Traffic Load (Ambient traffic) Simulation
Traffic Load (Ambient traffic) Simulation
(OP)
Hi all,
Does anyone know how to simulate ambient traffic/load(any sort of loading which are random in time and space)?
Should I use time history? I'm interested to get response in terms of acceleration and frequencies of vibration.
Peace
Does anyone know how to simulate ambient traffic/load(any sort of loading which are random in time and space)?
Should I use time history? I'm interested to get response in terms of acceleration and frequencies of vibration.
Peace





RE: Traffic Load (Ambient traffic) Simulation
RE: Traffic Load (Ambient traffic) Simulation
thanks mate for the link provided but what I meant something else.
I want to simulate ambient loading condition on bridge. Let's say in the field I record the response of bridge via set of sensors for specific duration (7 min). The measured response could be in terms of acceleration, displacement and alike. In my case, I want to mimic such recording in software by placing random load (which resembles traffic loading which are random in time and values) on bridge and recording response at certain location.
I reckon I need to use Time History Analysis, but not sure how to define the function and loading condition. Any suggestion is deeply appreciated.
Cheers
RE: Traffic Load (Ambient traffic) Simulation
I suggest you use both mathematical regression and FE modeling to probable capture correlation between frequency and traffic load.
RE: Traffic Load (Ambient traffic) Simulation
Thanks for your critical comment. Surely I will consider that.
I have defined a random function in MATLAB and want to use it as random input for Time History Analysis to record the response of bridge to it in terms of acceleration. Then I will use MATLAB ToolBox/ARTeMIS for signal processing either using Frequency Domain methods (such as Peak Picking and Frequency Domain Decomposition) and Time Domain methods (such as Stochastic Subspace Identification) to extract modal parameters.
RE: Traffic Load (Ambient traffic) Simulation
However, there is Fast Non-linear Analysis available in both Bridge and SAP. The latter is a discrete modal analysis.I have never use it but I probably use it in the near future.
RE: Traffic Load (Ambient traffic) Simulation
as yo mentioned it's quite complicated to simulate such loading condition. I've heard of Fast NL analysis available within CSI software but never used. (Here's the link to how to perform this loading in software https://wiki.csiamerica.com/display/kb/FNA+applica...)
I'm interested to find out how to relate Fast NL analysis feature to ambient loading.
RE: Traffic Load (Ambient traffic) Simulation
RE: Traffic Load (Ambient traffic) Simulation
peace
Shoot for the Moon, even if U miss, U still land among Stars!
RE: Traffic Load (Ambient traffic) Simulation