Patent ID: 7925475
Filing Date: 2011-04-12
Classification: G06F

Abstract:
1. A method of designing a structure, the method comprising: receiving one or more user-selected design parameters; inputting the design parameters to a parametric model of the structure; representing one or more load conditions as one or more input power spectral density (PSD) values that define one or more excitation conditions, applying one or more boundary conditions and the one or more input PSD values to the model to simulate a response of the structure to the one or more load conditions; based on a type of the one or more input PSD values representing at least one of the one or more load conditions, selecting a modal analysis method; analyzing the simulated response using the selected analysis method to obtain power spectral density (PSD) values representing nodal displacement, nodal acceleration, nodal velocity, and element stress for user-selected structural elements of the model; averaging at least some of the obtained PSD values over a user-selected frequency range to evaluate effects of excitation-structural coupling on the structure; and based on the averaged PSD values, adjusting the design parameters for convergence toward an optimized design for the structure; the method performed by one or more processors and memory.