Output and Background of Infinity Norm

Tips & Tricks


23 December 2014

Tips & Tricks Adrian Langhammer Results RFEM

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 the numerical analysis, as the 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 eigenvalue. In addition to the condition number, you can also 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 the decimal place accuracy of t = 15. The infinity norm value depends on units. The determined value is based on SI units.


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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

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