Asteroid motion and accretion simulation

MatDEM1.66 introduces the calculation of universal gravitation, which realizes the simulation of planetary motion, collision and accretion. In this example, three asteroids have been created, numbered from 1 (big ball), 2 (small ball), 3 (small bar) from large to small, with a central planet diameter of 80 kilometers and an escape velocity of 116 m/s. Using P51s notebook computer, using CPU calculation, the number of simulation units is 4,600, the calculation takes 100 minutes, and the real world time is 10 hours.

Simulation test 1: The initial velocity of planet 2 is 40m/s, and the initial velocity of planet 3 is 20m/s.

Simulation test 2: Planet 2 has an initial velocity of 30m/s, and Planet 3 has an initial velocity of 20m/s. It uses a lower material bonding strength (easy to disperse).

The MatDEM team will train the use of the planetary simulator during the China Rock 2020 conference in October 2020. If you are interested, please watch the basic course "Discrete Element Method and Practice" online course first.