🎬apply different transformations to a grid of particles representing a solid material and observe how
This interactive tool demonstrates the difference between rigid motion and strain by letting you manipulate a grid. Rigid motions, such as translation and rotation, move the entire grid without changing the distance or angles between points. In contrast, strain involves deforming the grid itself. The volumetric slider controls uniform expansion or contraction, which changes the grid's "volume," corresponding to the trace of the strain tensor. The shear slider changes the shape of the grid cells by making the right angles acute or obtuse without altering their area, representing the off-diagonal components of the strain tensor. By using these controls, you can visually distinguish between displacement (rigid motion) and actual deformation (strain).
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