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Structural modelling process: Difference between revisions

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==== Modelling Review Process ====
==== Modelling Review Process ====
[[File:Basic-mod-rev.png|thumb|400x400px|Figjure 3  Basic modelling review process]]
[[File:Basic-mod-rev.png|thumb|400x400px|Figure 3  Basic modelling review ]]


Figures 3 shows a basic review process and Figure 4 represents a full review process.  The former would be used in a standard context that is familiar to those working on the type of model.  The latter would be used in an innovative situation where there might be significant uncertainty, complexity and/or where the context is safety critical - e.g. nuclear power installations. Results verification is always needed but in standard contexts validation may not need deep consideration and sensitivity analysis may not be required.  In a complex innovative situation very careful attention to all the review activities may be essential.


Figures 3 shows a basic review process and Figure 4 represents a full review process.  The former would be used in a standard context that is familiar to those working on the type of model.  The latter would be used in an innovative situation where there might be significant uncertainty, complexity and/or where the context is safety critical - e.g. nuclear power installations. Results verification is always needed but in standard contexts validation may not need deep consideration and sensitivity analysis may not be required.  In a complex innovative situation very careful attention to all the review activities may be essential.




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* Set up the data with a simple loadcase (a checking loadcase) and carry out a results verification.  
* Set up the data with a simple loadcase (a checking loadcase) and carry out a results verification.  


[[File:Full-mod-rev.png|thumb|400x400px|Figure 4  Full modelling review]]
'''Ongoing review'''
'''Ongoing review'''


Continue with development/production runs.   Do quick qualitative verification on a regular basis and further quantitative checks as appropriate.  Continue to consider model validation issues if the model is altered and to interpret validation information from the results if practical.
Continue with development/production runs.    


As appropriate, carry out sensitivity analyses to develop understanding of the behaviour of the system being modelled and to contribute to the validation analysis.
* Do quick qualitative verification on a regular basis and further quantitative checks as appropriate. 
 
* Continue to consider model validation issues if the model is altered and to interpret validation information from the results if practical.
Continually challenge the adequacy of the inputs to and the outputs from the process.  
* As appropriate, carry out sensitivity analyses to develop understanding of the behaviour of the system being modelled and to contribute to the validation analysis.
* Continually challenge the adequacy of the inputs to and the outputs from the process.  


'''Final review'''
'''Final review'''
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'''''Bibliography'''''
'''''Bibliography'''''Macleod I A  (2005) ''Modern Structural Analysis'' Thomas Telford Ltd.
 
 
Macleod I A  (2005) ''Modern Structural Analysis'' Thomas Telford Ltd.


Macleod I A and Weir A (2016) ''Principles for Computer Analysis of Structures,'' Essential Knowledge Text No 14.  Institution of Structural Engineers
Macleod I A and Weir A (2016) ''Principles for Computer Analysis of Structures,'' Essential Knowledge Text No 14.  Institution of Structural Engineers