Dynamic Response Spectrum Inputs not affecting natural frequency results
I am attempting to find the natural frequency of my staircase model as shown below using the total weight of the structure distributed evenly over every node as a nodal mass in the Ty direction. My issue is, I am able to get a frequency running the dynamic…
Natural frequency, Mesh element size, Rayleigh damping, vertical force on retaining wall model
Q1: Is there any way to determine natural frequency of Retaining wall soil numerical model from PLAXIS?
Q2: How can we see the exact element mesh size in PLAXIS?
Q3: I am using Mohr-Coulomb soil model and want to introduce constant Rayleigh damping…
PLAXIS 2D Dynamics
Application
PLAXIS 2D
Version
PLAXIS 2D AE
Date created
09 May 2011
Date modified
09 May 2011
The Dynamics module of PLAXIS 2D allows us to perform dynamic analyses of the propagation of waves through the soil…
PLAXIS 3D Tutorial 09: Free vibration and earthquake analysis of a building
Application
PLAXIS 3D
Version
PLAXIS 3D
Date created
04 Oct 2018
Date modified
27 Feb 2023
This example demonstrates the natural frequency of a long five-story building when subjected to free vibration and earthquake…
PLAXIS 2D Tutorial 16: Free vibration and earthquake analysis of a building
Application
PLAXIS 2D
Version
PLAXIS 2D
Date created
20 May 2017
Date modified
27 Feb 2023
This example demonstrates the natural frequency of a five-storey building when subjected to free vibration and earthquake…
Free vibration analysis of a dam
Application
PLAXIS 2D PLAXIS 3D
Version
PLAXIS 2D PLAXIS 3D
Date created
04 January 2013
Date modified
04 January 2013
This document describes an example that has been used to verify the natural frequency of vibration…
Simply supported beam
Application
PLAXIS 2D PLAXIS 3D
Version
PLAXIS 2D PLAXIS 3D
Date created
17 December 2012
Date modified
17 December 2012
In this test the natural frequency of a simply supported beam will be determined and compared…
Can RAM Elements be used for vibration analysis of stairs?
I have a stair that I'm concerned may be susceptible to vibrational issues. I've often used RAM Elements to model a variety of stair configurations under gravity loads and ELF seismic loading, but can it also be used to check for vibration? Most of the…
Frequency Check between Structure and Paddle Mixer
Hi,
I really need you help on this problem.
We have a paddle mixer with Frequency at 1800rpm.
We have extended the existing structure to accomodate the paddle mixer.
Now we run a frequency check and compared it with the limits of 80%-120% of the…
Natural frequency calculation
I referred example 28 of American examples to calculate frequency. I gave cut off mode shape 100. In the output, I found that the frequency increases with each mode. I am confused which mode should be considered for obtaining natural frequency? I need…
Generic Natural time periods of HLPV
I had this doubt from a long time and i thought MOSES users in bentley community can help me with the answer.
1) For a HLPV, what is the tentative natural time periods for Heave, Roll & Pitch ?
2) Which type is the one calculated by MOSES in mooring…
How do I calculate the natural frequency of the floor?
Applies To
Product(s):
STAAD.Pro
Version(s):
All
Environment:
N/A
Area:
Analysis Solutions
Subarea:
Eigen Solution
Original Author:
Bentley Technical Support Group …
Rayleigh Method Calculate Natural Frequency
Applies To
Product(s):
STAAD.Pro
Version(s):
All
Environment:
N/A
Area:
Analysis Solutions
Subarea:
Response Spectrum Analysis
Original Author:
Bentley Technical Support…
RE: Could I input Pump Frequency in Staad to find natural frequency of pump support structural steel
The natural frequency calculation for the structure is based on a free vibration analysis. So you do not need to input the machine frequency for that. However you can find out the response of the structure to the vibrating machinery by carrying out a…