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Non-Intrusive In-Plane-Out-of-Plane Separated Representation in 3D Parametric Elastodynamics

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TLDR
The 3D complexity is reduced to 2D, the parameters included naturally into the solution, and the procedure applied on a discretization performed with a standard software, which taken together enable real-time engineering.
Abstract
Mesh-based solution of 3D models defined in plate or shell domains remains a challenging issue nowadays due to the fact that the needed meshes generally involve too many degrees of freedom. When the considered problem involves some parameters aiming at computing its parametric solution the difficulty is twofold. The authors proposed, in some of their former works, strategies for solving both, however they suffer from a deep intrusiveness. This paper proposes a totally novel approach that from any existing discretization is able to reduce the 3D parametric complexity to the one characteristic of a simple 2D calculation. Thus, the 3D complexity is reduced to 2D, the parameters included naturally into the solution, and the procedure applied on a discretization performed with a standard software, which taken together enable real-time engineering.

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Citations
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The Variational Theory of Complex Rays for the circulation of medium-frequency vibrations: application to acoustics and transient analysis

TL;DR: In this article, a new approach called the "variational theory of complex rays" (VTCR) is developed for calculating the vibrations of weakly damped elastic structures in the medium frequency range.
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Proper Generalized Decomposition for Parametric Study and Material Distribution Design of Multi-Directional Functionally Graded Plates Based on 3D Elasticity Solution.

TL;DR: In this paper, the Proper Generalized Decomposition (PGD) technique is adopted to solve the 3D elasticity problems in a high-dimensional parametric space, which is an a priori model order reduction technique that reduces the solution of 3D partial differential equations into a set of 1D ordinary differential equations.
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Structural health monitoring of 2D plane structures

TL;DR: This paper presents the application of the observability technique for the structural system identification of 2D models where unknown variables appear both in the numerator and the denominator of the stiffness matrix system, making the problem non-linear and impossible to solve.
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Multiparametric modelling of composite materials based on non-intrusive PGD informed by multiscale analyses: Application for real-time stiffness prediction of woven composites

TL;DR: In this paper , a multiparametric solution of the stiffness properties of woven composites involving several microstructure parameters is performed, based on offline pre-computed solutions generated through a full-field multiscale modeling, which approximates the multidimensional solution as a sum of products of one-dimensional functions each depending on a single variable.
References
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Journal ArticleDOI

A Method of Computation for Structural Dynamics

TL;DR: Method is capable of application to structures of any degree of complication, with any relationship between force and displacement, from linear elastic behavior through various degrees of inelastic behavior or plastic response, up to failure.
Journal ArticleDOI

A Method of Computation for Structural Dynamics

TL;DR: In this paper, the method is capable of application to structures of any degree of complication, with any relationship between force and displacement, from linear elastic behavior through various degrees of inelastic behavior or plastic response, up to failure; any type of dynamic loading, due to shock or impact, vibration, earthquake, or nuclear blast can be considered.
Journal ArticleDOI

Conserving energy and momentum in nonlinear dynamics: A simple implicit time integration scheme

TL;DR: In this paper, a simple implicit time integration scheme for the transient response solution of structures when large deformations and long time durations are considered is proposed, which is a good candidate for practical analyses.
Book

The Proper Generalized Decomposition for Advanced Numerical Simulations: A Primer

TL;DR: The present text is the first available book describing the Proper Generalized Decomposition (PGD), and provides a very readable and practical introduction that allows the reader to quickly grasp the main features of the method.
Journal ArticleDOI

PGD-Based Computational Vademecum for Efficient Design, Optimization and Control

TL;DR: A new paradigm in the field of simulation-based engineering sciences (SBES) to face the challenges posed by current ICT technologies is addressed, by combining an off-line stage in which the general PGD solution, the vademecum, is computed, and an on-line phase in which real-time response is obtained as a result of the queries.
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