Generic

Define an earthquake event based on a freely definable response spectrum

Define the values on the abscissa and on the ordinate as well as the transition between the values in the table.

Select the wished quantities for the definition of the spectrum via the radio buttons or the headers of the table, respectively.

The defined table values are graphically displayed in the right window (logarithmically where applicable).

Perform additional definitions for the earthquake event in the top right window area.

The following quantities for the abscissa are available

w

Angular velocity

f

frequency

T

Period

The following quantities for the ordinate are available

d

Displacement

v

Velocity

a

acceleration

Additional definitions for the earthquake event

Superposition rule

Method for the superposition of the particular calculated eigenmodes

• ABS
• SRSS
• DSC
• CQC

Duration

Duration of the earthquake event

To be used within the superposition rules DSC and CQC

Damping

To be used within the superposition rules DSC and CQC

ag

Design ground acceleration for the evaluation of the response spectrum (task EQRESPONSE)