广西大学学报(自然科学版)
廣西大學學報(自然科學版)
엄서대학학보(자연과학판)
JOURNAL OF GUANGXI UNIVERSITY (NATURAL SCIENCE EDITION)
2014年
5期
955-961
,共7页
仿真%电动自行车%轿车%抛距%拟合
倣真%電動自行車%轎車%拋距%擬閤
방진%전동자행차%교차%포거%의합
simulation%electric bicycle%vehicle%throw distance%fitting
为研究轿车碰撞初速度与电动自行车、骑车人抛距的关系,运用 MADYMO软件,建立轿车、电动自行车-骑车人的多刚体碰撞模型。通过仿真结果与监控录像截图及数据的对比,其误差小于1%,验证了模型的准确性。并通过改变模型中轿车的碰撞初速度21次,对得到的数据结果进行数学拟合,得出轿车制动距离、电动自行车滑行距离、骑车人头部与地面第一次接触距离、骑车人最终落点距离等参数与轿车碰撞初速度之间的关系公式6个。这些公式为交通事故中轿车车速的鉴定,提供了一定的参考依据。
為研究轎車踫撞初速度與電動自行車、騎車人拋距的關繫,運用 MADYMO軟件,建立轎車、電動自行車-騎車人的多剛體踫撞模型。通過倣真結果與鑑控錄像截圖及數據的對比,其誤差小于1%,驗證瞭模型的準確性。併通過改變模型中轎車的踫撞初速度21次,對得到的數據結果進行數學擬閤,得齣轎車製動距離、電動自行車滑行距離、騎車人頭部與地麵第一次接觸距離、騎車人最終落點距離等參數與轎車踫撞初速度之間的關繫公式6箇。這些公式為交通事故中轎車車速的鑒定,提供瞭一定的參攷依據。
위연구교차팽당초속도여전동자행차、기차인포거적관계,운용 MADYMO연건,건립교차、전동자행차-기차인적다강체팽당모형。통과방진결과여감공록상절도급수거적대비,기오차소우1%,험증료모형적준학성。병통과개변모형중교차적팽당초속도21차,대득도적수거결과진행수학의합,득출교차제동거리、전동자행차활행거리、기차인두부여지면제일차접촉거리、기차인최종낙점거리등삼수여교차팽당초속도지간적관계공식6개。저사공식위교통사고중교차차속적감정,제공료일정적삼고의거。
In order to obtain the relationship between velocity of vehicle and throw distances of E-bi-cycle and bicyclist, MADYMO ( a dynamic modelling software) was used to model vehicle and bicy-cle-bicyclist and to simulate a real vehicle-bicyclist crash.By comparing the results of simulation and monitoring photos and data, this simulation was validated with a deviation less 1%.In the sim-ulation, 21 variations of initial velocities of vehicle were used to fit into 6 formulae which describe the relationship between braking distance, sliding distance, first contact distance between head and ground, distance of ending and velocity of vehicle.These formulae provide a scientific basis in esti-mating speed of vehicle in a traffic collision.