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Consider a single degree of freedom (SDOF ) model
Figure 1.1: Spring-Mass- Dashpot system |
m = mass
k = spring constant
c = viscous damping coefficient |
Here, Excitation is the applied dynamic force and Response is Monitored in terms of displacement or velocity .
The excitation and response of a system are often characterized by the physical variables, such as:
The selection of these variables depends on various factors, such as the nature of the problem and the objective of the analysis. A typical example will clarify this issue. |
Displacement, 
