Simulation Model for Studying the Effect of Function Distribution on the Evaluation of Building Damage Caused by Missile Attack

When a building is hit by a missile, the most important parts are usually destroyed first to achieve maximum damage to the functions of the building. To accurately quantify the damage to a building, a function distribution density is constructed to describe the importance of different parts, and is applied to the probability damage calculation of a building under a missile strike. Based on the objective characteristics, the building is divided into several modules. The importance of the different modules is calculated using the damage tree. The distribution densities of the physical and system functions are constructed separately and combined into the function distribution density of the building. Meanwhile, the landing points of the missile are simulated using the Monte Carlo method, and depending on whether the function distribution density is considered, a probability damage calculation is performed. In comparison, the calculation results considering the function distribution density have a larger irregular shape, which can describe the damage to the building more accurately. This study can provide support for improving the physical protection of buildings and ensuring the operational reliability of their functions.