Sylodyn
Detailed Data Sheet®

Relative deflection in % of thickness with unstressed assay

Static creep behaviour
25 %

20 %
Full static loading

15 %

10 %

Half static loading

5%

1 Month

1 Year10 Years

Like other elastomers, Sylodyn®
exhibits increased deformation undera static load (creeping). This increasein deformation is proportional to thetime logarithm. In other words, theadditional deformation that occurs
is always the same for each decade(1 day, 10 days, 100 days, etc.). The
largest increase in deformation due tocreeping is completed after a relatively
short period of time. The areas of application for Sylodyn® have therefore
been selected so that the creep curveis the same for all types.

0%0123 45 6

7 10100

1,000
10,000Period of loading in days

Fig. 1: Deformation under static load depending on time

Change of natural frequency related to the datasheet-value in %Dynamic creep behaviour
10 %If Sylodyn® is used within the static
range of use, the natural frequency
remains stable under constant­ambient conditions.

8%
6%
4%
2%
0%
-2 %
-4 %
-6 %
-8 %

1 Month

1 Year10 Years

-10 %
0,1

1101001,000
10,000Period of loading in days

Fig. 2: Change of the natural frequency under ­static load depending on time

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Sylodyn®

Change of dynamic modulus of elasticity in %Amplitude dependence
50 %Sylodyn® materials exhibit a negligible dependency of amplitude. The
dynamic stiffness of other elastic
materials, such as compact, foamed
or bonded (rubber granule) rubber
products, however, is significantly
dependent on the amplitude ofexcitation.

40 %
30 %
20 %
10 %
Reference value 0.11 mm
0%
-10 %

Reference value: amplitude 0.11 mm(corresponds to a velocitiy level of
100 dBv at 10 Hz).

-20 %
-30 %
-40 %
-50 %

0.001

0.01

0.11

0.2

0.3

0.4

0.5
0.6
Amplitude in mm

Fig. 3: Dynamic modulus of elasticity depending on the vibration amplitude

Dependency of the mechanical loss factor on temperature and excitation frequency
The mechanical loss factor of Sylodyn® is related to the temperature of the ambient and to the excitation frequency.
These dependencies are shown in Tab. 1 and Tab. 2.
Dependency on temperature

Dependency on frequency-10 °C

0 °C

10 °C

20 °C

30 °C

50 °C

1 Hz

50 Hz

100 Hz1000 Hz

Sylodyn® NB

0.35

0.20

0.11

0.07

0.06

0.05

Sylodyn® NB

0.05

0.12

0.17

0.36

Sylodyn® NC

0.35

0.20

0.11

0.07

0.06

0.05

Sylodyn® NC

0.05

0.12

0.16

0.33

Sylodyn® ND

0.35

0.20

0.11

0.08

0.06

0.05

Sylodyn® ND

0.05

0.12

0.15

0.30

Sylodyn® NE

0.36

0.20

0.12

0.08

0.07

0.05

Sylodyn® NE

0.06

0.12

0.15

0.27

Sylodyn® NF

0.37

0.22

0.13

0.09

0.07

0.05

Sylodyn® NF

0.07

0.12

0.15

0.24

Tab. 1 and Tab 2: DMA-test (Dynamic Mechanical Analysis). Test within linear area ofthe load deflection curve. Values based on the shape factor q = 3 shown at the static
range of use.

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Dynamic modulus of elasticity in N/mm 2

Temperature dependency of the dynamic modulus of elasticity
100

Sylodyn® exhibits a temperature­dependence of the dynamic modulusof elasticity.
Sylodyn® NF

10Sylodyn® NE

Sylodyn® ND
Sylodyn® NC
Sylodyn® NB1

DMA-test (Dynamic Mechanical Analysis), measurements with sinusoidal
excitation in the linear area of the load
deflection curve, values based on theshape factor q = 3 shown at the static
range of use at a frequency of 10 Hz.

0.1
-10

0

10

2030

4050
Temperature in °C

Fig. 4: Dynamic modulus of elasticity depending on the temperature

Dynamic modulus of elasticity in N/mm 2

Frequency dependency of the dynamic modulus of elasticity
100

Sylodyn® NF
Sylodyn® NE
10Sylodyn® NDSylodyn® NCSylodyn® NB
1Sylodyn® exhibits a frequency­dependence of the dynamic modulusof elasticity.
DMA-test (Dynamic MechanicalAnalysis), measurements atroom temperature (23 °C) with asinusoidal excitation in the linear
area of the load deflection curve,­values based on the shape factor q = 3
shown at the static range of use.

0.1
1

10100

1,000
Frequency in HzFig. 5: Dynamic modulus of elasticity depending on the frequency

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3Shape factor
CuboidThe shape factor is a geometric measure for the shape ofan elastic bearing defined as the ratio of the loaded area
and the area of the perimeter surfaces.

q=tl

w·l
2 · t (w + l)w

Loaded area
Shape factor =Perimeter surface area

Definition:

DCylinder
The charts shown in the datasheets for the load deflection
curve, for the modulus of elasticity and for the natural
frequency are suitable for shape factor 3. The material
properties must be adapted accordingly for different
shape factors, shown on page 4 of the datasheet.

q=

D4·tt

DdHollow cylinderq=

D-d4·tt

Elastic Sylodyn® bearings are considered asReference value

Shape factor

0.5

Strip bearing

23

Full surface bearing

6Celled materials with low densities such as Sylodyn® NB are volume compressible and hence
the influence of the shape factor on stiffness can be neglected. By contrast, the shape factor
plays an increasingly important role as the compactness of the elastomer increases.

All information and data is based on our current knowledge. The data can be applied for calculations and as guidelines, aresubject to typical manufacturing tolerances and are not guaranteed. Material properties as well as their tolerances can varydepending on type of application or use and are available from Getzner on request.
Further information can be found in VDI Guideline 2062 (Association of German Engineers) as well as in glossary.
Further characteristic values on request.

AUSTRIA — Bürs GERMANY — Berlin — Munich — Stuttgart FRANCE — Paris — Lyon JAPAN — Tokyo INDIA — Pune
JORDAN — Amman CHINA — Beijing USA — Charlotte AUSTRALIA — Melbourne
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DB SN Detail en © Copyright by Getzner Werkstoffe GmbH l 03-2022
We reserve the right to amend the data.

Point bearing