By Shinobu Yoshimura, Muneo Hori, Makoto Ohsaki
Huge earthquakes and tsunamis have brought on critical harm to special buildings reminiscent of civil infrastructure components, constructions and gear vegetation all over the world. To quantitatively review such harm approaches and to layout powerful prevention and mitigation measures, the newest high-performance computational mechanics applied sciences, which come with telascale to petascale desktops, can provide strong instruments. The phenomena coated during this e-book contain seismic wave propagation within the crust and soil, seismic reaction of infrastructure components resembling tunnels contemplating soil-structure interactions, seismic reaction of high-rise structures, seismic reaction of nuclear strength crops, tsunami run-up over coastal cities and tsunami inundation contemplating fluid-structure interactions. The ebook presents all invaluable details for addressing those phenomena, starting from the basics of high-performance computing for finite point tools, key algorithms of exact dynamic structural research, fluid flows with unfastened surfaces, and fluid-structure interactions, to functional purposes with specified simulation effects. The booklet will provide crucial insights for researchers and engineers operating within the box of computational seismic/tsunami engineering.
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Additional resources for High-Performance Computing for Structural Mechanics and Earthquake/Tsunami Engineering
It has not yet been proved in general that the above E vanishes at the limit as the number of ˛ increases infinitely. However, it has been rigorously demonstrated that the numerical solution coincides with a solution of an ordinary FEM with linear elements. In the numerical experiments presented here, it is shown that the numerical solution is quantitatively close to the exact solution and the discontinuity inherent to the numerical solution does not provide fatal error. 2 Numerical Experiment We perform simulation of earthquake ground motion which is excited by a single point source in horizontally layered media and in an actual 3D underground structure, in order to test the numerical performance of the proposed elements.
TET4 has a linear basis function of displacement, while HEX8 uses tri-linear functions. Simulation of Seismic Wave Propagation and Amplification 27 Fig. 1 Configuration of elements. Dotted lines indicate interfaces between Voronoi blocks. pl 1 D 1; N i is defined in Table 1. A Voronoi block is where H is the Heaviside function and pl defined as the region of space closer to its node than to any other node. Thus, f ˛ g is orthogonal, but discontinuous. For TET4D, Ke is identical to that of TET4.
The output of the 100-step simulation is gathered per rank and outputted in binary to reduce the number of files and increase throughput. 7 % of the whole program. 7 % of the whole elapsed time. 6 %) and that the performance of the solver dominates the performance of the whole analysis. Although the performance of GAMERA was high for the 100 steps solved here, we can expect increased effectivity of GAMERA when solving poorer convergency problems, considering more complex grounds or input waves with phase differences.