Translation of "Hertzsche pressung" in English

The spherical flange surface section additionally provides for a low Hertzian pressure.

The Hertzian pressing is very greatly reduced through this roller pairing.

The Hertz pressure is reduced considerably through this roller pairing.

The disadvantage of these is the high Hertzian pressure necessary to provide the required holding power.

The calculations may be based, within the alignment area, on interior deformation because of bulging; on tensile forces because of alignment; and on interior deformation because of roller striking and because of an uneven alignment of the roller track, as well as on the interior deformation by surface pressure of the rollers (hertz's pressure).

Since the compressive force is a non-directional force nd acts in all directions, the pressure, transferred from the roller bed onto the press band by means of hertzian pressure, is reduced by this pressure prevailing in the equalizing space, i.e. the press band is again released.

On the other hand, the surface pressure prevailing in the equalizing space acts also on the press band so that the total amount of pressure, provided by the hertzian pressure and the fluid pressure medium in the equalizing space, acts on the material to be pressed.

The purpose of this design was to lessen the Hertzian compression by improving the hug between the roller bearing surfaces and the races.

Consequently, the hertzian pressure, exercised by the roller bed, is held lower than the compression yield point of the press band which is determined by the material used.

A correction table, in which essential factors influencing the actual displacement of the die, such as the spring-back of the tabletting press and the flattening of the die and press roll due to the Hertzian stress or pressure, are taken into account, is stored in the computer.

Both the spring-back and the Hertzian stress depend on the pressing force applied to the press die.

If a pressing force of 80 kN and a prior-art die head shape are assumed, a Hertzian stress exceeding 4,300 N/mm2, which corresponds to a maximum permissible Hertzian stress for the pair formed by the die head and the press roll, is obtained at the transition of the toroidal surface into the plateau surface in the contact zone of the die head and the press roll with manufactured dies.

As a result, a Hertzian stress that is greater toward the center of the press than at the outer edge of the die is generated along this instantaneous contact line.

A gap thus develops on the side of the die head tilted toward the center of the press, i.e., the center of rotation, in the unloaded state of the pair formed by the press roll and the die head, while a nearly uniform Hertzian stress develops over the entire engagement line during loading, as a result of which maximum load-bearing capacity of the press roll-die head pair is made possible.

Thus, Hertzian stress is reduced by such a design at the pulling side in the case of a pulling load acting on the surfaces of contact because the number of the points of contact is at least doubled in comparison with conventional plate chains.

Owing to the high radial stress, it is advantageous with outer rings with crowned contours to have as large a radius as possible in order to reduce the minimum Hertzian stress.

The object of the invention is to provide a roller bearing with a thick-walled outer ring with the crowned contour of the outer ring configured such that, when rolling the outer ring on the cylindrical matching roller path, the maximum Hertzian stress arising is diminished and its threshold value is not exceeded even during tipping of the outer ring axis.

Experiments have shown that with outer rings with curved contours formed by. several arcs in accordance with the invention, the Hertzian stress arising in interaction with the matching roller path 8 is clearly diminished, and its threshold value is not exceeded even when the outer ring axis is tipped.

Both the belt surfaces and the support rollers are constantly varyingly stressed close to the limits of elasticity by the Hertzian stress in the contact lines, which immediately leads to fatigue phenomena particularly in the pressing belts.

The contact surface on the ring 20 may in this case be of convex arrangement for the purpose of favorable stress distribution (Hertzian stress), and the contact surface on the blade carrier 13 is cylindrical.

An areal force prevails on the material side but, on the support side, only a linear pressure is transmitted via the pressure lines between belt and support rollers. The Hertzian stress resulting from the contact lines limits the application of this principle.

The measured results represented in the figures which follow were determined under the following conditions of operation (corresponding Hertz compression is given in brackets):

With the new solution, the contact surface between metal and PEEK is increased, thus reducing the Hertzian contact stresses in the PEEK significantly.

The maximum load (Hertzian load) as well as the approach of both bodies (ball, cylinder, ellipsoid, plane; convex and concave) is calculated using the Hertzian equations.

The greatest advantage of using asymmetrical toothing is that this reduces Hertzian pressure on the flanks that are in contact with each other.