基于RADIOSS的车身正面碰撞仿真分析
信息技术与网络安全
宁士翔,胡静波,庆光蔚,王小燕,王 爽
(南京市特种设备安全监督检验研究院 大数据中心,江苏 南京210019)
摘要: 根据GB11551-2014《汽车正面碰撞的乘员保护》法规的要求,以某型客车车身为研究对象,将建好的几何模型导入HyperMesh软件中,通过拓扑修复、抽取中面以及简化模型等操作,完成对车身数模的几何清理,建立了车身正面碰撞有限元模型。在RADIOSS环境下,设置材料属性,选取弹簧单元焊点模型以及TYPE7接触类型,对其正面碰撞过程进行数值模拟,同时对碰撞过程中的车身变形、能量转换规律以及速度和加速度进行分析。将仿真结果与实车碰撞试验结果进行对比,验证了车身模型的正确性。结果说明基于RADIOSS的计算机仿真方法不仅能指导客车车身的碰撞试验,并且可以大量缩减实车试验成本,具有较大的工程借鉴意义。此方法为车身结构的进一步优化提供了研究基础。
中圖分類號: U463.82+2
文獻(xiàn)標(biāo)識碼: A
DOI: 10.19358/j.issn.2096-5133.2021.02.011
引用格式: 寧士翔,胡靜波,慶光蔚,等. 基于RADIOSS的車身正面碰撞仿真分析[J].信息技術(shù)與網(wǎng)絡(luò)安全,2021,40(2):66-69.
文獻(xiàn)標(biāo)識碼: A
DOI: 10.19358/j.issn.2096-5133.2021.02.011
引用格式: 寧士翔,胡靜波,慶光蔚,等. 基于RADIOSS的車身正面碰撞仿真分析[J].信息技術(shù)與網(wǎng)絡(luò)安全,2021,40(2):66-69.
Simulation analysis of car body frontal crash based on RADIOSS
Ning Shixiang,Hu Jingbo,Qing Guangwei,Wang Xiaoyan,Wang Shuang
(Big Data Center,Nanjing Special Equipment Safety Supervision Inspection and Research Institute,Nanjing 210019,China)
Abstract: Based on the car collision regulation of GB 11551-2014 “The protection of the occupants in the event of a frontal collision for motor vehicle”, aiming at coach body, the geometry model was imported into the HyperMesh software, geometric cleaning of the digital model of the car body was completed through topology repair, midface extraction and simplified model operations, and the finite element model of frontal crash was established. It set the material properties, and selected the spring unit solder joint model and TYPE7 contact type in the software RADIOSS. The frontal crash process of coach body was numerically simulated by the software RADIOSS. And coach body deformed, energy transfer rule, velocity and acceleration were analyzed. Through the comparison between simulation and test, the validity of coach body model was verified. The results show that the computer simulation method based on RADIOSS can not only guide the collision test of bus body, but also greatly reduce the cost of actual vehicle test, which has great engineering reference significance. This method provides the research foundation for the improvement of coach body structure.
Key words : coach body;frontal crash; RADIOSS;simulation
0 引言
據(jù)相關(guān)資料統(tǒng)計(jì),2009~2018年,我國汽車保有量和交通運(yùn)輸基礎(chǔ)設(shè)施建設(shè)處于快速發(fā)展的重要時(shí)期。然而道路交通事故的發(fā)生量在我國近十年內(nèi),整體呈現(xiàn)先降后升趨勢。2015年我國道路交通事故發(fā)生量處歷史低點(diǎn),而后再次出現(xiàn)反彈,2018年事故發(fā)生數(shù)甚至超過十年前的統(tǒng)計(jì)水平,死亡人數(shù)居高不下,直接財(cái)產(chǎn)損失進(jìn)一步增高[1]。目前,國內(nèi)外關(guān)于汽車被動安全性研究,主要是通過實(shí)車試驗(yàn)和計(jì)算機(jī)模擬仿真兩種方法來進(jìn)行的。由于實(shí)車試驗(yàn)需要大量的成本投入,以及“實(shí)車試驗(yàn)-改進(jìn)結(jié)構(gòu)-再次實(shí)車試驗(yàn)”需要較長的周期,因此計(jì)算機(jī)仿真模擬被廣泛地運(yùn)用于汽車被動安全性領(lǐng)域[2]。
本文詳細(xì)內(nèi)容請下載:http://m.ihrv.cn/resource/share/2000003381
作者信息:
寧士翔,胡靜波,慶光蔚,王小燕,王 爽
(南京市特種設(shè)備安全監(jiān)督檢驗(yàn)研究院 大數(shù)據(jù)中心,江蘇 南京210019)
此內(nèi)容為AET網(wǎng)站原創(chuàng),未經(jīng)授權(quán)禁止轉(zhuǎn)載。
