Results 61 to 70 of about 6,258 (242)
Deep Underground Science and Engineering, EarlyView.An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang +5 more
wiley +1 more source
Carrying Capacity of Spherical Hydrostatic Bearings Including Dynamic Pressure
LubricantsTo calculate the carrying capacity of spherical hydrostatic bearings, a numerical calculation model was presented. The influence law of dynamic pressure effect on the carrying characteristics of liquid hydrostatic spherical bearings is revealed.
Shengdong Zhang +6 more
doaj +1 more source
Multi-Body Dynamic Analysis of Hydrostatic Bearing with the MMC Material in Micro-Nano Machining. [PDF]
Micromachines (Basel), 2023 Khaghani A, Ivanov A, Cheng K.
europepmc +1 more source
Deep Underground Science and Engineering, EarlyView.The evolution of the temperature field and frozen wall under different fracture conditions was examined by an artificial ground freezing‐based thermal‐hydraulic coupled model. It was observed that fracture inclination affects the interaction extent of freezing pipes and fracture, while phase transition extent is the dominant factor for heat transfer in
Chenyi Zhang +9 more
wiley +1 more source
Pad Alignment Methods and Their Impact on Large Hydrostatic Bearing Precision
MachinesHydrostatic bearings are frequently used for moving large structures smoothly and precisely. In such applications, difficulties with manufacturing, transportation, and assembly arise.
Jan Foltýn +5 more
doaj +1 more source
CHANGES IN THE SURFACE LAYER OF ROLLED BEARING STEEL
Acta Polytechnica, 2015 This paper describes changes observed in bearing steel due to roller burnishing. Hydrostatic roller burnishing was selected as the most suitable method for performing roller burnishing on hardened bearing steel.
Oskar Zemčík +2 more
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Deep Underground Science and Engineering, EarlyView.B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza +4 more
wiley +1 more source
Case Studies in Thermal EngineeringThe pneumatic supporting system consisting of gas springs and self-charged hydrostatic bearings can suppress vibrations and improve durability of free piston Stirling engines.
Lingxuan Kong +6 more
doaj +1 more source
A Theoretical Investigation on Hydrostatic Bearing
Bulletin of JSME, 1962 A theoretical study was made on the following points concerning the design and analysis of the hydrostatic bearing ; (1) Optimum dimensions of the recess. (2) Correction of the load capacity and the quantity of flow for application to journal bearing. (3) Squeeze film effect in hydrostatic bearing with the recess and external restriction.
MORI, Haruo, YABE, Hiroshi
openaire +3 more sources
Deep Underground Science and Engineering, EarlyView.Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu +4 more
wiley +1 more source