Queston:
One of the following has occurred:
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- Have 2 separate models with identical input, but the results are different while using the same version
OR
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- Have 2 separate models with identical input, but the results are same while using the same version
OR
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- Same model opened in 2 different versions of the application but has different results in each version
Why has this happened and how to fix?
Answer:
In every instance, the first action should always be to conduct a comprehensive review of the model input to ensure that the model and all loads are accurately depicted within the program. It is important to note that the application can relies upon the input data supplied by the user for analysis and exported file. Should the input be incorrect, the results of the analysis and the output files will also be incorrect. Again, review the input.
Whenever comparing 2 files to one another, suggest the following approach:
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- Open model #1, and generate a complete model output report.
- Open model #2, and generate a complete model output report.
- Use a software application (ex. Beyond Compare, Ultra Compare, etc..) to compare the two files to one another. The software will quickly indicate all the similarities and all the differences between the 2 files.
- Use these indications to guide your investigation (ex. should this setting or profile be the same or different between these 2 models?)
- Validate all instances
- Make corrections in the original model as needed.
- when review is complete, analyze both models, and repeat steps 1 -6 again until satisfied.
Advise
- With different / same Load case results, confirm load case profile (ex. Wind, water, blast, etc..) are referenced to the correct elevation in the model.
- Is the ground elevation of the model, truly the ground elevation in a user profile?
- Is the equipment correctly located within the load case profile (ex. height of tank relative to the wind / blast profile)
- Is the water surface correctly established?
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