Stress state-considered bone structure prediction method

Abstract

The invention discloses a stress state-considered bone structure prediction method. The method comprises the following steps of: determining a topological range of a to-be-predicted bone structure andabstracting a mechanical boundary condition and a load according to a mechanical principle; 2, modeling the bone structure determined in the step 1; 3, carrying out finite element mesh generation onthe established bone structure model so as to obtain a bone structure finite element mesh model; 4, defining initial performance density of the bone structure, calculating a material performance parameter elastic modulus of the bone and defining a material attribute for each unit; 5, loading the mechanical boundary condition and the load for the bone structure finite element mesh model; and 6, carrying out finite element analysis and solution on the bone structure. According to the bone structure prediction method, a bone functional adaptability principle of taking the bone as a living organ is embodied, and self-adaptive optimal design of taking the bone as an engineering material is embodied.

Description

technical field [0001] The invention relates to a bone structure prediction method, in particular to a bone structure prediction method considering the stress state. Background technique [0002] Bone structure prediction (also known as numerical simulation of bone remodeling) is an important method for studying bone remodeling theory. It provides a theoretical basis for clinically predicting changes in bone density or optimal design of prostheses, and is also helpful for the research of various bone metabolic diseases and new Proposal of treatment options for bone metabolic diseases. The bone structure prediction equation is a numerical implementation algorithm of the bone function adaptability principle of "grow when you need it, and resorb when you don't need it". From an engineering point of view, it is an adaptive optimization design that regards bone as an engineering material. Therefore, the principle of bone function adaptability is also called the bone structure s...

AI Technical Summary

Problems solved by technology

[0004] The problems and shortcomings of the current bone structure prediction methods are that no matter whether the mechanical excitation adopts strain energy density, Mises equivalent stress, or Mises equivalent strain, etc., the change of stress state in the process of bone structure prediction is not considered. Calculation of mechanical stimuli using fixed formulas during the calculation process

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