axially loaded thin-walled composite beams [PDF]

, 2010
Free vibration of axially loaded thin-walled composite beams with arbitrary lay-ups is presented. This model is based on the classical lamination theory, and accounts for all the structural coupling coming from material anisotropy.
Lee, Jaehong, Vo, Thuc, Lee, Kihak
core   +1 more source

On the Impact Torsional Test by Means of a Dropped Bar

Transactions of the Japan Society of Mechanical Engineers, 1978
In the present paper we describe the impact torsional stress of a circular bar supported horizontally and subjected to impact torsion, when a cross pin attached to the end of it was struck by a dropped bar. Stresses obtained by experiments were in good agreement with those by one dimensional theory except for the short time after the impact.
CHATANI, Akiyosi, HOJO, Akihiro
openaire   +3 more sources

Biohybrid Crawling Robot With Spiral‐Spring Backbone and Inclined Legs for Enhanced Locomotion

Advanced Materials, EarlyView.
We present a biohybrid crawling robot integrating a muscle ring with a flexible skeleton combining two complementary structural elements. The spiral‐spring backbone enables large‐amplitude bending without compromising axial stability, while outward‐inclined legs with unequal front–rear lengths effectively convert deformation into directional strides ...
Tomohiro Morita, Minghao Nie, Shoji Takeuchi   +2 more
wiley   +1 more source

Framework Flexibility on Water Sorption and Transport in ZIF‐90: Insights from Neural‐Network Molecular Dynamics

Advanced Materials Interfaces, EarlyView.
A DeepMD‐based molecular dynamics framework is developed to investigate water adsorption in ZIF‐90, explicitly accounting for framework flexibility. Results show that atomistic flexibility significantly influences adsorption energetics, diffusion, and structural correlations, yielding nearly constant heat of adsorption and enhanced mobility.
Nick Mackus, Ionut Tranca, Veerapandian Ponnuchamy, Silvia Gaastra‐Nedea   +3 more
wiley   +1 more source

Working Characteristics of Mechanical Composite Impactor

Shiyou jixie
Conventional impactor works with hydraulic impulse,which may induce erosion to impact the working life of the impactor.To this end,a mechanical lifting and disc spring energy storage impact method was proposed and a mechanical composite impactor was ...
Sun Yangqing, Yi Xianzhong, Wan Jifang, Yi Jun, Wu Jiwei, Diao Binbin, Chen Zhixiang   +6 more
doaj  

Dental Microwear Texture Analysis on Radular Teeth

Advanced Materials Interfaces, EarlyView.
3D microwear textures reveal how gastropod radular teeth respond to controlled abrasive contact. Distinct surface signatures distinguish regular abrasion from fracture‐dominated material removal, showing how mineralized coatings, fibrous cores, and substrate properties jointly shape wear and failure in a biological scraping interface.
Wencke Krings, Stanislav N. Gorb, Ellen Schulz‐Kornas   +2 more
wiley   +1 more source

Reactive Power Control Impact on Torsional Oscillations in GFM-DFIGs: Analysis and Mitigation

IEEE Open Journal of Power Electronics
Recent studies have highlighted potential torsional stability risks in grid-forming (GFM) controlled wind turbine (WTs). While most research focuses on the active power control channel, the influence of reactive power control (RPC) is rarely concerned ...
Dong Wang, Yunhui Huang, Xin Liu, Xiangtian Deng, Keliang Zhou   +4 more
doaj   +1 more source

Deep Eutectic Solvent‐Enhanced PEDOT: PSS/NR Foam Piezoresistive Sensor for High‐Sensitivity Wearable Devices and Sleep Monitoring Applications

Advanced Materials Interfaces, EarlyView.
A high‐performance piezoresistive foam sensor is developed by integrating natural rubber, PEDOT: PSS, and a deep eutectic solvent (DES). DES effectively detaches insulating PSS from PEDOT, dramatically amplifying electrical conductivity and sensitivity.
Shun Zhang, Jizu Ma, Peng Yu, Lei Tan, Yan Xu   +4 more
wiley   +1 more source

Strain‐Activated Mechanical Metamaterial With Programmable Dual‐Phase Stiffness and Enhanced Energy Absorption

Advanced Materials Technologies, EarlyView.
A strain‐activated mechanical metamaterial is developed to achieve programmable dual‐phase stiffness through an intrinsic geometric locking mechanism. Finite element modeling and parametric analysis identify the key design parameters governing activation strain, stiffness transition, and energy absorption.
Ramin Yousefi‐Nooraie, Romain Lemoine, Mario Guagliano, Sara Bagherifard   +3 more
wiley   +1 more source

Structural Design and Performance Analysis of Novel Torsional Impact Tool

Shiyou jixie, 2017
The existing impact and rotary-impact rock breaking technology mostly use the axial impact and the shear action of the PDC bit to achieve high-efficiency rock breaking, but excessive axial force will cause the failure of PDC bit shear force, resulting in
Fu Chuanhong, Chen Zhiqiang, He Yong, Wei Daifeng, Liu Kaiquan, Hu Jing   +5 more
doaj