Study On Impact Resistance Of Fiber Reinforced Ice Matrix Composites

The polar regions are rich in natural resources and have a significant strategic value,so many countries around the world are paying attention to the polar regions and researchers are focusing on these areas.However,the development of polar regions is extremely challenging due to the severe climate and inaccessible geographical location.In recent years,the development of polar regions has become a popular area of competition among countries due to global warming and advances in science and technology.Considering the special geographical environment of polar regions,the construction of permanent airports and runways is a necessary condition for polar air transportation,and the current runway construction methods have certain theoretical research difficulties and practical application difficulties.In this paper,with the background of polar airport runway construction,research on the impact resistance of fiber-reinforced ice matrix composites is carried out to investigate the feasibility of applying fiber-reinforced ice matrix composites to polar airport runway construction,details of the research are as follows:The low-velocity impact test of fiber-reinforced ice matrix composites is carried out and gives a damage determination criterion for ice matrix composites,which is used to investigate the effects of fiber type,fiber volume fraction,and fiber length-to-diameter ratio on the impact resistance of ice matrix composites.In this way,the relationships between impact contact force,impact energy,impact velocity,and impact time are analyzed;and the crack characteristics and damage behavior of ice matrix composites following the failure are elucidated.Based on the theoretical model for predicting the equivalent elastic properties of fiberreinforced composites,the influence of fiber content on the elastic properties of ice matrix composites is investigated using the Mori-Tanaka method;and with the secondary development of ABAQUS finite element software,a three-dimensional microscopic numerical model of fiber-reinforced ice matrix composites is established and the influence of fiber content on the elastic properties of ice matrix composites is analyzed.The elastic parameters required for macroscopic simulations are determined through numerical simulations.Finally,the theoretical values are compared and analyzed with the simulated values to verify the feasibility of the finite element method to predict the elastic properties of the composites.Based on the dynamical explicit finite element method,a low-velocity impact numerical model is established to analyze the effect of fiber volume fraction on the impact resistance of ice matrix composites,then further analyzes the damage emergence and damage evolution process of the composites,by comparing the low-velocity impact test results,the feasibility of the model is verified,the compression strength of ice matrix composites before and after impact is investigated,and the residual compression strength of ice matrix composites is analyzed to evaluate the damage tolerance of the composites.