Analytical methods and recent advances in computation for the dynamics of continuous systems
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Abstract
Continuous systems such as beams, plates, shells, and membranes are distributed-parameter systems whose dynamic behavior is governed by partial differential equations. Their analysis is essential for predicting vibration, resonance, stability, and transient structural responses, yet exact solutions are often difficult to obtain because of complex geometries, material nonlinearities, and boundary conditions. This study reviews analytical methods and recent computational advances in continuous-system dynamics using the PRISMA 2020 framework. A total of 58 studies published between 2018 and 2026 were analyzed, covering analytical and semi-analytical techniques, conventional numerical discretization, spectral element methods, isogeometric analysis, model-order reduction, physics-informed machine learning, and neural operators. The findings show that classical analytical solutions and perturbation methods remain essential as verification benchmarks and for nonlinear resonance analysis. Finite element and high-order structure-preserving formulations effectively handle complex geometries, while nonlinear model reduction using spectral submanifolds and quadratic manifolds substantially reduces computational cost. Scientific machine learning and neural operators enable rapid prediction for parametric differential-equation families, although their reliability strongly depends on training-data representativeness and physical consistency outside the training regime.
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