PETScFEM Results: Truss network simulations

This animation shows a network of 20x20x20 cubes. For each cube truss was inserted at each edge, face diagonal, and cube diagonal (it makes a total of 28 trusses for each cube). The cube has side of length 1, and I two cylinder holes along axis `x' and `y' of radius R=0.4 have been pierced. The boundary conditions are: the bottom of the cube is fixed (all displacements u,v,w=0) and at the top I imposed a constant `w' displacement, and free slide in the x,y directions. The vertical displacement increases in time from 0 to 0.15. The color represents deformation of the trusses (blue=traction, red=compression).
This animation shows a structure of 1746 trusses. The left end of the array has an imposed harmonic motion (see more truss results).
Same as above but in this case frequency is higher so that more wavelengths can be observed
The network is initially moving to the right and then the base is suddenly stopped. Due to the inertia, the columns starts oscillating.
In this case the nodes at the bottom of the network are imposed to perform harmonic motion in time.
Same as above but in this case frequency is higher so that more wavelengths can be observed
In this case the base of the network (at the left) is rotating about its axis.
Same as above but in this case frequency is higher so that more wavelengths can be observed.
In this case the nodes at the bottom of the network are imposed to perform a composed motion of translation and rotation. The basis translates in a circular path of radius 1 and angular velocity omega=4.8RPM. At the same time the basis performs a rotation with variable angular velocity from -60RPM to 60RPM. (Due to frame rate sampling the observed frequencies may be different).

-- MarioStorti - 11 Nov 2007

This topic: Main/Cimec > PETScFEM > PETScFEMResults > PETScFEMTrussResults
Topic revision: 20 Sep 2010, MarioStorti
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