太阳光照下夹层风挡玻璃吸能特性仿真研究

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中图分类号： U465.4+6 文献标识码：A DOI：10.3969/j.issn.1674-8484.2025.04.006

Abstract：To study the effect of solar radiation on the energy absorption properties of laminated windshields， a photothermal-mechanical coupling simulation model was proposed，which took into accounttheeffectof sunlighton the temperatureof polyvinylbutyral （PVB）interlayerand themechanicalpropertyof the laminated glass.This study conducted a photothermal modeling of the temperature rise of glass under sunlight，and converted the temperature results into PVB interlayer modulus using dynamic mechanical analysis （DMA） tests.The modulus was usedas the input for the headform-windshield impactfinite element model tocalculate theenergyabsorption propertyand pedestrian protection propertyof the windshield.The results show that in summer，when the transmitted solar power of the windshield is 700W/m2 ，thesteady-state temperature of the interlayer increases to 70∘C ，themodulus of the interlayer decreases to about 1/500 of that at room temperature， and the critical speed of the headformpenetrating thewindshield decreases to 20km/h from 40km/h tested experimentallyat room temperature.Solar radiationreduces themodulusof the interlayer by increasing the temperatureof the interlayer，thusreducing theenergyabsorptionperformanceof thelaminated windshields， andincreasing the riskof the headpenetrating the windshieldand havingasecondarycolision withobjects inside the cabin.

Key words：laminated windshield; energyabsorption; headform impact;solarradiation;finite elementanalysis

风挡玻璃起到将汽车驾驶室与外界隔离的作用，对风挡玻璃的力学性能进行研究和改进，不仅是满足《GB9656-2021》[、《FMVSS205》[2]等法规要求的必要条件，也是降低车内驾驶员和车外弱势道路使用者（行人、骑自行车者及骑摩托车者等）头部受伤风险的关键因素[3]。（剩余14963字）