Menu
Mobile crushers can also be called mobile crushing plants, mobile crushers, etc. It is an inevitable product of high-tech crushing technology in the new era, and its main features are that it can be operated mobilely, can walk freely, and is more convenient for transitions, ensuring that the equipment While the production is safe, the work process is more reliable.
DOI / Corpus ID 2855742; The impact of different cone beam computed tomography and multi slice computed tomography scan parameters on virtual three dimensional model accuracy using a highly precise ex vivo evaluation method
·Parameters such as viscosity solvent evaporation rate and drawing speed must be optimised to consistently obtain nanofibers of reproducible dimensions electric field surface charges accumulate on the droplet s surface leading to the elongation of the droplet into a cone like shape known as a Taylor cone Eventually a jet of polymer
·Methods for predicting the values of the Bekker P S parameters and the cone terrain shear parameters from measured CI data are explored A methodology selected for this study uses derivative free optimization algorithms DFOA with continuous CI vs sinkage measurements as input and uses the improved cone terrain interaction model to predict
·Performance of the air nozzle of the mine tri cone bit directly affects life of bit and rock breaking efficiency The shape of air nozzle influences performance of mine tri cone bit It is necessary to optimize the shape of the air nozzle of tri cone drill bits The general specifications of gas mine tri cone bit were analysed Working condition and parameters of the air nozzle of the
·The parameters for the impact ionization model were meticulously chosen to ensure precise modeling Specifically These findings have great significance in breaking the SiC limit and expanding the application range of SiC floating junction power devices cone shaped electric field current density waveform and applications Microelectron
·Then mathematical optimization models for morphing parameters of the nose cone are established and they are solved by a multi objective optimization algorithm and surrogate model technology Especially the diving and ascending motion processes of the glider are separately considered in the above optimization
·Thirdly by improving the fitness function of GA and inertia weight of PSO an improved PSO GA is proposed According to the current curves of EPB the parameters of the discharge rock breaking circuit sub model are identified Last but not the least the current curves are fitted using this algorithm to identify the model parameters
·1 Introduction Roller cone bits are widely used in the oil and gas drilling industry and their performance directly affects the drilling quality and cost Winters et al 1987 Warren 1987 Kahraman et al 2000 The drilling rate or rate of penetration ROP is one of the most important bit performance parameters and a series of studies on ROP models for roller
·In this research article we investigate the coupled breaking soliton cBS model using two distinct analytical methods namely the Lie symmetry approach and the Unified method We start by applying the Lie group technique to the cBS model allowing us to establish infinitesimals vector fields commutative and adjoint tables and an adjoint transformation
·The vibration parameters the harvest efficiency of mature cones and the damage caused to the tree by the loss of shoots immature cones and damage to the bark were analysed Adjusting the trunk shaker in a frequency range of Hz and the effective acceleration values at the trunk in the range m s −2 removed an average
·As a component directly acting on the rock in the drilling process the early failure of the outer ring and the low efficiency of rock breaking will occur when the cone bit is drilled To solve these problems a new type of split bit is designed in this paper and the kinematic analysis model of the cutting tooth is established The displacement velocity and
·The past few years have witnessed the rapid development in a new frontier of topological phases of matter [1 2] which are termed as the higher order topological insulators HOTIs [] HOTIs are firstly indicated by the existence of chiral hinge states in axion insulators in magnetic fields [4 5] and then come into sight after the birth of the celebrated multipole
Figure 6 indicates the parameters for bit structure as L R β parameters for bit and cone positions as The rock breaking simulation model was totally divided into 912 396 elements And the system of unit mm N s was applied in the numerical model while for convenience results were displayed according to the engineering conventions
·In this paper an improved model for cone terrain interaction that considers both the normal pressure and shear stress distributions on the cone terrain interface is proposed The functional relationship between CI and two groups of B W terrain parameters namely the Bekker P S parameters and the cone metal terrain shear parameters is developed
Table 3 collected the activation and hydrolysis parameters used in the model These parameters inform the model through the equations below As before Z ¼ 1 2 n 0 Table 1 Geometric parameters for the mouse cone outer segment COS Unit Description Range Species R b μM Radius of COS base [ ] Mouse R t μM Radius of COS tip [
·The most widely used Bourgoyne and Young BY penetration rate model have been chosen for roller cone bits and parameters were extracted to adjust for other bit types
· article{Bong2018EffectOC title={Effect of Cone Penetration Conditioning on Random Field Model Parameters and Impact of Spatial Variability on Liquefaction Induced Differential Settlements} author={Taeho Bong and Armin W Stuedlein} journal={Journal of Geotechnical and Geoenvironmental Engineering} year={2018} volume={144}
·Cone beam computed tomography CBCT is widely applied in dental and maxillofacial diagnostic imaging which raises great concerns to radiological dose caused by this device This work measures the absorbed dose inside an uniform cylindrical phantom when it is scanned by dental CBCT at different scan parameters of mAs and kV; meanwhile studies the
·Dependence of electrospinning process on viscosity parameters has been reported for various polymer solutions Some research groups have worked on relationship between concentration and viscosity of polymer solutions which was predicted to be η C for semidilute unentangled and C for semidilute entangled regime [9] [10] [11] The
·There are a sufficient number of works devoted to modeling crushing machines Nevertheless the fact that there are a large number of working conditions and the ongoing development of science and technology require continuous improvement and specification of the models intended for crushing processes and those of the devices concerned However there
The neural network rock classification model incorporating dynamic numerical simulation and transfer learning achieves a prediction accuracy of % for granite % for sandstone and % for limestone and reveals an enhancement in prediction accuracy of up to % compared to the models without transfer learning Expand
·Cone penetrometer testing CPT is a frequently used soil characterization technique for liquefaction assessment; however this technique has shortcomings in accurately characterizing very thin
·The effectiveness of the proposed model was verified by comparing the experimental and simulation results of the split Hopkinson pressure bar SHPB test on sandstone Finally the dynamic rock breaking process under compound impact was simulated and the effects of the compound impact parameters on the rock breaking performance were
·Concerning simulation and model research of electro pulse discharge breaking Burkin et al 2009a presented a discharge circuit prediction model based on the elastic plastic deformation of solid medium and dynamics of liquid medium Burkin et al 2009b further analyzed the relationship between the discharge parameters of the pulse power supply and
·Disk cutters as the main component of rock fragmentation are prone to various types of breakages during rock cutting due to the unevenness of rocks in nature which can affect rock breakage efficiency This study has numerically simulated stress and strain changes for different rocks under rock breaking using disk cutters This study has used several behavioral
Micro motion feature is one of the effective features used for radar target recognition in the middle section of the ballistic curve The micro Doppler expressions of the scattering center at the conical point and two sliding scattering centers in the conical bottom are derived firstly The micro Doppler of the scattering center at the conical point calculated by its micro Doppler expression
