本文選題：道路工程 + 力學(xué)模型��； 參考：《科技通報(bào)》2017年11期

【摘要】：車(chē)輛與護(hù)欄碰撞是一個(gè)復(fù)雜的運(yùn)動(dòng)過(guò)程,受到車(chē)型、護(hù)欄類(lèi)型、碰撞速度等因素影響。建立科學(xué)的碰撞數(shù)學(xué)模型是公路護(hù)欄設(shè)計(jì)、安裝和改進(jìn)的重要依據(jù),對(duì)提高公路護(hù)欄在預(yù)防和減少道路交通事故方面有重要作用。通過(guò)車(chē)輛與護(hù)欄之間彈力與形變線性關(guān)系、及彈力與時(shí)間正弦關(guān)系、結(jié)合碰撞后車(chē)輛的平面運(yùn)動(dòng)特性,將車(chē)輛與護(hù)欄碰撞分為回彈型碰撞和無(wú)回彈型兩類(lèi)碰撞,在此基礎(chǔ)建立了無(wú)回彈型汽車(chē)與公路護(hù)欄碰撞力的數(shù)學(xué)模型,用該模型預(yù)測(cè)汽車(chē)碰撞護(hù)欄碰撞力的數(shù)值,與現(xiàn)有國(guó)內(nèi)外實(shí)車(chē)碰撞試驗(yàn)值對(duì)比,精度可以達(dá)到±5%。
[Abstract]:The collision between vehicle and guardrail is a complicated process, which is influenced by vehicle type, guardrail type, impact speed and so on. Establishing a scientific mathematical model of collision is an important basis for the design, installation and improvement of highway guardrail, and plays an important role in preventing and reducing road traffic accidents. According to the linear relationship between elastic force and deformation between vehicle and guardrail, and the relationship between elastic force and time sine, combined with the plane motion characteristics of vehicle after collision, the collision between vehicle and guardrail is divided into two types: springback collision and non-springback collision. On this basis, the mathematical model of the collision force between the springless vehicle and the highway guardrail is established, and the numerical value of the collision force of the vehicle collision barrier is predicted by the model. Compared with the actual vehicle collision test value at home and abroad, the accuracy can reach 鹵5%.
【作者單位】： 浙江警察學(xué)院;浙江省公安廳高速交警總隊(duì);浙江省公安廳交管局;
【基金】：浙江省重點(diǎn)科技創(chuàng)新團(tuán)隊(duì)項(xiàng)目(2013TD09) 公安部科技強(qiáng)警基礎(chǔ)專(zhuān)項(xiàng)(2015GABJC41)
【分類(lèi)號(hào)】：U417.12
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本文編號(hào)：1908842