US7188039B2
University of Texas System
Apparatus, systems, and methods are disclosed to solve an equation associated with a structure of the form {−ω 2 M R +iωB R +[(1+iγ)K R +i(K 4R )]}Y=F R , wherein ω is a time-harmonic excitation frequency, M R is a reduced form of a symmetric mass matrix M, B R is a reduced form of a viscous damping matrix B, γ …