Assignment 2-RADIOSS Engine File Editing & 3D Meshing Challenge

AIM

Procedure:

Import RAD File

Check material properties of the rail component and calculate the speed of sound in steel rail

Rho_initial = 0.0078 is the initial density and E = 210000 is young's modulus

speed of sound in the material(c) = √(E/ρ)

Therefore, speed of sound (c) = √(210000/0.0078) = 5188.745m/s

Ques 2: The length of the rail is about 1000 mm. calculate the time takes for a shock wave to travel from one end of the rail to the other.

shock wave travels at the speed of sound.

Therefore, shock wave speed = speed of sound = 5188.745m/s

distance = 1000mm

time t = distance/speed of shock wave

time taken for a shock wave to travel from one end of the rail to the other end = (1000/5188.745) = 0.192725ms

Ques 3: Time for sound to travel the length of rail=0.192725ms

Objective 4: Edit the engine file so that the stress wave can be monitored, moving from one end of the rail to the other during an impact -this will require a termination time equal to the time it takes for the sound to travel the length of the rail(set on/RUN card)

frequency = time / no.of revolutions = 0.1927/20 = 0.09635