基于近完全时滞补偿方法的隐式实时混合试验方法

实时混合试验是一种新型结构抗震混合试验方法。隐式逐步积分算法虽然具有稳定性好的特点，但在实时混合试验中实施困难。文章在分析两种多自由度隐式实时混合试验方法的基础上，结合近完全时滞补偿方法，提出了一种新型隐式实时混合试验方法，并分析了该方法的性能。数值模拟表明，该方法具有较高的收敛速度和计算精度，能够同时考虑时滞补偿，能满足自由度数目较多的多自由度结构实时混合试验的要求。

Implicit Method for Real-time Hybrid Testing Based on Nearly-complete Delay Compensation Scheme

Real-time Hybrid Testing (RHT) is a novel hybrid testing method for evaluating structural seismic performance. Even though implicit time-stepping approaches exhibit better stability, their applications to RHT are limited due to their difficulties. This paper firstly analyses limitations of two existing implicit RHT schemes for Multi-Degree of Freedom (MDoF) structures, and then proposes a new implicit RHT based on the nearly-complete delay compensation developed by authors formerly. Theoretical performance analysis and numerical simulations are performed following that. Numerical simulations show that the proposed scheme is endowed with better convergence speed and accuracy and incorporated delay compensation, which indicate that it is more suitable to RHT for MDoF systems.