Enhancing Robustness and Efficiency in Computational Mechanics

The recent developments in the research area of computational mechanics and numerical methods have shown a strong focus on enhancing the robustness, efficiency, and accuracy of finite element and discontinuous Galerkin methods. There is a notable trend towards the development of mixed finite element methods that are parameter-robust, addressing issues such as locking phenomena and nearly incompressible regimes. These methods are being applied to a variety of problems, including linear Cosserat elasticity, unsteady Stokes equations, and parameterized stochastic Navier-Stokes flow problems, demonstrating their versatility and effectiveness.

Another significant direction is the pursuit of entropy-stable and non-oscillatory schemes for hyperbolic conservation laws, which aim to control entropy production and suppress spurious oscillations, crucial for accurate simulations of fluid dynamics and structural mechanics. The integration of peridynamic models with classical continuum mechanics to simulate structural failure more efficiently is also gaining traction, offering a promising approach to improve computational efficiency without compromising accuracy.

In the realm of structural dynamics, there is a growing interest in adaptive coupling strategies and the impact of mass lumping on discrete frequencies, particularly in the context of immersogeometric analysis. Additionally, innovative methods for excitation harmonization and dynamic modeling of large deployable mesh reflectors are being developed, addressing practical challenges in structural testing and space applications.

Noteworthy papers include one that proposes a new variational formulation for the Stokes problem using T-coercivity, stabilizing unstable finite element pairs and improving numerical approximations, and another that introduces a mimetic approach for computing divergence-free metric terms in DGSEMs, essential for free-stream preservation and entropy stability on curvilinear grids.

Sources

Intrinsic mixed finite element methods for linear Cosserat elasticity and couple stress problem

Mixed finite element projection methods for the unsteady Stokes equations

Explicit T -coercivity for the Stokes problem: a coercive finite element discretization

Mimetic Metrics for the DGSEM

A Localized Orthogonal Decomposition Method for Heterogeneous Stokes Problems

Two Robust, Efficient, and optimally Accurate Algorithms for parameterized stochastic navier-stokes Flow Problems

Non-oscillatory entropy stable DG schemes for hyperbolic conservation law

Adaptive coupling of peridynamic and classical continuum mechanical models driven by broken bond/strength criteria for structural dynamic failure

An iteration-free approach to excitation harmonization

A theoretical study on the effect of mass lumping on the discrete frequencies in immersogeometric analysis

Dynamic Modeling and Vibration Analysis of Large Deployable Mesh Reflectors

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