Review on Progress Research on Numerical Simulation of Fall from Height
The key and difficult points of forensic analysis of high-falling cases are to infer and reconstruct human falling trajectory and analyze the formation mechanism of injury.These results help to provide technical support for the comprehensive judgment of the nature of human fall,and help to provide intuitive and effective explanations for non-professionals such as family members of the deceased.Numerical simulation technology is a series of new interdisciplinary technology formed on the basis of the continuous development of computer simulation.In recent years,thanks to the development of numerical calculation methods and the improvement of computer performance,the technology has made some progress in the research field of damage biomechanics.Numerical simulation technology has advantages of objectification,visualization,parameterization and repeatability of simulation results.This technique opens up a new way to analyze and study the fall process and fall damage in high-falling cases.Based on this kind of technology,the simulation analysis of human falling trajectory and falling damage is conducive to more scientific,objective and understandable analysis conclusions,so as to provide important technical support forjudging the nature of high-falling cases,answering questions of family members and resolving social conflicts.There are two kinds of numerical simulation techniques suitable for high falls.One is to analyze and reconstruct the falling process based on the multi-rigid body dynamics method.Another is to analyze the formation mechanism of falling damage based on the finite element method.This paper reviewed the application of numerical simulation technology in high falling cases at home and abroad in recent years,and showed the application potential of this technology in the forensic analysis of high fall cases.
forensic biomechanicsnumerical simulationrigid body dynamicsfinite elementfall from height
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