The present invention provides a method and application for simulating a
large deformation process of an
impact based on a meshless interpolation technique, which belongs to the field of
computational mechanics and numerical
simulation technology, including
model parameter setting,
discretization of the
problem domain and the
time domain, iterative updating of the variables to be determined in the
problem domain using the regularized Newton method, solving the local deformation gradient at the next moment, solving the node acceleration, updating the node coordinates, updating the material point coordinates and
physical information, completing the
simulation of the
impact process, and the like. The present invention uses the regularized Newton method for the objective function of the local maximum entropy, and by constructing a simple shape near the calculation point, provides a method for quickly, accurately, and efficiently determining the
initial point, thereby ensuring the solution efficiency, and using the Nelder‑Mead
algorithm to solve the extreme case iteration point, thereby ensuring the stability of the solution, and is used for the complete
simulation of the
large deformation process of materials under ultra-high-speed
impact, and has the characteristics of high calculation accuracy and strong stability.