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Advanced Numerical modelling and Structural Health Monitoring with STKO and OpenSees

Guido Camata
Seminar Speaker
Guido Camata
Seminar Date
Wednesday, Feb 8, 2023 - 3:00 pm
Seminar Location - Room
SME 248
Speaker Bio

Dr Camata was awarded a  Master degree in Civil  engineering from the University  of Bologna, Italy. He worked at  Intelligent Sensing for  Innovative Structures (ISIS) in  Winnipeg, Canada. He was  awarded a PhD in Structural  Engineering at the University of  Colorado at Boulder, USA, where he was an adjunct  professor from 2011 to 2018. His research experience  includes experimental and  numerical work, and he has  more than 100 publications among international journals,  books and conferences. He is the founder and  managing partner of ASDEA  and has broad experience as a  structural designer, he has  been involved with the design  of new structures and  assessment of a wide range of  existing structures.

 

Nonlinear Finite Element Analyses (NLFEA) can be used to accurately assess  the behavior of complex structural details and systems in cases where  standards cannot provide reliable verification or computational models.  However, the application of these advanced methods to real problems  requires assumptions that can have a decisive impact on the results and has  raised several questions on the procedures defined in the codes and on the  selection of the appropriate calculation methodologies, in particular: 

-NLFEA requires much experience and expertise, which to date is still  lacking to make these advanced analyses routine for structural  assessment and design,  

-There is a need to develop reliable and efficient models and tools to  manage and interpret the huge amount of complex input and output data  generated by the analyses of actual structures. 

This talk presents the software Scientific ToolKit for OpenSees (STKO) , which  was developed to provide an advanced interface for NLFEA of real  structures, and illustrates some of the new features implemented in the OpenSees for structural and Soil Structure Interaction problems. Several  applications and examples will be shown. In addition, MonStr, a revolutionary Digital Twinning technology that uses  digital sensors, artificial intelligence, and STKO will be presented. The  system creates a digital replica updated in real-time to evaluate the health  conditions of the infrastructure and predict future response of the  infrastructure by simulating abnormal stress or damage conditions for  maintenance, repair, and reinforcement. The artificial intelligence  algorithms allow Optimal Sensor Placement (OSP) and model calibration.  They also interpret the damage and emit alarm signals that are then checked  against the finite element model to assess whether the signal is a false  positive.  


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