For the first case,the self-characteristics of back analysis must be considered.In back analysis,the unreasonable modality is not only helpless for the load identification,but also interferefering...

• 大量算例表明,采用本文提出的准则和公式可以防止因模态选取不当而产生的伪解,避免计算中的数值病态,明显提高了动态载荷识别的成功率和精度。