Abstract
This paper analyzes the factors that influence the stability of the sand castle, and sandcastle stability of different shapes are care, by modeling concluded. Beach sand castle by both tidal and wave interaction. Through some will be converted to calculate the impact of the two together, we simulate water flow after the start ashore process to Shah’s fort, through to find reasonable assumptions speed of the water and the water depth and leave as a function of the distance between the coast, while the unified regulations the volume of the sand castle is 8 m 3, and the distance from the bottom of the sand castle to the coast is 2 m to 4 m to facilitate the comparison of the influence of water flow. Firstly, we have determined that cones are the best basic 3D geometric foundation of sandcastle. This model is a simple static model, because we want to avoid the situation that force exerted by seawater can directly destroy our foundation of sandcastle. Secondly, we made starting coulombic stars increases the shear strength is necessary to increase the internal friction angle, and then we made derived experimental data of the relationship between the angle of internal friction and the ratio of water and sediment. In the role of rainwater from this San Ge analyzed angle that is, the rain will affect the flow of water into the sand castle of speed and depth, while the rain continued the process, make sandcastles water content increases large, shadow rang its strength, finally, rain the shock effect, the presence of momentum, will destroy the strength of the sand castle.
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