MDESIGN Hertzian Pressure
The calculation of two contacting solids and of surface pressure values caused on their points of contact this program can accomplish according to the Hertzs theory.
Thereby, you can principally differ between point und linear contacts of solids. So, e.g. a point contact is present, if an all-round convex solid is considered. But cylinders have according to this theory an endless length in axial direction, which is understood as linear contact.
The base for calculating of convergence and surface pressure at touching of two elastic solids is the Hertzs theory taken from the German books Dubbel Taschenbuch fr den Maschinenbau, 19th edition, as well as Die Wlzlagerpraxis, 3rd edition of J. Brndlein, Vereinigte Fachverlage.
Scope of the Program
The condition of the application is that the solids are deformed only elastically and thus they do not exceed the limit of proportionality of materials. Accordingly, on account of a crushing stress acting on, no any plastic elongations are permitted to appear in the contact surfaces. Additionally, only normal stresses occur in the thrust face but no any shear stresses. The convergence (flattening) of both solids has to be small in proportion to the sizes of radii of curvature.