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Thermal characteristics analysis of machine tool spindle with adjustable bearing preload
The spindle is the key functional part of the machine tool, and the thermal deformation caused by the heat generation of the bearing seriously...
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The effect of preload on the impact behavior of laminated and sandwich composites
The objective of this study is to conduct a comparative analysis of the influence of preload and impact energy levels on the impact response of...
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Methodology for the assessment of the friction torque of ball slewing bearings considering preload scatter
This manuscript presents an innovative methodology for the assessment of the friction torque of ball slewing bearings. The methodology aims to...
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Effects of deformations and angular ring misalignment on dynamic properties for ball bearing under different preload mechanisms
In this paper, a comprehensive model of ball bearing considering deformations and angular ring misalignment is proposed to investigate the bearing...
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Thermal error prediction model of a motorized spindle considering variable preload
To predict the thermal error of the motorized spindle during machining and improve the accuracy of the error compensation system of the motorized...
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Centrifugal Model Tests on Soil Behavior During Preload Removal from Ground Improved with Vertical Drains
Vertical drain method with preloading is one of the typical soft ground improvement technologies. When a preload is removed before completion of the...
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Effect of preload force on heat generation of fatigue crack in ultrasonic infrared thermography
The heat generation behaviors of fatigue crack are deeply investigated under different preload forces combing numerical simulation and experiment....
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Dynamic Modeling and Stability Analysis of the Rod-Fastening Rotor System with the Different Preload Status
With the development of gas turbine technology, disk-distributed rod-fastening combined rotor systems are widely used in power machines such as...
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Research of Threaded Connection In-Situ Preload Measurement
Bolt connection in-situ measurement refers to the field measurement of bolt preload without changing the original bolt connection state. At present,...
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A modeling method for predicting friction torque of the preload double-nut ball screw based on thermal elastohydrodynamic lubrication
Ball screw has become a key functional component commonly used in actuators of high-end machine tools because of its high transmission efficiency,...
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A Novel Approach for Preload Monitoring in Bolted Connections Using Electro-Mechanical Impedance Spectra
The functionality of bolted connections depends significantly on the conservation of the bolt’s preload, which entails the necessity to monitor these...
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Preload control of the increased outflow of a dual pulsatile extracorporeal membrane oxygenator
An improved pulsatile extracorporeal membrane oxygenation (ECMO) device is needed to reduce the high risk of complications associated with existing...
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Research on thermal stiffness of machine tool spindle bearing under different initial preload and speed based on FBG sensors
As a key parameter, stiffness determines the dynamic characteristics of both the bearing and the spindle unit. However, interactions between the...
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Research on the Influencing Factors of Axial Preload Performance of Aluminum Alloy Thread
The model of thread connection preload is set up and the main factors affecting the performance of thread axial preload are analyzed theoretically....
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A Novel Contactless Bolt Preload Monitoring Method Using Digital Image Correlation
Bolt preload is a critical parameter in bolted connections with a strong influence on their general structural behavior. Traditional bolt preload...
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Experimental and Numerical Study on the Nonlinear Behavior of Strengthened Beams Under High Preload
The behavior of the H-beam strengthened with welded T-beam is tested and simulated to investigate the nonlinear behavior of flexural members...
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Fatigue life prediction of the preload double-nut ball screw under mixed lubrication
As an important precision transmission functional component in industrial fields such as large mechanical equipment, high-speed CNC machining center,...
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Quantitatively Decoupling the Impact of Preload and Internal Mechanism Motion on Pyrotechnic Separation Shock
Pyrotechnic separation devices are widely used in space separation systems. However, these devices produce high-frequency, high-amplitude shock...
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Preload state detection for precision spindle bearings based on multi-level classification
In this study, a multi-level state classification method based on support vector data description (SVDD) is proposed to detect bearing preload state....
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Static Balance of a Flexure-Based Four-Bar Mechanism: Less Torque with More Preload
Static balance eliminates the inherent actuation stiffness of flexure-based mechanisms. In this paper we investigate how, and under which conditions,...