The parameters of test specimens were chosen, accounting for the design and dimensions of the most-used teeth of M- and S-type cone drill bits, and the parameters other than those were also employed (Fig. 2).The test specimens were prepared with the tooth widths l = 12.5 and 25 mm, the test portion height h = 26 mm, the cutting-point …

This paper presents the idea and provides an analysis of the rock breakout mechanism utilizing an undercut/breakout anchor. The new design is a modification of a standard undercut anchor, which is …

The difference in structure parameters can be utilized to distinguish different space cone targets effectively. Due to the fact that the high resolution range profile (HRRP) sequence contains the structure and shape information of the observed target, an inversion method for geometrical structure parameters of space cone targets based on the HRRP sequence …

Cone Penetration Test Design Parameter Correlations. This module provides Cone Penetration Test (CPT) semi-empirical correlations for geotechnical design parameters. Appropriate usage of the CPT and correlations for design depends on several factors that are discussed in this module. A brief overview of CPTs is also included. Overview of CPT.

The results show an excellent linear relationship between the process parameters (cone angle, curvature, and Taylor cone height) and fiber diameter. According to the simulation results, the axial fluid flow keeps the maximum and accelerates continuously until the collector captures it. ... Krucinska I. Design of vascular prostheses …

Cone geometries used in uplift capacity calculations for single tensioned anchors (after Littlejohn and Bruce (1975–76, 1977), Hobst and Zajíc (1977) and Littlejohn (1993)).

Experimental measurements and numerical modeling (volume of fluid method) were used to investigate the effects of geometric parameters on the spray cone angle in pressure swirl injectors. The non-dimensional impact factor, η, is defined to examine the influence of each parameter on the spray cone angle. Except for the …

According to the deviation of Section 2.3, the contact ellipse of crossed beveloid gear pair is closely relative to the geometric design parameters. Therefore, the effects of FPD angle, cone angle and helix angle on the location and size of contact ellipse are investigated in this section. The gearing parameters are shown in Table 1.

At present, the roller cone bits and Polycrystalline Diamond Compact (PDC) cutter bits are widely used for breaking the rock, especially the PDC bit due to its high efficiency and longevity. The investigation of rock-breaking mechanism in cutting is essential to evaluate and design the PDC bit.

The pitch angle, also known as the cone angle, is the angle between the gear axis and the pitch cone. It affects the contact pattern and load distribution between the gears. ... This could include adjusting the tooth profile, pitch angle, or other design parameters. Optimizing the manufacturing process: If manufacturing defects are …

The inlet structure of hydrocyclones has great impact on performance. In this paper, the effects of spiral inlet geometric parameters on the flow field characteristics and separation performance were investigated by CFD. Numerical results show that the pitch has the largest influence, followed by the heads, the turns, and the steady flow cone. …

It is illustratel that the penetration performance of a shaped charge determines kbest values of parameters in the DiPersio, Simon, and tMerendino theory of penetration by shaped-charge jets and that it is possible to relate these penetration parameters to design parameters such as cone angle and liner thickness.. OD.

Download Citation | On Jan 1, 2022, Lei Sun and others published Effects of key parameters on viscous hollow cone spray angle and available correlation for spray angle prediction | Find, read and ...

Overview. The purpose of this chapter is to identify, either by reference or explicitly herein, appropriate methods of soil and rock property assessment, and how to use that soil and rock property data to establish the final soil and rock parameters to be used for geotechnical design. The final properties to be used for design should be based ...

The strength and the formation of the vortex in a conical basin have been analyzed numerically by changing the design parameters such as cone angle, basin height, basin inlet, and outlet diameter ...

The calculation model is shown in Fig. 4, where the explosive is Comp-B, the length of the charge is 110 mm, the diameter is 60 mm.The thickness of the liner is 2.4 mm, with a diameter of 60 mm, with a conical angle of 60°. Numerical calculations are carried out in the air domain.

In some applications, PDC bits will drill 3-4 times the footage of a conventional roller bit at 2-3 times the drilling rate if sticky formations do not pose problems. For example, 18,000-20,000 ft wells in South Texas typically complete in 70-80 days using PDC bits vs. 120-130 days with conventional roller bits.

Dynamic cone penetrometer is a simple method for estimating soil parameters and infiltration plays an important role in in-situ identification of soils. This technique is cheaper and faster than traditional methods of soil boring and geotechnical studies, and therefore in many cases is used for studying layers of soil, especially when …

angle is 1.5°, the base angle of the moving cone is 50°, the shape is half - cylinder, and the rotational speed is 450 rad/min. Increased maximum crushing force indi -

Three different geometries have been generated to study the impact of geometry on the flow. All three geometries are based on the nose cone design, i.e. pointed tip, rounded tip, and ogive tip. The mesh independent study has been conducted to optimize the computational mesh to obtain favourable results.

Other studies optimized the cone angle [10], [11] or the length of the conical body [12]. Although the spigot is the hydrocyclone section of easiest design, it has also been analysed in detail. ... Accordingly, the results obtained in this study suggest that these parameters should be considered in the design of industrial units where liquid ...

However, we can estimate θ Bn with the IMF cone angle. OMNI measurements yield an IMF cone angle of 86° and the local THEMIS C observations yield the same value. As the THEMIS B and C spacecraft are observing the subsolar region, θ Bn has to be very high with this perpendicular field. The lack of >10 keV ions in the ion …

Crushing chambers – cones. Having a good understanding of your crushers helps you make smart, informed decisions. Whether you want to build up your knowledge or refresh your memory, this is the place to start. We take you through the basics of cone crushing to more detailed advice on chamber solutions, feed arrangements and configurations.

Determination of the in situ engineering properties of foundation materials has always been a challenge for geotechnical engineers and, thus, several methods have been developed so far. Dynamic Cone Penetration (DCP) test is one of the most versatile amongst them. In the present research, a light weight simple DCP device was …

Experiments are performed on seven atomizers to study the effect of design, and operating parameters on spray cone angle, and average droplet diameter. Spray cone angle remains constant with change in air mass flux, and increases with increasing orifice diameter, and manifold diameter.

The Fourier series expansion showed that the loads contained harmonics of the first, second, third and fourth orders. Using the concept of fuzzy sets, a multi-criteria optimization of the design parameters of the working chamber was performed, including the values of the eccentricity and the central angle of the beginning of the cheek profile.

Liu et al. [36] focused on the effect of geometric parameters on the spray cone angle and present an empirical formula to determine the SMD (Sauter mean diameter) of the spray. Durdina atomizers ...

The tests indicate that for the assumed mechanical parameters of rock and the depth of undercutting the rock with an anchor, the value of the angle of the cone failure is approximately 25º ...

The original criterion, i.e. Eq., describes a right-circular cone in the stress space when λ > 0, ... assuming that the dilation angle of the rock is equal to the internal friction angle, ... Drucker DC, Prager W (1952) Soil mechanics and plastic analysis or limit design. Q Appl Math 10:157–165. Google Scholar Ewy RT (1999) Wellbore ...

As the simulated operation of the DEM cone crusher with a real geometry is computationally too expensive, the performance of a small scale cone crusher was modelled in this study. The dimensions of the model parameters were determined based on the full scale cone crusher design geometry presented by Lang (1998).