Structural Dynamics Analysis at ISE

ISE is a recognized expert in the field of structural and soil dynamics having developed several cutting-edge techniques for the analysis of these types of problems. If it has mass and vibrates, we can develop an analytical solution for it, and apply it empirically in the field. We’ve examined all manner of surface and in-situ transit ground motion (railways, roadways, subways), construction site impacts, historical building preservation, random vibration, forced motion (modal) vibration, and blasting prediction and monitoring, ranging from small construction projects to underground atomic testing.

ISE maintains extensive capabilities in the field of structural dynamics having worked with solid and fluid mechanical systems, including seismic propagation and fluid-structure interaction problems, including the development of new predictive theories.

Typical services we provide within this discipline include the following:

  • Continuous and Normal Modes Analysis.
  • Experimental Modal Analysis.
  • Fast Fourier Transform (FFT), Discrete Fourier Transform (DFT), and discrete time series analyses.
  • System Identification modeling, experimental damage detection and monitoring.
  • Structural risk testing / Historic structural monitoring and protection.
  • Finite Element and Boundary Element Analyses.
  • Impulsive response design and mitigation.

What's New at ISE...

Modal Analysis Services Available at ISEModal analysis is the experimental determination of the vibrational properties (i.e., normal modes) of a physi...
 Lots of people have heard of the Horton Grand Hotel in downtown San Diego, CA. Here\'s a view of the hotel that not too many people see - a view from...
       ISE 2027 Statement of Qualifications (SOQ)Click on the image to the left to view our Statement of Qualifications (32.4 MB) as a PDF. You c...
The following article is an opinion piece that reflects the scientific thoughts of the author. It is my opinion based upon my review of the science an...
Laboratory Shake Table Testing at ISEISE houses a complete dynamic analysis laboratory consisting of an APS Dynamics long stroke shake table, capable...
ISE is currently developing a robust method for the determination of structural defects within laminated composite aerospace structures. The current m...
ISE\'s Noise Monitoring & Noise Control SolutionsISE specializes in custom noise control and monitoring solutions for every imaginable industry app...
Phase I ESA\'s & Environmental Due DiligenceISE provides a broad suite of environmental site assessment and due diligence services geared towards c...
The ISE Rayleigh Wave (R-Wave) seismic vibration prediction model hit another milestone in 2011 in development by being able to accurately predict sur...
Here\'s a photo from the archives of the Olivenhain Dam inundation area circa 1998 prior to construction of the dam. ISE took this photo during some e...
Electromagnetic Pollution Control at ISEISE provides a complete suite of electromagnetic field (EMF) and Radio Frequency (RF) services designed to det...
Lighting & Photometric AssessmentsISE provides a complete range of lighting and photometric services geared towards commercial and industrial comp...
Structural Dynamics Analysis at ISEISE is a recognized expert in the field of structural and soil dynamics having developed several cutting-edge techn...
Environmental Impact ReportingAll of ISE’s technical services are available in a variety of environmental formats to satisfy local, state, and feder...
Environmental Noise Control at ISEISE provides a full spectrum of acoustical consulting services necessary for compliance with environmental regulatio...
Architectural Acoustics at ISEISE is one of only a small handful of firms offering a complete suite of acoustical engineering services tailored specif...
Expert Witness & Litigation AssistanceAt the heart of any forensic problem involving the laws of physics are two fundamental quantities: the path ...
Computational Fluid Dynamics at ISEISE are experts in the field of computational fluid dynamics (CFD) and wave propagation analysis. We utilize, and h...
The current version of the ISE Industrial Source Model (IS3) is sure to make the competitors cringe. Version 3.9 touts some highly advanced features s...
We\'re not sure how well this works, but you have the give the City of San Francisco a \'A\' for effort.This sign is located at the bottom of Lombard Str...

Featured Video Clip (Shock Wave)

A video taken by ISE showing the supersonic expansion of high pressure natural gas in a pipeline. 

The shock wave is clearly visible at the 1:00 min mark as a white cloud above the end of the pipe and produces an acoustic overpressure of close to 140 dB - which is as loud as a rocket engine.