Natural Frequency Identification
This course will be a practical guide to the use of natural frequency prediction and computation to gain an intuitive understanding of the structure being analyzed. Both classical and finite element based approaches to frequency determination will be covered with the emphasis on understanding the driving factors of dynamic response. Kinetic energy, strain energy, and modal effective mass will be described through the use of real world engineering examples.
This course will cover the topic of random vibration in engineering structures and how to predict responses to arbitrary random inputs. Random vibration power spectral density (PSD) inputs will be described with common inputs for various aerospace applications. The computation of rms and positive crossings will be described with related software tools to aid in the use of numerical results to compute fatigue life, maximum expected responses, and electronic component life.
The details of pyro shock input and response will be covered with the aerospace designer and analyst in mind. Typical shock inputs for military and space applications will be covered and described. Typical design approaches and isolation methods will be described in addition to the state-of-the-art analysis approaches in use today.