MPI–CUDA parallelization of a finite-strip program for geometric nonlinear analysis: A hybrid approach

Rakić, Predrag; Milašinović, Dragan D.; Ivanov,; Suvajdin, Z.; Nikolić, Milutin; Hajdukovic, Miroslav

doi:10.1016/j.advengsoft.2010.10.008

Cited by 15 publications

(8 citation statements)

References 10 publications

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“…It was inevitable to combine different parallelization models -MPI and OpenMP and use different sources of parallel resources (multicomputer, multiprocessormulticore, GPGPU based, or cloud available environment). Our results show that rational usage of hybrid parallelization approach to speed up the critical parts of our code contributes in significant performance improvements [9,10]. If uniformly compressed thin-walled structures undergo inelastic deformations, these structures generally sustain two sources of non-linearity (geometrical non-linearity due to large deflection and material non-linearity due to inelastic behaviour).…”

Section: Faculty Of Civil Engineering Subotica University Of Novi Samentioning

confidence: 89%

Influence of Mode Interactions on Inelastic Buckling Effective Stresses in Thin-Walled Columns Using Finite Strip Method

Milašinović¹,

Maric²,

Živanov³

et al. 2019

Zbornik GFS

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The inelastic buckling, free vibration and damage of prismatic thin-walled columns, considering two sources of non-linearity (geometrical non-linearity due to large deflection and material non-linearity due to inelastic behaviour), are analysed by implementing the semi-analytical finite strip method (FSM). A very basic continuum damage model with one damage parameter is implemented in conjunction with a mathematical material modelling approach named rheological-dynamical analogy (RDA) in order to address stiffness reduction due to inelastic behaviour. The RDA is a type of inelastic analysis, which transforms one category of very complicated material non-linear problems to simpler linear dynamical problems using modal analysis. The effective stress, as defined in the damage mechanics, is used in this paper. An analysis of damaged composite thin-walled wide-flange columns made of a polymer resin, which is reinforced with fibrous material, is carried out. Numerical examples computed by application of extensive hybrid parallelization present the influence of mode interactions on the damage variables and effective stresses in thin-walled columns.

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Section: Faculty Of Civil Engineering Subotica University Of Novi Samentioning

confidence: 89%

Influence of Mode Interactions on Inelastic Buckling Effective Stresses in Thin-Walled Columns Using Finite Strip Method

Milašinović¹,

Maric²,

Živanov³

et al. 2019

Zbornik GFS

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“…[7,9] and [12]. In this paper only short overview of the finite-strip program visualization and parallelization is presented.…”

Section: Finite-strip Program Visualization and Parallelizationmentioning

confidence: 99%

“…Some optimization strategies for providing values of integrals have been described in [9,12]. In this research, integral expressions are calculated once, independent of particular strip length, and stored in a memory during the execution process.…”

Section: Finite-strip Program Visualization and Parallelizationmentioning

confidence: 99%

“…Therefore, the integral expressions are calculated once, independent of particular strip length, and stored in a memory during the execution process [7]. Different optimization strategies for providing values of integrals have been described in [9,12]. In order to cope with dramatic increase of computation time due to coupling of all series terms in HCFSM formulation, a combined application of MPI and OpenMP parallelization methods is used.…”

Section: Introductionmentioning

confidence: 99%

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Geometric Nonlinear Analysis of Reinforced Concrete Folded Plate Structures by the Harmonic Coupled Finite Strip Method

Milašinović

Goleš

2014

Period. Polytech. Civil Eng.

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There is a great deal of RCFPS for which both the geometry and the material properties can be considered as constants along a main direction, straight or curved, while, generally, only the loading distribution may vary (e.g. thin-walled beams, cylindrical and prismatic shell roofs [2] and box-girder bridges [3,4]). In many cases, the performance of these structures is also improved by means of proper longitudinal prestressing systems. For these structures, the design process should lead to define the optimal morphology of the transversal cross-section, which means its geometry, size, shape and topology, as well as the layout of the prestressing system, described by the prestressing forces and the cables profile.In such context, the attention of this paper is focused on the optimal design of RCFPS composed by flat plates and subjected to multiple loading conditions, Fig. 1 (a). A proper modeling of these structures can be found within the framework of the FSM. As well known, this method is based on the formulation of a special class of finite elements that are as long as the structure and interconnected along the nodal lines that constitute the sides of the strips themselves. The FSM was originally developed by Cheung [1]. The well known uncoupled formulation, represents a semi-analytical finite element method (FEM). As far as linear analysis is concerned, it takes advantage of the orthogonality properties of harmonic functions in the stiffness matrix formulation.However, in the case of the geometric nonlinear analysis, the integral expressions contain the products of trigonometric functions with higher-order exponents, and therefore the orthogonality characteristics are no longer valid. All harmonics are coupled, and the stiffness-matrix order and bandwidth are pro-

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“…All harmonics are coupled, and the stiffness matrix order and bandwidth are proportional to the number of harmonics used. Originally proposed and implemented in the context of a special sequential software package [3], the HCFSM formulation has since been frequently used and validated [7,8]. The remainder of this paper is organized as follows: An overview of the finite-strip geometric nonlinear analysis is presented in Section 2.…”

Section: Introductionmentioning

confidence: 99%

Stability analysis of reinforced concrete prismatic shell structures

2013

JCE

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Stability analysis of reinforced concrete prismatic shell structures Stability analysis of prismatic reinforced concrete shells is presented in the paper. These structures are special shells for which both geometry and material properties can be considered as constant along the main direction, while only the loading distribution may vary. A semi-analytical harmonic coupled finite strip method (HCFSM) is used to solve the large deflection and post-buckling problems, or both actions simultaneously. This is particularly important for shells having large span-to-width ratios.

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MPI–CUDA parallelization of a finite-strip program for geometric nonlinear analysis: A hybrid approach

Cited by 15 publications

References 10 publications

Influence of Mode Interactions on Inelastic Buckling Effective Stresses in Thin-Walled Columns Using Finite Strip Method

Influence of Mode Interactions on Inelastic Buckling Effective Stresses in Thin-Walled Columns Using Finite Strip Method

Geometric Nonlinear Analysis of Reinforced Concrete Folded Plate Structures by the Harmonic Coupled Finite Strip Method

Stability analysis of reinforced concrete prismatic shell structures

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