Numerical Simulations Of Structural Damage

Modern project structures are proceeding at the direction of maximization, complication, automation and intelligent. The complicated environments of service threat functional safety of the structure. To guarantee the safety and avoid disaster,the scholars, engineers and technicians are paying attention to the research of identification for the damage of structure real-timely, on -line and effectively.Generalized System of the structure, including mechanical systems and structural systems two categories. International vibration theory was based on the damage identification method has been at least 30 years of history. Dynamic detection technology in mechanical systems (in particular the destruction of rotating machinery diagnostics) the destruction of the application has begun to mature. Civil engineering structures system as a structural system, the corresponding system will damage the structure of a large-scale study to identify the work of the study of history no more than 20 years, and the civil structure of the mechanical system is exceptionally complex, so far, the international community has not yet formed a line the effective destruction of the civil structure identification method. As civil structural system in which the operating environment and the majority of machinery and equipment operating environment in which many poor, and the structure of the large size of the system, carried out the experimental studies is difficult and costly. Real civil engineering structures in place after the partial destruction, the mechanical properties of structural systems and also the lack of corresponding changes in-depth theoretical study, the test data is scanty.In this paper, the use of advanced finite element numerical simulation systems, launched a civil structure of the real components, civil structural system of numerical simulation study damage to the simulation results obtained from some of the civil engineering structures in place after the destruction of the structure and mechanical properties of the initial changes The results, which to some extent, can replace expensive real structural damage experimental research, the ultimate goal is to achieve effective identification system will damage the structure of the accumulated valuable method of numerical simulation results.This paper presents the simulation of the destruction of structures damaged finite element model, simulation strategy and simulation, against a real structural systems, the establishment of a large-scale three-dimensional structure of the entity model, which has a good attributes of the parameters. On the realization of large-scale civil engineering structures 3D model of the system in general, stated in the process of modeling the problems and solutions. On this basis, the basis of the structural damage and destroying the structure of an example, the proposed structure has certain typical damage model. Use of the structural damage model, achieving a large number of numerical simulation of structural damage. Use of the structural damage model the geometry of the structural damage, the extent of damage and undermine the important position of destroying the structure parameters, have been destroying the structure, mechanical properties and structural systems changes in the numerical simulation results, preliminary analysis of the structure of the mechanical system structure damage changes in the properties and characteristics, for the realization of effective structural damage identification accumulated useful experience.