midas NFX nafem benchmark

NAFEMS Benchmark: Free annular membrane

Problem Description

Figure 1 shows an unconstrained annular membrane problem. Membrane elements are employed to obtain the lowest vibration frequencies except for the rigid body modes. The results are compared with the reference values provided in the NAFEMS benchmarks.

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Figure 1. Free annular membrane model

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Figure 2. Vibration mode shapes

To try this problem by yourself, you can download NFX 30 day free trial and model file.