[논문]An Automated Adaptive Finite Element Mesh Generation for Dynamics

Yoon, Chongyul

doi:10.5000/eesk.2019.23.1.083

An Automated Adaptive Finite Element Mesh Generation for Dynamics 원문보기

한국지진공학회논문집 = Journal of the Earthquake Engineering Society of Korea, v.23 no.1, 2019년, pp.83 - 88

Yoon, Chongyul (Department of Civil Engineering, Hongik University)

Abstract ▼ AI-Helper

Structural analysis remains as an essential part of any integrated civil engineering system in today's rapidly changing computing environment. Even with enormous advancements in capabilities of computers and mobile tools, enhancing computational efficiency of algorithms is necessary to meet the changing demands for quick real time response systems. The finite element method is still the most widely used method of computational structural analysis; a robust, reliable and automated finite element structural analysis module is essential in a modern integrated structural engineering system. To be a part of an automated finite element structural analysis, an efficient adaptive mesh generation scheme based on R-H refinement for the mesh and error estimates from representative strain values at Gauss points is described. A coefficient that depends on the shape of element is used to correct overly distorted elements. Two simple case studies show the validity and computational efficiency. The scheme is appropriate for nonlinear and dynamic problems in earthquake engineering which generally require a huge number of iterative computations.

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1) where the engineering solutions are assumed to have no error. The data on the table show that with the dynamic adaptive scheme, errors have been reduced significantly (3.59% to 0.38% for total displacement and 2.82% to 0.24% for stress) with a 259.1% increase in real run time whereas the fine mesh for the entire structure for the engineering solutions required enormous increase in real run time of 562.93%. Even as the computing speed of computers is continuously increasing in general, the enormous amount of computing needed in the more accurate and complex analysis of structures requires computing efficiency in every aspect of the algorithm in order for the method to be practical [22, 23].

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DOI : 10.5000/EESK.2019.23.1.083 [무료]
한국지진공학회 : 저널
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