FFD IM - Freudenberg Forschungsdienste SE & Co. KG

Figure 3: LEVITEX crankshaft seal, 1999 –
2003
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user interface of this app currently comprises two screens
on a mobile device with Android or the Apple operating
system. The first page (see Figure 1) is primarily for the
purpose of entering two stretches of the material. This deformation
is then visualised in the graphic output of the
second page (Figure 2) on the plane of invariants for incompressible
materials.
If you have any suggestions or other ideas on this complex
subject, please contact Dr. Baaser who would be delighted
to provide you with this application as a “tool” and for
demonstration purposes.
FFD’s CAe supports LevIteX developments for Fst-Ape and burgmann-
Automotive
An idea and development of Burgmann Automotive
for gas-lubricated crankshaft seals, now ten
years old, have been picked up at FST again.
This sealing concept is currently being refined at
FST under the aspect of CO2 savings within the
context of the LESS (Low Emissions Sealing Solution)
package. A new approach in which an elastomer
spring is to be used in combination with
megaseries-suitable face geometries is shown
as a cross-section in Figure 4. It is thus possible
to reduce manufacturing costs to such an extent
that cost-effective usage is directly worthwhile. In
addition, benefits result due to the elastomer
spring since the friction-prone ancillary seal , as
used in conventional crankshaft seals, is no longer
needed. The first few studies on this concept
have evolved with Burgmann’s calculation program
for crankshaft seals in cooperation with
Dr. Klaus Lang of Burgmann (Wolfratshausen).
Figure 4: Design and refinement of Burgmann’s LEVITEX
The first design of the elastomer spring was re-
seal
alised using FFD’s WebFEM program. For complete
optimisation of the functionality and harmonisation of the
components, Burgmann’s calculation program is now being linked
to Dr. Baaser’s developments. This enables a computer-aided structural
optimisation of the overall concept. At this point, there is also