Abstract
Based upon legitimate variational principles, one microscopic-macroscopic finite element formulation for linear dynamics is presented by Hybrid Stress Finite Element Method. The microscopic application of Geometric Perturbation introduced by Pian and the introduction of infinitesimal limit core element (Baby Element) have been consistently combined according to the flexible and inherent interpretation of the legitimate variational principles initially originated by Pian and Tong. The conceptual development based upon Hybrid Finite Element Method is extended to linear dynamics with the introduction of physically meaningful higher modes.
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Sumihara, K. Extension to linear dynamics for hybrid stress finite element formulation based on additional displacements. Computational Mechanics 23, 482–487 (1999). https://doi.org/10.1007/s004660050427
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DOI: https://doi.org/10.1007/s004660050427