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Propagation of impulse in 3D block
Posted 7 Oct 2019, 16:05 BST Mechanical, Acoustics & Vibrations, Structural Mechanics & Thermal Stresses Version 5.4 3 Replies
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Hi everyone, I am trying to simulate the measurement of an acceleration given by an impulsive force on a 3D block. I set up the time domain analysis looking at user manual and similar simulations in the forum. The impulse force is simulated using the gaussian function and I would like to measure the acceleration at a given point on the opposite face of the block. Looking at the 1D graphs of displacement, velocity or acceleration at the measurement point I cannot find the delay in the signals given by the propagation. Given the material parameters I would expect a delay between the signal at the application and measurement points of 0.01[s]. By the way, the setup in terms of geometry and physics looks correct to me, should I change something in the time domain solver, like relative tollerance? I attach the comsol project. Thank you.