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The Application of Meta Functions to the Quasi-Static …

This paper presents a general model for the quasi-static analysis of workpiece displacement. It also shows how meta functions can be applied to simplify the modeling of contact forces. Through the use of meta functions, the general model can be formulated and solved quickly.

Static, quasi-static and dynamic properties: How is each …

The quasi-static state is the analogue of the static state, when the acting forces are not depend to speeds of loading or the duration of action of loading. Approximately we can take it when v<<c.

A triple-wafer-bonded AlScN driven quasi-static MEMS …

In the previous work a quasi-static MEMS mirror with a novel design and powerful piezoelectric driving material of AlScN was shown, which possesses large mechanical tilt angles of up to ±12.5, high frequency of about 1 kHz, high fill-factor (aperture diameter is 0.8 ...

[PDF] Investigation on the Dynamics of Tool Grinding | …

 · The manufacturing of high-performance carbide tools, like drills or milling cutters, is realized by a grinding process because of the strength and hardness of the used material. Due to the process forces and the cantilevering clamped workpiece, the blank bends and unwanted geometry errors occur. Additionally, great efforts are made to find optimal parameters for stable process conditions. In ...

[PDF] Dissertation title: Adaptiv process control of the …

@inproceedings{Xu2017DissertationTA, title={Dissertation title: Adaptiv process control of the quasi-static process load of gear grinding}, author={Y. Xu}, year={2017} } Y. Xu Published 2017 The gear grinding is subject to numerous influencing variables, which ...

High Strain Mechanics and Its Importance in Crushing and Grinding Technology

static loading. This suggests that quasi-static loading is controlled in part by the macro-defects since fracturing would start first with macro-fractures as the load moves through the rock.

Dynamic and quasi-static signal separation method for …

The quasi-static strain of the bridge subjected to ambient traffic loads has a lower frequency but larger contribution than the natural frequencies of the bridge. 27 Setting the first order frequency of the bridge as the threshold, 28 we can extract the quasi-static

22 Quasi-static Guiding synonyms

Quasi-static Guiding synonyms. Top synonyms for quasi-static guiding (other words for quasi-static guiding) are quasi static, guiding force and static guiding force.

MacSphere: A Pneumatic Sensor for Grinding Wheel …

While these sensors are traditionally used to measure displacement of static or quasi-static surfaces, research into dynamic applications has shown they can detect the features or topography of a …

Grinding-Induced Stress | Scientific

Journal of Biomimetics, Biomaterials and Biomedical Engineering

Chatter in a transverse grinding process — The University …

In transverse grinding, the wheel moves along the workpiece, which induces unique grinding dynamics. To understand these dynamic phenomena, specifically the grinding chatter, a new dynamical model of the process is proposed, in which the wheel position is assumed to be quasi-static since the transverse wheel velocity is small.

Influence of a Retaining Ring on Strain and Stress in the …

In this article, a two-dimensional axisymmetric quasi-static finite element wafer scale model for chemical mechanical polishing (CMP) process involved in the wafer carrier, the

Numerical simulation study of quasistatic grinding …

Numerical simulation study of quasistatic grinding process on a model granular material Author(s) J.-N. Roux, V. P. B. Esnault Publisher American Institute of Physics Source POWDERS AND GRAINS 2013: Proceedings of the 7th International Conference on

Quasi-Static Analyses

quasi-static solution. –The kinetic energy of the deforming material should not exceed a small fraction of its internal energy throughout the majority of a quasi-static analysis. •A small fraction typically means 1–5%. –It is generally not possible to achieve this in

DEFINE QUASI-STATIC OR QUASI-EQUILIBRIUM PROCESS

Quasi static process. When a process is processing in such a way that system will be remained infinitesimally close with equilibrium state at each time, such process will be termed as quasi static process or quasi equilibrium process.

Comparison of Static and Dynamic Hardness of …

The other method is quasi-static, and capable of yielding a more complete picture in research studies of grinding-wheel hardness through statistical analysis of the results obtained. It would appear that both methods represent a distinct step forward in grinding-wheel technology and that each is of value in its own sphere of application.

Static, quasi-static and dynamic

Sa good example for a quasi-static problem is when a slope is subjected to earthquake loading. Since the deformation happens slowly we can analyze it with quasi-static approach. To do this, we consider a horizontal additional force in the equilibrium of forces instead of the exact loading of earthquake.

newtonian mechanics

In physics, statics is the subset of physical systems for whom all forces balance, i.e., systems that do not accelerate. Dynamics is the calculation of acceleration. When you stick the prefix "quasi" onto something, you often mean it is nearly enough that thing

SIMILARITIES AND DIFFERENCES IN MICRODAMAGE MECHANISMS DURING TENSILE QUASI-STATIC …

2.2. Quasi-static loading Tensile tests with displacement rate 2mm/min were performed at room temperature and carried out on an Instron 3366 universal testing machine (Instron, America) equipped with a load cell of 10 KN and pneumatic grips. During the

Quasi Static Test

The quasi-static cyclic tests can be used to conduct both basic and proof tests. In quasi-static tests, loads and/ or displacements are applied at slow rates. Normally, such types of tests are carried out to study structural performance of structures and structural members such as the rate of propagation of cracks, hierarchy of collapse and associated levels of damage, etc.

What''s the different between quasi-static and dynamic …

Quasi-static load means the load is applied in slow rate like static load (very low strain rate). A dynamic load, causes a structure to vibrate and the inertia force is considered. Cite

Laboratories

The low-load nanoindentation system enables mechanical characterization of thin films, biological materials and nanomaterials in a quasi-static and dynamic mode with a …

Chatter in a transverse grinding process

In transverse grinding, the wheel moves along the workpiece, which induces unique grinding dynamics. To understand these dynamic phenomena, specifically the grinding chatter, a new dynamical model of the process is proposed, in which the wheel position is assumed to be quasi-static since the transverse wheel velocity is small. From the stability and bifurcation analyses of the chatter ...

Quasi-Isostatic Pressing Technique for Powdered …

A simple and economical method of quasi-static pressing, based on standard hydraulic or mechanical pressure molding facilities, is developed. The pressurizing medium for conveying isostatic uniform pressure is an elastic synthetic rubber. A technology for pressure molding of powdered materials into a wide range of engineering components is developed.

Constable & Smith :: Powder Flow 2021

For instance, powder flow from small containers with low level of consolidation stress (typically less than 200 Pa) under quasi-static conditions may significantly differ from the flow characteristics at large scales, relatively high stress levels and dynamic conditions.

3D numerical simulation study of quasistatic grinding …

3D numerical simulation study of quasistatic grinding process on a model granular material Author(s) J.-N. Roux, V. P. B. Esnault Publisher Elsevier Source Mechanics of Materials Keywords Cement grinding, comminution, dem, Energy efficiency, Grain breakage

The Effect of Short Duration Electric Current on the …

The effect of a single pulse of electric current with short duration on the quasi-static tensile behavior of a magnesium AZ31 alloy is experimentally investigated. A single pulse of electric current with duration less than 1 second is applied to the specimen, while the specimen is being deformed in the plastic region under quasi-static tensile loads. After a nearly instant decrease of flow ...

Quasistatic process

t. e. In thermodynamics, a quasi-static process (also known as quasi-equilibrium, from the Latin quasi, meaning ''as if'' ), is a thermodynamic process that happens slowly enough for the system to remain in internal equilibrium. An example of this is quasi-static compression, where the volume of a system changes at a rate slow enough to allow the ...