An efficient platform HSNAS(GPU) for nonlinear static and dynamic analysis of reinforced concrete frames&mdash;Ⅰ. Program development

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (14) : 47-53.

An efficient platform HSNAS(GPU) for nonlinear static and dynamic analysis of reinforced concrete frames—Ⅰ. Program development

LI Hong-yu, TENG Jun, LI Zuo-hua

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Abstract

The traditional serial computation platform has some disadvantages such as low accuracy and dramatically high time consuming, which hindered the development of structural nonlinear dynamics analysis. In order to achieve a higher computing accuracy and save calculation time in the process of nonlinear dynamic analysis of reinforced concrete (RC) frames, a simulation platform HSNAS(GPU) based on graphics processing unit (GPU) was developed. For static analysis, a GPU-based incremental displacement algorithm was introduced to deal with negative stiffness problems, and parallel Preconditioned Conjugate Gradients (PCG) solver was developed. For dynamic analysis, the GPU-based Newmark-beta algorithm was presented. The fiber beam model was improved by considering the effects of shear and torsion. In addition, the constitutive models of steel and concrete were developed. The results of numerical examples illustrate that the developed platform HSNAS(GPU) could improve the efficiency of nonlinear static and dynamic analysis beside satisfying the accuracy.

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reinforced concrete structure / nonlinear finite element analysis / simulation platform / GPU / fiber model

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LI Hong-yu, TENG Jun, LI Zuo-hua. An efficient platform HSNAS(GPU) for nonlinear static and dynamic analysis of reinforced concrete frames—Ⅰ. Program development[J]. Journal of Vibration and Shock, 2016, 35(14): 47-53

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