Implementation of an Implicit Direct Time Integration Processor in the FiniteElement Code B2000

摘要

In B2000, an implicit direct time integration processor (B2IDTI) was programmed.This processor can be used for both linear and nonlinear problems. The linear part of the code was tested by carrying out an eigenfrequency and response analysis neglecting physical damping. The results of the linear response problem were compared to those obtained with the in B2000 already available modal analysis processor (B2MAP). The nonlinear part of the code was tested by carrying out a free vibration and response analysis neglecting physical damping. Further, a free vibration problem including physical damping was carried out. The test results were compared to the results obtained with the K.C. Park's time integration processor that is available in the finite element code STAGS.