There are four different methods we want to have a look at: Time History, Harmonic, Random Vibration and Response Spectrum.<\/p>\n
Let\u2019s start with a short recapitulation of the basic concept:<\/p>\n Preparation<\/strong><\/p>\n There are some important things one should take care of when starting to work with linear dynamics, e.g. to include enough eigenfrequencies to have a representative model or to define a proper damping:<\/p>\n Example:<\/strong> Steel comb of a music box<\/p>\n With this simple model we will apply all four kinds of linear dynamic techniques:<\/p>\n 1. Time History<\/strong><\/p>\n This study type is used for transient problems to analyze e.g. the response during and after a short-time load.<\/p>\n Input:<\/u> Time-dependent excitation, e.g. impact load (see standards e.g. MIL-STD-810 G, Method 516.5)<\/p>\n Output:<\/u> Time-dependent response e.g. accelerations, velocities, displacements, \u2026<\/p>\n 2. Harmonic<\/strong><\/p>\n A harmonic study reveals the response when a system is exposed to a certain range of excitation frequencies (think e.g. of a motor working at different speed).<\/p>\n![\"SW_SIM_LD_Solutions\"](\"http:\/\/blogs.solidworks.com\/tech\/wp-content\/uploads\/sites\/4\/SW_SIM_LD_Solutions.png\")
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