Results 1 to 10 of about 36,161 (264)

A solution algorithm for calculating the preload of T-type clamp bolts based on multiphysics coupling. [PDF]

open access: yesPLoS ONE
Under live-working conditions in distribution networks, the electric, magnetic, and thermal fields generated by current-carrying conductors inevitably affect the contact pressure between the conductor and the connecting fitting, thereby influencing the ...
Yuening Yang   +5 more
doaj   +2 more sources

Study on Preload Monitoring of Ball Screw Feed Drive System Using Natural Frequency Detection [PDF]

open access: yes한국정밀공학회지, 2018
This paper investigates the relationship between the preload level of a ball screw drive and the detected natural frequency of the system in an axial direction.
Tung Lam Nguyen   +3 more
doaj   +1 more source

Investigation of the effect of preload on the mechanical properties of fiber-reinforced geopolymer concrete [PDF]

open access: yesمهندسی عمران شریف, 2022
Concrete may be loaded at an early age for a variety of reasons. This loading can have negative and sometimes destructive effects on the hardened properties of concrete.
A. Sadr Momtazi, K. Gholipour, R. Kohani
doaj   +1 more source

Performance Evaluation of a Variable Preload Spindle by Using Linear Actuator [PDF]

open access: yes한국정밀공학회지, 2017
Bearings having a small clearance during normal operation are selected. In some cases, bearings having a negative clearance when mounted are selected, to generate internal stress which enables achieving various effects.
Dong-Hyeon Kim   +3 more
doaj   +1 more source

Analysis of Preload of Three-Stator Ultrasonic Motor

open access: yesMicromachines, 2021
The pre-pressure device of the ultrasonic motor plays a vital role in the design of the entire motor structure, the contact state of the stator and rotor of the motor, dynamic properties of the stator, friction and wear characteristics of the rotor; even
Zheng Li   +4 more
doaj   +1 more source

Perbedaan Elektrolit Plasma dan Tekanan Darah antara Preload Ringer Asetat Malat Dibandingkan dengan Ringer Laktat

open access: yesJAI (Jurnal Anestesiologi Indonesia), 2014
Latar belakang : Pemberian preload untuk mencegah hipotensi pada anestesi spinal dapat mempengaruhi keseimbangan cairan tubuh. Tujuan : Untuk melihat perbedaan elektrolit plasma dan tekanan darah antara preload RAM dibandingkan dengan RL.
Ifar Irianto Yudhowibowo   +2 more
doaj   +1 more source

Analysis of Additional Load and Fatigue Life of Preloaded Bolts in a Flange Joint Considering a Bolt Bending Load

open access: yesMetals, 2021
The influence of the working load on the dynamic loading of the bolt was investigated in our study for two cases of flange joints. The analytical calculation according to the Verein Deutscher Ingenieure (VDI) 2230 recommendation and the numerical ...
Ivan Okorn   +3 more
doaj   +1 more source

An experimental study on the rotational accuracy of variable preload spindle-bearing system

open access: yesAdvances in Mechanical Engineering, 2018
The rotational performance of the spindle-bearing system has critical influence upon the geometric shape and surface roughness of the machined parts. The effects of preload and preload method on the rotational performance of the spindle-bearing system is
Gaofeng Hu   +6 more
doaj   +1 more source

Bearing preload optimization for machine tool spindle by the influencing multiple parameters on the bearing performance

open access: yesAdvances in Mechanical Engineering, 2017
The bearing preload plays an important role on the bearing performance, particularly the important characteristics of the bearing include bearing temperature increases, the bearing fatigue life, and ball skidding.
Yanfang Dong, Zude Zhou, Mingyao Liu
doaj   +1 more source

Analyzing the Fretting Fatigue of Bolt Joints by Experiments and Finite Element Analysis

open access: yesLubricants, 2023
The appearance of fretting fatigue cracks in bolted sheets limits their lifetime. Furthermore, repairing these failures requires much effort due to needing to replace the components instead of replacing just the bolt.
Robert Szlosarek   +2 more
doaj   +1 more source

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