The next generation computational technology for nonlinear dynamics with finite deformation and contact/impact

Abstract eng:
The presentation describes a novel computational technology with multi-scale physics and multi-timescale integrators for general applications involving contact-impact for finite deformation applications involving large nonlinear strains and deformations. The technology presented pushes the boundaries of existing methods to improved levels of sophistication so as to enable the solution of realistic and practical problems. Many unresolved issues plague the research community at large as related to finite deformation/ large deformation physics based simulations. In several cases, existing commercial codes such as ABAQUS, LSDYNA , etc., exhibit certain limitations for finite deformations, and the presentation particularly demonstrates and circumvents several existing limitations. Low, high, and hyper velocity can be effectively handled. The multi-time scale features provides a fusion of computational technology such as explicit and implicit technologies all fused together in the same computational environment to handle not only local damage but also to assess the global dynamic response of the structural systems. Verification and validation are particularly emphasized and the robustness of the physics based simulation environment to handle practical structural systems is noteworthy.

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