Accessing CyberShake Duration Data: Difference between revisions

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*Cumulative absolute velocity (CAV) (integral of the absolute value of the acceleration).
*Cumulative absolute velocity (CAV) (integral of the absolute value of the acceleration).


A reference document for these formulas is available here: [[File:durationMetrics.docx]]
A reference document for these formulas is available here: [[:File:durationMetrics.docx]].


== Accessing database data ==
== Accessing database data ==


The database contains duration data for the most useful metrics.
The database contains duration data for the most useful metrics.

Revision as of 19:21, 12 October 2017

This page details how to access CyberShake duration data.

Duration data is a relatively new addition to the CyberShake codebase, starting with Study 15.12.

Types of duration data

In CyberShake, we calculate the following duration metrics:

  • Energy integral (integral of the velocity squared)
  • Time to go from 5-75%, 5-95%, and 20-80% of maximum velocity
  • Arias intensity (pi/2g times the integral of the acceleration squared)
  • Time to go from 5-75%, 5-95%, and 20-80% of maximum acceleration
  • Cumulative absolute velocity (CAV) (integral of the absolute value of the acceleration).

A reference document for these formulas is available here: File:durationMetrics.docx.

Accessing database data

The database contains duration data for the most useful metrics.