stress ellipsoid

stress ellipsoid

[′stres i′lip‚sȯid]
(mechanics)
A mathematical representation of the state of stress at a point that is defined by the minimum, intermediate, and maximum stresses and their intensities.
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References in periodicals archive ?
This is named Search Grid Inversion Paleostress Determination method, and provides data on the main axis orientation and the axial ratios of the stress ellipsoids. This method tries to justify as many as possible of the measured faults with the minimum number of overprinted stress ellipsoids, using a systematic search on a grid and involves striae from both known and unknown fault regimes.
Most of the calculated faulting stages corresponds to stress ellipsoids characterized by a main axis (odd-axis) with a magnitude very different to the other two main axes.