structural optimization of lubrication device for high

Optimization and Analysis of 24/16/8 Hybrid Excitation

lubrication and high critical speed Some researches of BSRM in optimization design mathematical modeling control strategy and non-displacement sensor control have been studied [11–21] It is found that the coupling problem of BSRM seriously affects the running performance and popularity of the motor which restricts the

Thermal stress analysis and structural optimization of

Thermal stress distribution and warpage deformation of the device after reflow loading were analyzed Based on this by adopting uniform design method and regression analysis select part of sensitivity structural parameters to optimize the device The purpose is minimizing thermal stress of

Topology Weight Load Optimization Software

Topology optimization lets you specify where supports and loads are located on a volume of material and lets the software find the best shape You can now easily perform lightweighting of structures extract CAD shapes and quickly verify the optimized design

Predicting Cavitation in Journal Bearings

Jan 30 2015To reduce the friction and wear between the fixed bearing and the rotating shaft the thin gap between these two parts is filled with a viscous fluid such as oil thus avoiding surface-to-surface contact This lubricant also damps undesirable mechanical vibrations This thin layer of fluid is referred to as the lubrication layer Its thickness

Optimization of a variable

Nov 11 2010It is important to include aerodynamic and actuation loads during the optimization of the skin stiffness distribution for application on morphing high-lift devices This is required because a more flexible skin shows significant deformations due to the aerodynamic loads thereby altering the aerofoil shape and hence the aerodynamic load of the

Topology optimization of adaptive fluid

Apr 05 2016Recently fluid/pressure-actuated cellular structures which are inspired by the nastic movement in higher plants such as the Dionaea muscipula (Venus flytrap) and Onoclea sensibilis (Mimosa) have attracted growing research interest In a manner similar to the structural characteristics of the higher plant the bioinspired smart material is commonly composed of fluid-filled isolated closed

Optimization Design and Structure Design of Precision CNC

In this paper finite element method was used to carry out parameter optimization and structural improvements of CNC machine Considering the static and dynamic characteristics of the machine the headstock and bed of CNC machine has been improved by structural optimizationk and wall ribs was designed on the headstock CNC machine tools After optimized the static stiffness and strength of

High

The irregular wear of carbon current collector pantograph strips increases the railway maintenance costs and introduces safety hazards in the railway operation This paper presents a method for analyzing the irregular wear of carbon strips with numerical dynamic analyses and modal tests The carbon strips were studied in laboratory tests and an equivalent numerical model for the investigation

Physical Modeling and Optimization of a GaN HEMT Design

parameters of the device (geometry Al mole fraction type of the field plate etc) and on-resistance together with parasitic capacitances of the device In this way it is possible to optimize the design of a switching device for a particular application which in our case is a high frequency DC DC converter for

Structural Optimization of Vibration Isolation Devices for

Structural Optimization of Vibration Isolation Devices for High Performances Silviu Nastac and Adrian Leopa T INTERNATIONAL JOURNAL OF SYSTEMS APPLICATIONS ENGINEERING DEVELOPMENT Issue 2 Volume 2 2008 66 vibration sensitive embedded equipments insulation

Research Article Multiresponse Optimization of a Compliant

optimization approach e proposed methodology has great applications for related compliant mechanisms and engineering sciences Taking bene ts of a compact structure into account CGM has a great ability for micro/nanoindentation device inside scanning electron microscope 1 Introduction Micro/nanoindentation technique now serves as an e cient

Optimization of AIN Composite Structure Based Surface

A surface acoustic wave (SAW) device with an aluminum nitride (AlN) composite structure of Al2O3/IDTs/AlN/Metal/Si was proposed for sensing at extreme high-temperature in this work Optimization allowing determination of optimal design parameters for SAW devices was conducted using the typical coupling of modes (COM) model The SAW propagation characteristics in the layered structure

Geometrical Structure Optimization Design of High

Artificially tilted multilayer thermoelectric devices (ATMTDs) are a kind of thermoelectric device that can directly convert heat into electricity based on transverse thermoelectric effect Although the devices have a simplified multilayer structure their geometrical optimization is a complicated task In this work n-type Bi2Te2 7Se0 3 and p-type Bi0 1Sb1 9Te3 materials which have the most

Physical Modeling and Optimization of a GaN HEMT Design

parameters of the device (geometry Al mole fraction type of the field plate etc) and on-resistance together with parasitic capacitances of the device In this way it is possible to optimize the design of a switching device for a particular application which in our case is a high frequency DC DC converter for

PFPE products for extreme requirements

A lubricant has to function reliably even in high or ultra-high vacuum conditions Excessive evaporation losses lead to a higher risk of lubricant starvation and are detrimental to quality due to abrasion and condensates Vacuum-resistant PFPE lubricants made by Klber Lubrication support sensitive manufacturing processes

