Aspect ratio diagnostic

You can work with mesh aspect ratios in either normalized or standard format.

Normalized is recommended, however, use standard when attempting to maintain compatibility with previous Autodesk products.

Find below the definitions of normalized aspect ratio and standard aspect ratio.

Normalized

For 2-dimensional mesh:

Element Definition
Aspect Ratio (4 * SQRT (3) * Area of triangle) / sum of squares of edge lengths.
Range From 0.0 (straight line) to 1.0 (equilateral triangle).

Standard

For 2-dimensional mesh:

Element Definition
Aspect Ratio longest side squared / (2 * triangle area)
Range From 1.16 (equilateral triangle) to infinity (straight line).

For 3-dimensional mesh:

Element Definition
Aspect Ratio longest edge length / (shortest perpendicular height) * sqrt(1.5)
Range From 1.16 (equilateral tetra) to infinity (flat tetra).