The Mechanical Model of the Self-Guided Single-Blade Deep-Hole Reamer

2012 ◽  
Vol 452-453 ◽  
pp. 597-601
Author(s):  
Xiao Bin Huang ◽  
Xing Quan Shen
Keyword(s):  
Mechanical Model ◽  
The Self ◽  
Deep Hole

The Mechanical Model of the Self-Guided Single-Blade Deep-Hole Reamer

2012 ◽  
Vol 452-453 ◽  
pp. 597-601
Author(s):  
Xiao Bin Huang ◽  
Xing Quan Shen
Keyword(s):  
Structural Design ◽  
Mechanical Model ◽  
The Self ◽  
Cutting Conditions ◽  
Deep Hole

The structure and force of the reamers were analysed, and the mechanical model of the self-guided Single-blade deep-hole reamer was established. The fundamental basis of the structural design was expounded in theory. And analysed the Rationality which Single-blade tool and two Guide block were used. And the reamer stable cutting conditions were obtained.

Study on Technology of Restraining the Vibration of Deep-Hole Boring and the Helix Lobes

2011 ◽  
Vol 697-698 ◽  
pp. 9-12
Author(s):  
Lin Zhu ◽  
Ying Fei Nan
Keyword(s):  
Mechanical Model ◽  
Deep Hole ◽  
Forming Mechanism ◽  
Excited Vibration

On the base of studying the forming mechanism of self-excited vibration and helix lobes in deep-hole boring, the paper established a mechanical model and analysed the effect of the length of the guide pads on the vibration and stability. Moreover, the reasonable length of the guide pads was verified by the experiments of the guide pads testing.

Transient Forced Response Analysis of Mistuned Steam Turbine Blades During Startup and Coastdown

2016 ◽  
Vol 139 (1) ◽  
Author(s):  
Christian Siewert ◽  
Heinrich Stüer
Keyword(s):  
Mechanical Model ◽  
Turbine Blades ◽  
Forced Vibrations ◽  
Forced Response ◽  
The Self ◽  
Response Analysis ◽  
Computationally Efficient ◽  
Bladed Disk ◽  
Steam Turbine Blades ◽  
Number Of Publications

It is well known that the vibrational behavior of a mistuned bladed disk differs strongly from that of a tuned bladed disk. A large number of publications dealing with the dynamics of mistuned bladed disks are available in the literature. The vibrational phenomena analyzed in these publications are either forced vibrations or self-excited flutter vibrations. Nearly, all published literature on the forced vibrations of mistuned blades disks considers harmonic, i.e., steady-state, vibrations, whereas the self-excited flutter vibrations are analyzed by the evaluation of the margin against instabilities by means of a modal, or rather than eigenvalue, analysis. The transient forced response of mistuned bladed disk is not analyzed in detail so far. In this paper, a computationally efficient mechanical model of a mistuned bladed disk to compute the transient forced response is presented. This model is based on the well-known fundamental model of mistuning (FMM). With this model, the statistics of the transient forced response of a mistuned bladed disk is analyzed and compared to the results of harmonic forced response analysis.

Experimental Research on Ultrasonic Vibration Deep Hole Honing of Titanium Alloy

2011 ◽  
Vol 314-316 ◽  
pp. 1107-1111
Author(s):  
Hong Bing Zhao ◽  
Ying Fei Nan
Keyword(s):  
Surface Roughness ◽  
Titanium Alloy ◽  
Ultrasonic Vibration ◽  
Experimental Research ◽  
High Surface ◽  
The Self ◽  
Deep Hole ◽  
High Surface Roughness ◽  
Low Efficiency ◽  
Better Than

Deep hole honing is the primary way of finishing, the main problems existing now are the low efficiency, high surface roughness, especially in the processing of difficult to cut materials. In this study, the test is on the titanium alloy and uses the self-developed ultrasonic vibration honing equipment. The results show that in the same conditions, the ultrasonic vibration in deep-hole honing can improve the efficiency about 1 times, and meanwhile the surface roughness can reach below 0.8μm, the oilstone is uneasy to block, and the technical effects are better than traditional honing process.

Self-Propulsion of a Capsule on a Viscous Surface

2006 ◽  
Author(s):  
Mark McLellan ◽  
Mingxuan Fan ◽  
Z. C. Feng
Keyword(s):  
Piezoelectric Actuator ◽  
Mechanical Model ◽  
Shear Thickening ◽  
Interfacial Interaction ◽  
The Self ◽  
Experimental Setup ◽  
Interfacial Force

We propose a mechanical model for a capsule containing a piezoelectric actuator. The interfacial interaction between the capsule and a surface is assumed to be viscous. Nonlinearity in the interfacial force such as shear thickening is assumed to be present. When periodic excitations are applied to the piezoelectric actuator, the capsule is shown to propel itself. The self-propulsion is confirmed through an experimental setup.

