8 results found

August 12, 2020 | Tips & Tricks

WEBINAR: Basics of Dynamics Analysis in RISA-3D

Join us on August 25th for our webinar, Multi-Story Post-Tensioned Building Design using ADAPT-Builder. Read More

July 21, 2020 | Tips & Tricks

Improving Mass Participation in RISA-3D

The methods used to improve mass participation in model are essential for understanding and conducting a proper response spectrum analysis in RISA-3D. Read More

March 10, 2016 | Tips & Tricks

Importing Recorded Seismic Ground Motions

RISA-3D allows users to import recorded seismic ground motions for use in time history analysis. Read More

February 24, 2016 | Tips & Tricks

What are the Ramp Up/Coast Down Functions in Time History?

When creating a Time History function for sinusoidal equipment loading the program can automatically adjust the force and frequency at the beginning and end of the time history function. Read More

January 14, 2016 | Tips & Tricks

Importing a Time History Function

RISA-3D v14 introduces Time History analysis for use in the dynamic solution. Read More

November 24, 2015 | Tips & Tricks

Making a Time History Animation Video

RISA-3D allows users to view an animation of the deflected shape of the structure as a function of time. Read More

May 4, 2015 | Tips & Tricks

Ritz Vector Solver (Dynamics) now Available

RISA-3D v13 includes a new Ritz Vector Solver for the Dynamic analysis. Read More

April 3, 2012 | Tips & Tricks

Why Don’t My Response Spectra Reactions Satisfy Statics?

The applied loads in a response spectrum analysis (RSA) are the applied masses times the accelerations in the response spectra. Each mode of vibration produces its own set of joint reactions. Read More