Results 51 to 60 of about 190 (162)
Energy Science &Engineering, Volume 14, Issue 4, Page 1935-1951, April 2026.This paper aims to provide a robust design approach for HAWTs operating in shear flow. This study fills a critical research gap by integrating BEM and vortex theories for blade design in non‐homogeneous inflow conditions. The authors of the paper made an effort to develop and test an experimentally unsophisticated model of a turbine working in shear ...
Agnieszka Dorota Woźniak +2 more
wiley +1 more source
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
Wear Modelling of the Thread Pair in a Planetary Roller Screw Mechanism
, 2022 Abstract Based on the contact characteristics of helical surfaces and the coexistence of rolling and sliding at the screw-roller interface, a forecast model of thread pair using Archard wear theory is proposed. To obtain the wear depth and the wear volume of the screw raceway in the whole effective stroke, a test rig of thread wear is developed
Shangjun Ma +4 more
openaire +1 more source
Jixie chuandongTo reveal the dynamic sliding characteristics of synchronous meshing of thread pairs and gear pairs of the planetary roller screw mechanism, a calculation method for the sliding angle of the planetary roller screw mechanism was proposed, and a numerical ...
Zhang Jianxin +4 more
doaj
Analysis of meshing characteristics of incomplete gear pair in planetary roller screw mechanism
Xibei Gongye Daxue XuebaoBased on the roller thread equation, the spur tooth profile equation, and coordinate transformation relationships, the surface equations of the incomplete gear pairs in the planetary roller screw mechanism were established.
BU Xiaokun +4 more
doaj +1 more source
Jixie chuandongObjectiveThe differential planetary roller screw mechanism is a new type of transmission mechanism in which the screw thread is meshed with the roller ring groove, as well as the mesh between the roller ring groove and the nut ring groove.
QIAO Guan +4 more
doaj
Mechanics & IndustryPlanetary roller screw mechanisms are rotation‐translation converters able to support high axial loads making them appealing for aerospace applications. Alternate loads but also rotation under constant load put a cyclic strain on the mechanism.
Lepagneul Juliette +4 more
doaj +1 more source
Design, Simulation and Multi-Objective Optimization of a Micro-Scale Gearbox for a Novel Rotary Peristaltic Pump. [PDF]
Micromachines (Basel), 2023 Rogkas N +7 more
europepmc +1 more source
Contact Analysis of EMB Actuator Considering Assembly Errors with Varied Braking Intensities
VehiclesDifferential planetary roller lead screw (DPRS) serves as a quintessential actuating mechanism within the electromechanical braking (EMB) systems of vehicles, where its operational reliability is paramount to ensuring braking safety.
Xinyao Dong +5 more
doaj +1 more source
Surface Quality Improvement by Using a Novel Driving System Design in Single-Side Planetary Abrasive Lapping. [PDF]
Materials (Basel), 2021 Chen Z, Wen D, Lu J, Yang J, Qi H.
europepmc +1 more source