Fluid-solid coupling method based on smoothed-particle hydrodynamics (SPH) and nonlinear finite elements
A technology of fluid dynamics and smooth particles, which is applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve improved effects, high precision, and convenient effect control
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[0029] figure 1 The overall processing flow of the fluid-solid coupling method based on SPH and nonlinear finite element is given, and the present invention is further described below in conjunction with other drawings and specific implementation methods.
[0030] The present invention provides a fluid-solid coupling method based on SPH and nonlinear finite elements, and the main steps are as follows:
[0031] 1. Collision detection method
[0032] In this method, the fluid is represented by particles, and the soft body is represented by finite element mesh. The main goal of collision detection is to detect whether particles collide with triangles. The main process includes establishing a space hash grid, throwing each collision detection unit (particle, triangle) into the hash grid, establishing a collision unit index, detecting whether the particle intersects with the triangle, and outputting the collision point. This method realizes the above process, and according to the...
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