![]() A new interpolation error index, closely related to the accuracy of RPIM, is proposed. First, the effect of shape parameters (R, q) of the multi-quadric basis function on the accuracy of RPIM is examined via global search. In this work, three main factors, i.e., the shape parameters, the influence domain size, and the nodal distribution, on the accuracy of the radial point interpolation method (RPIM) are systematically studied and conclusive results are obtained. Recently, the radial point interpolation meshfree method has gained popularity owing to its advantages in large deformation and discontinuity problems, however, the accuracy of this method depends on many factors and their influences are not fully investigated yet. Peng, Chong Yuan, Hui-na Zhang, Bing-yin Zhang, Yan Factors affecting accuracy of radial point interpolation meshfree method for 3-D solid mechanics Factors affecting accuracy of radial point interpolation meshfree method for 3-D solid mechanics
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