| Popis: |
The Benfield-Hruda component mode synthesis (CMS) method is commonly used in the coupled loads analysis (CLA) community because it provides a very convenient means of applying component mode damping to selected components. However, since it is a CMS method, it results in approximate, rather than exact, system modes. In this paper, we will show that the approximation in the Benfield-Hruda modes can result in unacceptable errors in the calculation of residual vectors, resulting in incorrect quasi-static responses. A solution is proposed and demonstrated. This uses the Benfield-Hruda method for damping synthesis but not to calculate the system modes. It results in a much more robust convergence of results and eliminates the issue with residual vectors. |
