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2021-05-17

Output and Background of Infinity Norm

The "4.0 Results - Summary" table displays the infinity norm at the end of the load case results. The norm is used to estimate the largest eigenvalue of a structure. The largest eigenvalue of a structure is estimated by numerical analysis, as accurate determination can be very time-consuming.

Among other things, the largest eigenvalue can be used for determining the numerical accuracy of a calculated result value for which a condition number is required. The condition number includes the ratio between the largest and the smallest eigenvalues.

In addition to the condition number, you can determine the numerical accuracy by means of the internal accuracy, which depends on the number format used by the program. RFEM uses the double format (according to the standard IEEE 754) with a decimal place accuracy of t = 15. The infinity norm value depends on units. The determined value is based on SI units.


Author

Mr. Langhammer is responsible for development in the area of reinforced concrete structures, and provides technical support to our customers.

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