Numerical Simulation Study on the Impact of Hail on Greenhouse Roof Glass
In order to reveal the load-bearing mechanism of hail impact on the glass greenhouse roof,this pa-per uses LS-PrePost's follow-up strengthening material MAT-3 for modeling,and considers the factors of hail falling speed,particle size and roof slope angle are taken into consideration.A study on the roof load of hail impacting glass greenhouses at low speed under natural conditions is conducted.The results show that hail particle size has a significant impact on roof impact energy.The impact energy increases non-linearly with the increase of hail particle size.As the roof slope angle increases,the impact energy decreases.When the slope angle is between 20° and 25°,the effective stress reaches maximum value.The research results provide certain value and reference for the roof slope angle design and disaster prevention of numerous greenhouses.
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