Multiscale Study For Deformations Of Inorganic Silicate Glass Structures Of Protection Screen

With the development of smartphones,capacitive touch screens have emerged,completely subverting the human-computer interaction of keyboard operations.The protective screen material of mobile phone electronic products has gradually evolved from the original glass materials to various composite silicate materials with higher hardness and toughness.With the advancement of chemical processes,chemically enhanced alkali metal silicate materials have been the main materials for glass protective screen glass.In addition,in recent years,with the advancement of two-dimensional(2-D)material growth processes,2-D material-modified silicate glass materials,such as “graphene glass”,have received great attention for their application in various fields and protection in smartphones.The screen is gradually being applied and researched.However,long-term destructive testing wastes a lot of resources,and with the improvement of the manufacturing process and precision of the protective screen glass material,pre-testing through simulation is indispensable work.Although many related simulations have been carried out for mobile phone screen drop tests so far,a relatively simple model structure is generally used,but the specific silicate material types,specific material inhomogeneity,and material surface pressures are not considered.So,there is a certain gap between the simulation results and the experimental results,which cannot well explain the relevant phenomena of the experimental results and cannot better guide the design of the new chemically enhanced alkali metal silicate glass materials.Therefore,this paper has carried out related research on these issues:1.Multi-scale simulation(finite element theory,molecular dynamics,first-principles calculations)to study the mechanical properties of silicate materials and the mechanism and damage strength of protective screen collision stress.Then we explore the chemical enhancement of different types and components.The difference of silicate materials provides a certain guiding ideology for the selection and design of new mobile phone protection screen silicate materials.2.Study the mechanical properties and optical properties of 2-D materials,explore its roles in 2-D material-modified silicate materials,and analyze its modification influences on the impact stress analysis of protective screens.An example of the exploration and design of reinforced alkali metal silicate materials are provided.3.Propose the concentration-depth of ion exchange according to the simulation method of gradient consideration,study the influence of ion concentration-depth in finite element simulation,analyze the change of non-uniformity and stress on the mechanical behavior of mobile phone protection screen.The results obtained by the finite element simulation of mobile phone protection screens provide a guiding idea for the high-precision design of ionexchanged alkali metal silicate materials in finite element simulation and related experimental applications.