Structural Optimization Design Of Dry Snow Blanket In Skiing

As a newly emerging form of skiing,dry snow sport is becoming more and more popular.There are many ski projects in the dry snow ski resort,and the construction of these ski projects requires dry snow blankets with different functions.However,there are few relevant studies.And many design defects need to be addressed.This paper takes the flammulina velutipes type dry snow blanket as the research object,and uses a combination of experimental and simulation analyses to study the pressure and energy absorption characteristics of the internal structure of the dry snow blanket.In addition,the surface friction characteristics of the dry snow blanket are also studied.The main research contents are:(1)The pressure bearing and cushioning properties of the internal unit structure of the flammulina velutipes type dry snow blanket were studied.Firstly,the internal pressure bearing structure of the flammulina velutipes structured dry snow blanket is divided into units,and the mechanical properties of these unit specimens are analyzed through static compression tests.The main purpose of the tests is to explore the pressure bearing and cushioning properties of the flammulina velutipes structured dry snow blanket.The effects of different unit combinations and arrangements on the pressure bearing and cushioning properties of flammulina velutipes structured snow blankets,the effects of different compression speeds on the pressure bearing and cushioning properties of flammulina velutipes structured snow blankets,and the effects of repeated compression on the pressure bearing and cushioning properties were analyzed.(2)The influences of the friction between poplar board and dry snow blanket were studied.The local friction test between poplar board and dry snow blanket was conducted to study the changes in weight and frictional resistance of skiers,the effects of different sliding directions and lubrication conditions on the friction coefficient between poplar board and dry snow blanket.At the same time,it is analyzed the effectiveness of lubricating media for reducing the friction resistance of dry snow blankets to find a suitable lubricating medium.(3)The cushioning and friction characteristics of the interior structure of dry snow blankets under different sizes were studied.A confirmatory numerical simulation of the internal structure of the flammulina velutipes type dry snow blanket was conducted by using the statics module of the finite element software.The comparison between the numerical simulation results and the experimental results showed that the deformation and data results of the finite element model were consistent with the experimental results.Based on confirmatory numerical simulation,the same analysis steps were used to study the influence of changing structural dimensions on the pressure and cushioning performances of the flammulina velutipes structured dry snow blanket.Used the dynamics module to study the surface friction of dry snow blankets.By changing the cross-sectional shape of the structure and the arrangement of the internal rod structure,it was explored the reasons for the anisotropy of the surface friction of dry snow blankets,and designed a dry snow blanket structure with better cushioning and sliding effects.The experimental research content and simulation optimization results of this paper can provide a reference for the optimization of other similar structures.It has important engineering application value.