Results 241 to 250 of about 643,401 (321)

Report on drill string physics simulator

As part of Task 72 this deliverable will provide a report on building of drill string model with generalized beam ...
openaire   +1 more source

Temperature string device (TSD): A new low-cost instrument for sea ice observations in remote areas. [PDF]

HardwareX
Nissen Pedersen LA, Don J, Melvad C, Rysgaard S.   +3 more
europepmc   +1 more source

Research on a Graded Self-Powered Vibration Sensor for Geological Drilling. [PDF]

Micromachines (Basel)
Zhang J, Wu C.
europepmc   +1 more source

Design and mechanical properties analysis of drill pipe's joint thread with unequal taper under complex loads. [PDF]

Sci Rep
Liu H, Song Y, Hu S, He Y, Wan J, Yi X, Hou S.   +6 more
europepmc   +1 more source

Effects of plyometrics training on lower limb strength, power, agility, and body composition in athletically trained adults: systematic review and meta-analysis. [PDF]

Sci Rep
Sun J, Sun J, Shaharudin S, Zhang Q.
europepmc   +1 more source

Bioinspired Drilling for Extraterrestrial Applications. [PDF]

Biomimetics (Basel)
Battsengel GE, Melkoumian N, Harvey D, Akmeliawati R.   +3 more
europepmc   +1 more source

Vertical Shaft Drilling Rig Frequency Conversion Electronic Control Design and Its Energy Saving and Noise Reduction Effect Analysis. [PDF]

ACS Omega
Tian G, Ding Z, Liu B, Shang Z, Zhao K, Jiang X.   +5 more
europepmc   +1 more source

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Analysis of Coupled Axial-Torsional Drill-String Vibration Based on Fuzzy Bit-Rock Interaction Model Considering Bit Balling Condition

IEEE Transactions on Industrial Informatics, 2023
In this article, a coupled axial-torsional drill-string vibration model is established, which considers the influence of bit balling on rock-breaking and drill-string vibration.
He Huang, Chengda Lu, Sike Ma, Min Wu
semanticscholar   +1 more source

Suppressing Coupled Axial–Torsional Vibration of Drill-String System Considering Regenerative Cutting Induced Delay and Actuator Saturation

IEEE transactions on industrial electronics (1982. Print), 2023
This article is concerned with suppression of coupled axial–torsional vibration of drill-string system, taking into account the state-dependent delay inherited from regenerative cutting of drill-bit on rock and actuator saturation of drill-rig. Note that,
Chengda Lu, Z. He, Luefeng Chen, Quanxin Li, Min Wu   +4 more
semanticscholar   +1 more source