从约束试验数据提取自由结构模态参数

本文为“从约束试验数据提取自由结构模态参数”提出了一个有力的方法。它仍以试验信息与理论信息相结合为基础，但它不像某些方法依赖理论信息过多，造成工程应用中的误差可能较大；同时，它又不像另一些方法依赖试验信息过多，从而导致方法在工程中实施起来异常困难。数值模拟表明，本文方法是可行的。

Extraction of free structural eigenmodes from constrained test

For extraction of free-free eigenmodes from constrained test data, a powerful and feasible method is proposed in this paper. This method is based on combination of both test and analytical information. But it neither over-relies on test information, nor is excessively dependent on analytical information. Thus it not only can simplify experimental process, but also is not excessively the influence of the error of analytical information. Numerical simulation results show that the method developed in this paper is completely feasible.