Engineering & Materials Science
Drill strings
100%
Drilling
32%
Rocks
31%
Drilling rigs
25%
Stick-slip
25%
Buckling
24%
Chaos theory
23%
Pendulums
20%
Sliding mode control
15%
String theory
14%
Drill pipe
14%
Finite element method
13%
Experiments
13%
Synchronization
12%
Mathematical models
10%
Virtual prototyping
10%
Elastic deformation
8%
Horizontal wells
8%
Controllers
8%
Anchors
8%
Dynamic loads
7%
Farms
7%
Actuators
6%
Clocks
6%
Diamonds
5%
Boreholes
5%
Friction
5%
Time delay
5%
Landing
5%
Mathematics
Numerical Study
24%
Chaos
21%
Pendulum
18%
Vibration
17%
Experimental Study
15%
Strings
13%
Experimental Results
13%
Dynamic Load
12%
Hyperchaos
12%
Excitation
12%
Sliding Mode Control
11%
Absorber
11%
Elastic Deformation
10%
Parametric Analysis
10%
Drilling
10%
Chaotic Dynamics
9%
Stress Field
9%
Die
8%
Damped
8%
Motion
7%
Chaotic Behavior
7%
Nonlinear Control
7%
Harmonic
6%
Phase Synchronization
6%
Influence
6%
Evidence
6%
Numerical Investigation
6%
Range of data
6%
Three-dimensional
5%
Instrumentation
5%
Systems Engineering
5%
High-speed Camera
5%
Physics & Astronomy
strings
27%
drill bits
18%
vibration
17%
drilling
12%
torsional vibration
12%
synchronism
11%
rocks
10%
slip
10%
controllers
8%
sliding
7%
chaos
7%
landing
7%
thresholds
6%
oscillations
5%
oscillators
5%
pendulums
5%
friction
5%