softquake

Simulates the movement and stress of softbody buildings under the effect of earthquakes.

Running

Requires several libraries listed in the requirements.txt file

python softquake/main.py

The program works by writing information and reading from the user line by line (from lists of presets) to process user input as the simulation parameters (in other terms, reads from standard input).

About

Softbody structure is assumed to:

• Have Hookean springs and dampeners connecting the set of nodes.
• Have a self collision property.
• Have no effect on the earthquake plate.
• Be under the influence of gravity.

Earthquake plate is assumed to:

• Be constrained to horizontal motion.
• Move based on a singular sine with specific frequency and amplitude.
• Have no frictional interaction with the softbody.

Simulation is implemented to:

• Use a verlet integrator scheme.
• Use accurate distance and time units.
• Measure and visualize the contraction and expansion of the individual triangles in the mesh.
• Account for the effect of external forces.
• Use Delanuay triangulation for mesh.

Visualization is made to:

• Make a real-time video diagram using the amazing PyCairo and FFmpeg libraries.
• Show motion of a node of interest (sensor) in time.
• Do spectral analysis of the horizontal acceleration of sensor.