Analysis of DTH Button Bit using ANSYS software

1.  ANALYSIS OF DTH BUTTON BIT USING
P Koteswara Rao
Designer

2. ANSYS is a general purpose software, used to simulate
interactions of all disciplines of physics, structural,
vibration, fluid dynamics, heat transfer and
electromagnetic for engineers.
So ANSYS, which enables to simulate tests or working
conditions, enables to test in virtual environment before
manufacturing prototypes of products. Furthermore,
determining and improving weak points, computing life
and foreseeing probable problems are possible by 3D
simulations in virtual environment.
ANSYS software with its modular structure as seen in the
table below gives an opportunity for taking only needed
features. ANSYS can work integrated with other used
engineering software on desktop by adding CAD and FEA
connection modules.

3. Apply Hyper Mesh Properties of EN36c
i.Physical Properties:-
Density = 7.85 g / cc
ii. Mechanical Properties:-
Hardness= 40 HRC
Ultimate tensile strength = 1238 Map
Yield tensile strength = 993 Map
Elongation at break = 200 Gap
Modulus of elasticity = 200 Gap
Bulk modulus = 140 Gap
Machinabilty = 50 %
Shear modulus = 80 Gap

4. Modeling, Analysis and
Manufacturing Process of DTH
Button Bit
Fig5. Structural analysis of oil quenched
steel button bit red zone area max
stress area and Blue color min stress
Fig6&7.stress structural analysis other
type material Titanium carbide and
Tungsten carbide button bits

5. MATERIAL
VALUES
STRESS DISPLACEMENT STRAIN ALLOWABLE
VALUES
TUNGSTEN
CARBIDE
1.886 0.521 0.0062 344 map
TITANIUM
CARBIDE
1.689 0.00054 0.0000054 200 map
STEEL 1.718 0.00045 0.0000054 1345mpa