Mechanical Model and Movement Analysis of Self-Adjusting Bolt in Converter

2014 ◽  
Vol 488-489 ◽  
pp. 1070-1073
Author(s):  
Qiang Yin ◽  
Gong Fa Li
Keyword(s):  
Stress Analysis ◽  
Dynamic Load ◽  
Mechanical Model ◽  
Movement Analysis ◽  
Mechanical Analysis ◽  
Model Analysis ◽  
The Self ◽  
Maximum Torque ◽  
Movement Model ◽  
Bolt Support

The movement model of self-adjusting bolt is built in this paper, then the kinematical and mechanical analysis is taken to determine the movement of bolt under the converters working condition.Via the mechanical model analysis of self-adjusting bolts, the load applied to the self-adjusting bolt support including the static weight load of converter and steel liquid, the tilting torque, the dynamic load produced by frequent startup, brake, impact, and the boiling of steel liquid is calculated to determine the distribution of load forcing on the three groups of the self-adjusting bolt. According to the results of stress analysis, the bolt facing tapping hole is the most dangerous when converter tilts 63°. The maximum torque is 281.5101tm.

Simulation of Suspension-Tire System Model Based on Rear Axle of Twist Beam

2010 ◽  
Vol 34-35 ◽  
pp. 1906-1910
Author(s):  
Xu Dong Wu ◽  
Shu Gang Zuo ◽  
Lei Lei ◽  
Zian Wu Yang ◽  
Yong Li
Keyword(s):  
Friction Coefficient ◽  
Mechanical Model ◽  
Rear Axle ◽  
The Self ◽  
System Model ◽  
Model Based ◽  
Excited Vibration ◽  
Exciting Source ◽  
Polygonal Wear ◽  
Lateral Friction

With the intention of researching suspension’s effect on the self-excited vibration of tire, according to the characters of polygonal wear, the twist beam suspension of car PassatB5 was simplified to proper mechanical model in the method of FEA. Then, making the coupling of lateral friction self-excited vibration of tire and draw-wrest operation of lengthways pendulum arm taking the previously built friction coefficient model into account which could cause the self-excited vibration of tire, besides the velocity of car’s driving, another exciting source could be found in this model.

Modelling of Dynamic System Characteristics of Deep Hole Drilling Process with Tools about Flexible Stifness

2014 ◽  
Vol 613 ◽  
pp. 333-339 ◽  
Author(s):  
Jarosław Zubrzycki ◽  
Antoni Świć ◽  
Marek Opielak
Keyword(s):  
Experimental Studies ◽  
The Self ◽  
Hole Drilling ◽  
Drilling Process ◽  
Deep Hole ◽  
Deep Hole Drilling ◽  
Drilling Parameters ◽  
Principal Assumption ◽  
System Characteristics

For an accepted physical model with allowance of cutting "on a trace" phenomena, the initial mathematical model for want of processing deep hole is considered. In the work has been presented principal assumption to modeling of vibrating process of deep hole drilling. To implement the process were used specially developed construction of waveguide transducer to generate the self-excited vibrations. The use of the transducer was aimed at increasing the efficiency of the process and improve the quality of performed hole. Performed model was used to process numerical researches to obtain the amplitude-phase characteristics of the drilling parameters. Then they were compared with the appropriate characteristics obtained from experimental studies.

Problem behavior in autism spectrum disorders: A paradigmatic self-organized perspective of network structures

2019 ◽  
Vol 42 ◽  
Author(s):  
Lucio Tonello ◽  
Luca Giacobbi ◽  
Alberto Pettenon ◽  
Alessandro Scuotto ◽  
Massimo Cocchi ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Problem Behaviors ◽  
Autism Spectrum ◽  
The Self ◽  
Network Structures ◽  
Self Organized ◽  
Critical Equilibrium ◽  
Self Organized Criticality ◽  
Acute Agitation ◽  
Spectrum Disorders

AbstractAutism spectrum disorder (ASD) subjects can present temporary behaviors of acute agitation and aggressiveness, named problem behaviors. They have been shown to be consistent with the self-organized criticality (SOC), a model wherein occasionally occurring “catastrophic events” are necessary in order to maintain a self-organized “critical equilibrium.” The SOC can represent the psychopathology network structures and additionally suggests that they can be considered as self-organized systems.

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