Nondestructive construction error detection in large space structuresContinuum modeling of large space structures is extended to the problem of detecting construction errors in large space structures such as the proposed space station. First-order dynamic sensitivity equations for structures involving eigenfrequencies, modal masses, modal stiffnesses, and modal damping are presented. Matrix equations relating changes in element parameters to dynamic sensitivities are summarized. The sensitivity equations for the entire dynamical system are rearranged as a system of algebraic equations with unknowns of stiffness losses at selected locations. The feasibility of the formulation is numerically demonstrated on a simply-supported Euler-Bernouilli beam with simulated construction defects. The method is next extended to large space structures modelled as equivalent continua with simulated construction defects.
Document ID
19880044156
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Stubbs, Norris (Texas A & M University College Station, United States)
Broome, Taft H. (Howard University Washington, DC, United States)
Osegueda, Roberto (Texas, University El Paso, United States)