Extreme Loading for Structures is one of the tools I use daily for my blast engineering studies. It helps me quantify the effects of a terrorist or accidental explosion on a structure, and I can then show its consequences to my clients with the Extreme Loading Results Viewer. ELS then enables me to design potential reinforcements for the exposed structure without going through long and expensive field tests. This process is made even easier by the software’s user-friendliness and by the fact that the GUI can be customized. Thus, the version of ELS I am using is unique because I can enhance my workflow.
The implosion went exactly the way as planned and the client was very pleased with the accuracy.We feel that simulation is one tool that helps predict mistakes that otherwise could happen.
I have been using ELS software for the past six months for my PhD research on the progressive collapse analysis of reinforced concrete buildings. I have found that the software is very efficient and reliable. The technical support is excellent and I have always answers to my questions, which has helped me to explore the full capability of the software and to advance in my research. I recommend this software both for research and practical applications for the performance of buildings subjected to blast loads.
The main advantage of Extreme Loading®for Structures is its use of the Applied Element Method (AEM), a combination of the features found in FEM and DEM. This allows users to quickly and accurately model then simulate the behavior of a structure beginning with initial loading, followed by automatic initiation and propagation of cracks, to element separation, until total collapse of the structure.
3D collapse simulation software such as Extreme Loading® from ASI is an impressive tool that is going to become more prevalent, particularly for ‘pulling’ structures (this is where a structure is weakened and pulled to the ground) and for ‘blowdowns’ (demolition by the controlled use of explosives). ASI’s Applied Element Method (AEM) based technology is the only analysis method for accurately analysing the behaviour of a structure during a critical failure and the resultant progressive collapse. The software will analyse and predict the linear, nonlinear, and failure modes of structures in a 3D environment. It will analyse and play out different ‘key element’ removal scenarios. Collapse simulation is an excellent way to demonstrate to clients exactly what to expect and it can be used during the demolition design process to check and refine collapse mechanisms.
This research has shown that given reliable input and an accurate demolition scenario, ELS is capable of accurately simulating the collapse behavior for reinforced concrete structures. The results show that local, regional, and global collapse behaviors, as well as the debris fields, were modeled with substantial accuracy.
Each demolition studied using this software increases our understanding of the event, which, in turn, leads to the longer term objectives of improving the design and safety of new structures.
It went off exactly as we were told it would happen, and as the computer model simulation show it would.
ELS was of great benefit to my project, and I was very impressed with how quickly the basic concepts of the program could be picked up relative to some of the commercial FEM programs available.