Engineering structure crack problem solving method and device

Abstract

The invention provides an engineering structure crack problem solving method and device. The solving method comprises the following steps: establishing a numerical model of an engineering structure based on material parameters, unit types, unit division quantity and boundary condition information of the actual engineering structure to be solved, and adding the material parameters and the boundarycondition information to nodes on each unit of the numerical model; establishing a displacement and stress equation; dispersing and integrating the displacement equation and the surface force equation; solving the equation, and solving the stress and displacement data of the boundary and internal points of the model through a Gaussian numerical solution method to serve as the stress and displacement data of the engineering structure to be solved. According to the method, the surface force on the boundary and the upper and lower surfaces of the crack of the engineering structure can be conveniently solved. According to the method, parameters such as stress, relative displacement and stress and displacement of internal points are obtained, the solving result has high accuracy and effectiveness, the method can be used for analyzing and predicting the crack condition of the structure in actual engineering, and the safety and reliability of the engineering structure are ensured.

Description

technical field [0001] The invention belongs to the technical field of solid mechanics, and in particular relates to a method and a device for solving crack problems of engineering structures. Background technique [0002] As we all know, cracks are quite common in engineering structures. Due to the poor quality of engineering materials or the engineering structure being subjected to loads exceeding the design standards, cracks will appear in the engineering structure. If they are not discovered and rectified in time, the engineering structure will fail. , and even cause the collapse of engineering buildings, causing huge damage to personal safety and social wealth. Taking the steel structure building vigorously promoted in modern architecture as an example, metal materials such as steel are widely used in construction projects, so it is extremely important to calculate and analyze the stress and displacement changes of cracked steel structure materials. In today's numerica...

AI Technical Summary

Problems solved by technology

However, since the rigid displacement is not subtracted from the displacement field, it is usually assumed to be zero. When there are few known displacement conditions in the boundary conditions, the rigid displacement is difficult to be limited. At this time, IBEM often cannot give an accurate As a result, there may even be calculation results that are far from accurate results

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