MSC Nastran Results - CONM2 and CELAS1 - Natural Frequencies, Mode Shapes, Spring Mass 

The goal of this exercise is to inspect the natural frequencies and mode shapes of a spring mass system.
Source of Exercise
Problem 14: Normal Modes, Point Masses and Linear Springs
Patran Reference Manual, Part 6: Results Postprocessing, Chapter 15 - Verification and Validation

Наука