A parallel non-invasive mixed domain decomposition - Implementation and applications to mechanical assemblies

Oumaziz, Paul; Gosselet, Pierre; Boucard, Pierre-Alain; Guinard, Stéphane

doi:10.1016/j.finel.2019.01.004

Cited by 6 publications

(6 citation statements)

References 32 publications

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“…Remark 4 : It may also be noticed that our method appears compatible with previous works performed regarding the parallel computation of nonlinear problems using Code_Aster (Duval et al , 2016; Oumaziz et al , 2019). As a result, the use of our strategy in combination with such works should allow the parallel computation of nonlinear IGA using Code_Aster .…”

Section: Extension To Nonlinear Analysissupporting

confidence: 80%

“…This appears of crucial interest regarding industrial FE environments as the access to the whole code is not needed and the FE routines that may be highly optimized are not touched. In that sense, the proposed method lies in the family of so-called non-invasive (also denoted non-intrusive ) methods that have been recently applied to local-global coupling (Gendre et al , 2009; Bouclier et al , 2016; Bouclier et al , 2017), domain decomposition (Duval et al , 2016), contact problems (Oumaziz et al , 2017; Oumaziz et al , 2019), transient dynamics analysis (Bettinotti et al , 2014) and stochastic partial differential equations (Chevreuil et al , 2013). Their ultimate goal is then to tackle real industrial applications (Guinard et al , 2018) for real aeronautical structures.…”

Section: Introductionmentioning

confidence: 99%

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Non-invasive implementation of nonlinear isogeometric analysis in an industrial FE software

Tirvaudey

Bouclier

Passieux

et al. 2019

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Purpose The purpose of this paper is to further simplify the use of NURBS in industrial environnements. Although isogeometric analysis (IGA) has been the object of intensive studies over the past decade, its massive deployment in industrial analysis still appears quite marginal. This is partly due to its implementation, which is not straightforward with respect to the elementary structure of finite element (FE) codes. This often discourages industrial engineers from adopting isogeometric capabilities in their well-established simulation environment. Design/methodology/approach Based on the concept of Bézier and Lagrange extractions, a novel method is proposed to implement IGA from an existing industrial FE code with the aim of bringing human implementation effort to the minimal possible level (only using standard input-output of finite element analysis (FEA) codes, avoid code-dependent subroutines implementation). An approximate global link to go from Lagrange polynomials to non-uniform-rational-B-splines functions is formulated, which enables the whole FE routines to be untouched during the implementation. Findings As a result, only the linear system resolution step is bypassed: the resolution is performed in an external script after projecting the FE system onto the reduced, more regular and isogeometric basis. The novel procedure is successfully validated through different numerical experiments involving linear and nonlinear isogeometric analyses using the standard input/output of the industrial FE software Code_Aster. Originality/value A non-invasive implementation of IGA into FEA software is proposed. The whole FE routines are untouched during the novel implementation procedure; a focus is made on the IGA solution of nonlinear problems from existing FEA software; technical details on the approach are provided by means of illustrative examples and step-by-step implementation; the methodology is evaluated on a range of two- and three-dimensional elasticity and elastoplasticity benchmarks solved using the commercial software Code_Aster.

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Section: Extension To Nonlinear Analysissupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Non-invasive implementation of nonlinear isogeometric analysis in an industrial FE software

Tirvaudey

Bouclier

Passieux

et al. 2019

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“…Both search directions H and h are the parameters of the method. One can interpret h as an interface rigidity [18]. The computation of the R operator comes directly from the hosting software as a black-box.…”

Section: Kinematic Conditions and Equilibrium Equationmentioning

confidence: 99%

“…Another point lies in the management of time-dependent non-linear problems with ROM methods. In this context, the LATIN-PGD method [13,14] is a worthwhile one, which has been the subject of many works highlighting its assets: ostensible reduction of computation time [15,16], construction of virtual charts [7], ability to address all types of non-linearities [17,18] among others. Hence, the LATIN-PGD method is attractive to Siemens Digital Industries Software, as a promising tool in the Digital Twins landscape.…”

Section: Introductionmentioning

confidence: 99%

Industrial Digital Twins based on the non-linear LATIN-PGD

Barabinot

Scanff

Néron

et al. 2021

Adv. Model. and Simul. in Eng. Sci.

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Digital Twins, which tend to intervene over the entire life cycle of products from early design phase to predictive maintenance through optimization processes, are increasingly emerging as an essential component in the future of industries. To reduce the computational time reduced-order modeling (ROM) methods can be useful. However, the spread of ROM methods at an industrial level is currently hampered by the difficulty of introducing them into commercial finite element software, due to the strong intrusiveness of the associated algorithms, preventing from getting robust and reliable tools all integrated in a certified product. This work tries to circumvent this issue by introducing a weakly-invasive reformulation of the LATIN-PGD method which is intended to be directly embedded into Simcenter Samcef$$^{\hbox {TM}}$$ TM finite element software. The originality of this approach lies in the remarkably general way of doing, allowing PGD method to deal with not only a particular application but with all facilities already included in such softwares—any non-linearities, any element types, any boundary conditions...—and thus providing a new high-performance all-inclusive non-linear solver.

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“…To overcome the one-way method drawbacks, some papers [18]- [21] propose to add a macromodel correction step in order to obtain a full iterative procedure. It was shown that the two-way method efficiently solves the generic structural mechanic problem [18], large assemblies [19], fuels [20], and nuclear reactors in [21]. However, insufficient or no interest whatsoever has so far been given to the implementation of the two-way method in multiscale modeling of power IC, for assessing the thermomechanical local plasticity.…”

Section: Introductionmentioning

confidence: 99%

A Novel Multi-Scale Method for Thermo-Mechanical Simulation of Power Integrated Circuits

Bojita

Purcar

Simon

et al. 2022

IEEE J. Electron Devices Soc.

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During development of power IntegratedCircuits (IC), several iterations between the design and test/ measurement steps are performed. Computer-aided engineering significantly shortens the product development process because the numerical simulations can identify and remediate most deficiencies during the design stage. The recent IC manufacturing technologies lead to ca. 10 4 -order scale separation between transistor cell details and the device active area, resulting in very complex IC models. For the IC complexity to be overcome, advanced multi-scale analysis methods are required to perform accurate simulations in a decent time (order of hours). This paper proposes an advanced and enhanced multi-scale simulation method for the thermo-mechanical analysis of power ICs. The computational IC structure is automatically generated from a Cadence layout and partitioned into far-field and homogenized regions -the macro-model. Detailed localized micro-scale sub-models are assigned to limited portions of the homogenized region. The two-way simulated data transfer between the homogenized macro-model and the micro sub-models is one multi-scale approach novelty proposed in this paper. The method is validated on a real test chip structure presented in literature. The proposed multi-scale approach in conjunction with the two-way macro-micro data transfer lead to similar accuracy in the prediction of defect location, yet with significant simulation time -and computational resource reduction (CPU time and RAM usage reduced by almost 80% and 60% respectively) compared to the method used as reference.

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A parallel non-invasive mixed domain decomposition - Implementation and applications to mechanical assemblies

Cited by 6 publications

References 32 publications

Non-invasive implementation of nonlinear isogeometric analysis in an industrial FE software

Non-invasive implementation of nonlinear isogeometric analysis in an industrial FE software

Industrial Digital Twins based on the non-linear LATIN-PGD

A Novel Multi-Scale Method for Thermo-Mechanical Simulation of Power Integrated Circuits

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