dedendum circle

dedendum circle

[də′den·dəm ‚sər·kəl]
(design engineering)
A circle tangent to the bottom of the spaces between teeth on a gear wheel.
References in periodicals archive ?
The largest residual stress is ultimately formed at the dedendum circle, followed by the pitch circle, and the smallest is found at the addendum.
According to gear formula, the dividing circle of gearwheel and pinion is 120 and 90, respectively; the dedendum circle of gearwheel and pinion is 112.5 and 82.5, respectively; the addendum circle of gearwheel and pinion is 126 and 96, respectively; the involute standard gear can be attained by using involute module of AUTOCAD, and then we imported the two-dimensional graphs to ANSYS.
For a particular pressure angle on the coast side and drive side of an asymmetric bevel gear, the involute thickness of the teeth depends on radius of addendum and dedendum circle. Thus the thickness of the involute profile of asymmetric bevel gear along the face width portion at any point can be obtained using the concept of similar triangles as shown in Fig, 2