Module 3: Dynamic Properties and Selection of Materials
Lecture 13: Advanced Models of Viscoelastic Materials
Transforming in the frequency domain to and to one can express the relationship between them as
or
Considering the characteristic length of the system to be ‘' and cross sectional area , we can represent the above relationship in terms of stress and strain
as
After inverse laplace transformation, the governing equation in time domain may be expressed as
in the frequency domain to 
and 
to 
one can express the relationship between them as 
' and cross sectional area 
, we can represent the above relationship in terms of stress 
and strain 
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