A non-intrusive dynamic sensitivity-based substructure model updating method for nonlinear systems

Z Cao, H Wei, D Liang, Z Jia, J Yao, D Jiang - International Journal of …, 2023 - Elsevier
In nonlinear finite element model updating (FEMU), one of the main challenges is how to
improve the updating efficiency for large-scale structures. The computational time of …

Using novel nonlinear subspace identification to identify airfoil-store system with nonlinearity

R Zhu, D Jiang, X Hang, D Zhang, Q Fei - Aerospace Science and …, 2023 - Elsevier
The nonlinear behavior of the airfoil-store system introduces complexity to its mechanical
characteristics, making it essential to identify the system's nonlinear features. This study …

Describing function method with pointwise balancing in time domain for periodic responses of non-smooth self-excited system

Z Zheng, Z Lu, G Liu, Y Chen - Acta Mechanica, 2023 - Springer
This paper proposes a describing function method with pointwise balancing in time domain
(DFPB), to solve periodic responses semi-analytically of self-excited systems with non …

Advanced Numerical Algorithm for Non-smoothness Differential Equations: Integrating Fractional Interpolation with Predictive-Corrective Techniques

LT Ye, YM Chen, JK Liu, QX Liu - 2024 - researchsquare.com
In this study, we investigate numerical methods for non-smooth differential equations
(NSDEs), which are pivotal in simulating abrupt phenomena in natural and engineering …