From the course: SOLIDWORKS Simulation: Dynamic Analysis

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Introduction to normal modes analysis

Introduction to normal modes analysis - SOLIDWORKS Tutorial

From the course: SOLIDWORKS Simulation: Dynamic Analysis

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Introduction to normal modes analysis

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- [Instructor] In this video, we're going to look at an introduction to normal modes analysis. And the very first question is, what is normal modes analysis? Now we find there's quite a few terms used to describe the same thing. We find we've called it eigenvector analysis, eigenvalue analysis. SOLIDWORKS calls this a frequency analysis. The terminology can be very confusing. One way to clear up the confusion is to look at the objectives of the analysis. The first objective is to find all the resonant or natural frequencies within a range. And these are defined in cycles per second or hertz, or occasionally in radians per seconds or rad per second. The second objective is to find the mode shapes at each natural frequency. Now these are only shapes. There's no actual unit involved, and there's no amplitude. Because we're not applying a force input, so we can't get a scaled response coming out. We saw in the previous video that the full equation of motion was defined by an internal…

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