Optimization of lubricants for silica micromotors

Mar 01 1995As the KV process seems to be well suited for microdevices lubrication we tested the influence of some structural parameters of the lubricant molecules We investigated the influence of the alkyl molecules length (C 5 C12 C18 C~) and in a second step for similar chain lengths the influence of the chemical structure of the terminal group I

Lubricant flow analysis for effective lubrication of

Apr 18 2017Owing to the high power requirements of tractors their low-power transmission gears often experience durability problems such as burning of the clutch The operation of tractors under high load conditions also causes clutch slip with the consequent longer operation duration exacerbating the burning of the friction plate Solving this problem requires effective lubricant distribution

Process optimization of a deep trench isolation structure

Dec 17 2010Process optimization of a deep trench isolation structure for high voltage SOI devices Zhu Kuiying () Qian Qinsong () Zhu Jing () and Sun Weifeng () 2010 Chinese Institute of Electronics Journal of Semiconductors Volume 31 Number 12

PFPE products for extreme requirements

A lubricant has to function reliably even in high or ultra-high vacuum conditions Excessive evaporation losses lead to a higher risk of lubricant starvation and are detrimental to quality due to abrasion and condensates Vacuum-resistant PFPE lubricants made by Klber Lubrication support sensitive manufacturing processes

Grease and Grease Lubrication – IspatGuru

Mar 27 2020Grease has poorer storage ability Too long storage can lead to separation of base oil and thickener and can also result in altered properties In case of grease lubrication grease is usually not reaching all places in need of lubrication Grease also cannot be used at the high speeds for which liquids lubricants are well suited

Adjoint

Samareh J A 2001 Survey of shape parameterization techniques for high-fidelity multidisciplinary shape optimization AIAA J 39 ( 5 ) 877 – 884 Schmidt S Schulz V 2010 Shape derivatives for general objective functions and the incompressible Navier–Stokes equations

Optimization Design and Structure Design of Precision CNC

In this paper finite element method was used to carry out parameter optimization and structural improvements of CNC machine Considering the static and dynamic characteristics of the machine the headstock and bed of CNC machine has been improved by structural optimizationk and wall ribs was designed on the headstock CNC machine tools After optimized the static stiffness and strength of

Structural Optimization of Pinning Sites for High Density

The geometrical structure of the T-shaped pinning site has been numerically optimized for high density integration of the domain wall based devices Micromagnetic simulation demonstrates the bit by bit propagation between the pinning sites with 120 nm period arraigned along a ferromagnetic nanowire with 40 nm-width and 10 nm-thickness The practical amplitude margin for pulsed fields for bit

Cutting fluid

Cutting fluid is a type of coolant and lubricant designed specifically for metalworking processes such as machining and stamping There are various kinds of cutting fluids which include oils oil-water emulsions pastes gels aerosols (mists) and air or other gases Cutting fluid are made from petroleum distillates animal fats plant oils water and air or other raw ingredients

Geometrical Structure Optimization Design of High

Artificially tilted multilayer thermoelectric devices (ATMTDs) are a kind of thermoelectric device that can directly convert heat into electricity based on transverse thermoelectric effect Although the devices have a simplified multilayer structure their geometrical optimization is a complicated task In this work n-type Bi2Te2 7Se0 3 and p-type Bi0 1Sb1 9Te3 materials which have the most

Sensors

The passive semi-strapdown roll stabilized platform is an inertial platform which can isolate the rolling of a projectile body by a special mechanical device In the passive semi-strapdown roll stabilized platform the bearing device plays an important role in isolating the rolling of the projectile body The smaller the friction moment of bearing the smaller the swing angular velocity of

Analysis of piston

Jun 13 2015Running conditions for piston pin boss bearing have become very severe due to the high combustion pressure and piston temperature increase over the past ten years The aim of this paper was to analyze the friction and lubrication characteristic of piston pin boss bearings and a connecting rod small end bearing This paper provided a comprehensive analysis of piston pin based on a multi-body

Optimization Design and Structure Design of Precision CNC

In this paper finite element method was used to carry out parameter optimization and structural improvements of CNC machine Considering the static and dynamic characteristics of the machine the headstock and bed of CNC machine has been improved by structural optimizationk and wall ribs was designed on the headstock CNC machine tools After optimized the static stiffness and strength of

Structural Optimization of Pinning Sites for High Density

The geometrical structure of the T-shaped pinning site has been numerically optimized for high density integration of the domain wall based devices Micromagnetic simulation demonstrates the bit by bit propagation between the pinning sites with 120 nm period arraigned along a ferromagnetic nanowire with 40 nm-width and 10 nm-thickness The practical amplitude margin for pulsed fields for bit

Introduction to Compliant Mechanisms and Design Methods

The intrinsic advantages associated with compliant mechanisms include their lack of a need for lubrication and assembly and their high accuracy O Bggild P : Rapid prototyping of nanotube-based devices using topology-optimized microgrippers checkerboards mesh-dependencies and local minima Structural Optimization 16(1) 68