Results 181 to 190 of about 10,082 (264)

Concept, Tests, and Optimum Design of Novel Negative Stiffness Friction Dampers for Seismic Protection of Long‐Span Bridges

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Viscous dampers (VDs) are widely used to mitigate the excessive responses of long‐span bridges. However, VDs face some intricate challenges in engineering practices, including high damping coefficient requirement, potential base shear amplification and tremendous damping force under high velocity. To address these issues, this study develops a
Ruisheng Ma, Shaodong Jiang, Kun Xu, Qiang Han, Xiuli Du, Kaiming Bi   +5 more
wiley   +1 more source

Eco-Friendly Illite as a Sustainable Solid Lubricant in Calcium Grease: Evaluating Its Thermal Stability, Tribological Performance, and Energy Efficiency. [PDF]

Materials (Basel)
Steffy M, Bhaumik S, Choudhury ND, Paleu V, Florea V.   +4 more
europepmc   +1 more source

Effects of Wall‐to‐Floor Interactions on Seismic Response of Platform‐Type CLT Buildings

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Platform‐type cross‐laminated timber (CLT) buildings feature discontinuous wall segments supported by CLT floors. In practice, CLT floors are often treated as rigid diaphragm, yet the wall‐to‐floor interactions (WFIs) associated with flexibility of floors remain insufficiently investigated during seismic performance assessment.
Chaoyue Zhang, Yuxin Pan, Jiawei Chen, Huifeng Yang   +3 more
wiley   +1 more source

Investigation of the Effect of Contact Seal Geometry on Frictional Moment in Ball Bearings. [PDF]

Materials (Basel)
Zmarzły P, Wrzochal M, Rębosz-Kurdek A.   +2 more
europepmc   +1 more source

Research on Optimal Width of Coal Pillars in Both Sides of Abandoned Mining Areas and Tunnel Control Technology

Energy Science &Engineering, EarlyView.
This study primarily investigates the optimal width for coal pillar retention in both sides of the worked‐out face section. Taking the 42201 haulage roadway of the 42201 working face at Shengxin Coal Mine as the primary research target, it analyses the optimum width for coal pillar retention through theoretical calculations, numerical simulations, and ...
Shuaifeng Yin, Kanglei Han, En Wang, Yitao Yan, Xubo Zhao   +4 more
wiley   +1 more source

Calibration of physical and mechanical property parameters of broccoli seedling stalks. [PDF]

Sci Rep
Qin L, Gong Y, Zhang K, Zhang H, Wang D.
europepmc   +1 more source

Stability Evaluation and Parametric Optimization of Coal‐Concrete Composite Bearing Systems Under Mine‐Water‐Induced Deterioration: Experiments and FEINN Analysis

Energy Science &Engineering, EarlyView.
Mine‐water immersion tests reveal pronounced coal weakening (vs. minor concrete degradation), identifying coal pillars as the stability‐limiting component in composite dams. A coupled FEINN framework quantifies extreme‐pressure stability and ranks multi‐parameter designs via a normalized multi‐indicator scheme, enabling optimized dam configuration for ...
He Wen, Hongchuan Dai, Guixin Zhang, Pengzhe Li, Tong Yang, Cang Gong, Renbo Gao   +6 more
wiley   +1 more source

Twirlbot: Tumbleweed-inspired rolling robot. [PDF]

Sci Adv
Chen C, Wang Z, Wang Y, Shi P, Liu Z, Si M, Duan S, Hou W, He X.   +8 more
europepmc   +1 more source

Monolithic Framework to Simulate Fluid‐Structure Interaction Problems Using Geometric Volume‐of‐Fluid Method

International Journal for Numerical Methods in Fluids, EarlyView.
A three‐dimensional fluid‐structure interaction (FSI) framework is developed using the geometric volume‐of‐fluid (VOF) interface capturing method and applied to assess largescale turbulent FSI interactions. The monolithic FSI framework is extensively validated, and despite the discontinuities across the interface, the FSI framework delivers stable and ...
Soham Prajapati, Ali Fakhreddine, Krishnan Mahesh   +2 more
wiley   +1 more source

Reducing friction in machine oil via cesium-hybridized graphene oxide quantum dot additives. [PDF]

Sci Rep
Gomaa I, Elsoudy S, Elmahgary MG, Abdel-Rehim AA.   +3 more
europepmc   +1 more source