科研之友
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摘要
A new method for estimating the bounds of eigenvalues is presented. In order to show that the method proposed is as effective as Qiu's, all undamping spring-mass system with 5 nodes and 5 degrees of freedom is given. To illustrate that the present method can lie applied to structures which cannot Lie treated by noti-negative decomposition, a plane frame with 202 nodes and 357 beam elements is given. The results chow that the present method is effective for estimating the bounds of eigenvalues and is more common than Qiu's.
