Extreme Loading for Structures: Difference between revisions

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{{AdvertNotability|Product|date=SeptemberMarch 20092022}}

{{Infobox Softwaresoftware

|name = Extreme Loading for Structures

|screenshot =

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'''Extreme Loading for Structures''' ('''ELS''') is commercial structural-analysis software based on the [[applied element method]] (AEM) for the automatic tracking and propagation of cracks, separation of elements, element collision, and collapse of structures under extreme loads.<ref name="AEMTheory">{{cite journal | authors author1= Meguro, K. and |author2=Tagel-Din, H. | title = Applied element method for structural analysis: Theory and application for linear materials | journal = Structural engineeringEngineering/earthquakeEarthquake engineeringEngineering | volume = 17 | issue = 1 | pages = 21–35 | publisher = Japan Society of Civil Engineers | ___location = Japan | year = 2000 | url = http://sciencelinks.jp/j-east/article/200014/000020001400A0511912.php | id = F0028A | accessdate = 2009-08-10 | url-status = dead | archiveurl = https://web.archive.org/web/20120229032846/http://sciencelinks.jp/j-east/article/200014/000020001400A0511912.php | archivedate = 2012-02-29 }}</ref> AEM combines features of [[Finite element method]] and [[Discrete element method]] simulation with its own solver capabilities for the generation of PC-based structural analysis.

==History==

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===2009===

* ELS version 3.0 is released with complete 3D functionality.

==ELS Modeler==

In the ELS modeler the user has the ability to model using a variety of default [[List of structural elements|structural components]] such as columns, slabs, walls, windows, [[steel sections]], reinforcement and 8-node objects. Pre-stressing, cables, pre-cracking and holes can also be added to models to reflect the required attributes of structures. To aid the user in modeling, attachments such as [[DXF|*.dxf]], [[STL (file format)|*.stl]], [[DGN|*.dgn]], and [[JPEG|*.jpeg]] can be easily imported. Models can also be imported from several FEM based software programs such as [[Abaqus]], [[ANSYS]], Etabs, Gambit, Ideas, [[LS-DYNA]], [[Nastran]], Patran, [[SAP2000]], and STAAD. ELS is [[Building Information Modeling]] ([[BIM]]) compatible with a plug-in for [[Revit|Autodesk Revit Structure]], allowing users to import previously created structural components.<ref name=ELSOverview>{{cite web | author = ASI | title = Extreme Loading for Structures Software - Overview | publisher = Applied Science International | url = http://www.extremeloading.com/Overview.aspx | accessdate = 2009-08-12}}</ref>

==ELS Solver==

The solver performs multi-stage static and dynamic analysis in 2D and 3D. Static loading types include concentrated loads, [[Displacement (vector)|displacements]], [[hydrostatic pressure]]s, uniform pressures, moving loads, element removals, and line loads. Available dynamic loading types include concentrated loads, displacements, [[Earthquake|seismic loads]], uniform pressures, element removals, and moving loads. ELS comes with a predefined material library with both linear and non-linear material models that include [[steel]], [[concrete]], [[reinforced concrete]], [[glass]], [[aluminum]], [[Elasticity (physics)|elastic]], and [[Tension (physics)|tension]].{{clarify|date=November 2011}}<!-- confusing, first there is a list of materials and then "elastic" (sic) and "tension" which are concepts, not materials --><ref name="ELSOverview"/>

The '''AEM solver''' automatically calculates:

*Crack generation

*Plastic hinge formation

*Element separation

*Buckling, post buckling and large displacements

*Contact and collisions

==ELS Output Viewer==

Once the AEM solver begins, output can be immediately observed in the ELS viewer. A variety of animated diagrams, charts and files can be created for visual representation of the analysis. The ELS viewer can create the following exportable content:

*Animated diagrams:

**Internal force

**Envelope

*Animated stress-strain contours

*Load displacement curves

*Animated charts available:

**Load

**Displacement

**Stress

**Strain

**Time

**Velocity

**Acceleration

*Eigen modes

*Export to *.avi and *.bmp

*Through additional plug-ins ELS can export animation data to [[Autodesk 3ds Max]] and [[Autodesk Maya|Maya]] for use in [[visual effects]] for television and film.<ref name="ELSOverview"/>

==Applications==

ELS is currently being utilized for structural engineering analysis functions such as structural vulnerability assessment & risk mitigation, [[Progressive collapse|progressive collapse analysis]], blast analysis, demolition prediction analysis, impact analysis, [[seismic analysis]], forensic engineering, performance based design, glass performance analysis product development and visual effects.<ref name="ELSOverview"/>

==See also==