Due to the disadvantage of mesh distortion and large computer time consuming in the commonly used numerical methods, material point method (MPM for short) is proposed to deal with the wind-membrane structure interaction. The solid is described by MPM, whereas the fluid is described using immersed boundary method. The effect of the solid on fluid is taken into account through imposing boundary conditions on the immediate vicinity mesh nodes. The effect of the fluid on solid is taken into account by imposing pressure and shear stress on the solid surface. And the procedures for solving the solid equations, fluid equations and the fluid-structure interaction are presented, respectively. The algorithm is applied to a 2D membrane structure interacting with wind. The results such as structural responses and fluid pressure field are obtained, which are in good agreement with those obtained using finite element method. (FEM) And computing efficiency is compared between MPM and FEM, where MPM shows better efficiency. It is shown that ideal results can be obtained in wind-structure interaction by employing MPM, with great improvement in computing efficiency.
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