Figure 1.
(a) Picture of male Cyclommatus metallifer stag beetle. (b) Cross section through the jaw exoskeleton at the large tooth (the location is indicated in a). The resistance of this slice against bending about the X-axis (Iy) depends on the distance y to the X-axis of all partial areas dA (see also equation (2.1)). Its resistance against torsion depends on the distance r to the neutral axis of all partial areas dA (see also equation (2.2)). The scale bar indicates 1 mm. (Online version in colour.)