基于RADIOSS的車身正面碰撞仿真分析
信息技術(shù)與網(wǎng)絡(luò)安全
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)
摘要: 根據(jù)GB11551-2014《汽車正面碰撞的乘員保護(hù)》法規(guī)的要求,以某型客車車身為研究對(duì)象,將建好的幾何模型導(dǎo)入HyperMesh軟件中,通過拓?fù)湫迯?fù)、抽取中面以及簡化模型等操作,完成對(duì)車身數(shù)模的幾何清理,建立了車身正面碰撞有限元模型。在RADIOSS環(huán)境下,設(shè)置材料屬性,選取彈簧單元焊點(diǎn)模型以及TYPE7接觸類型,對(duì)其正面碰撞過程進(jìn)行數(shù)值模擬,同時(shí)對(duì)碰撞過程中的車身變形、能量轉(zhuǎn)換規(guī)律以及速度和加速度進(jìn)行分析。將仿真結(jié)果與實(shí)車碰撞試驗(yàn)結(jié)果進(jìn)行對(duì)比,驗(yàn)證了車身模型的正確性。結(jié)果說明基于RADIOSS的計(jì)算機(jī)仿真方法不僅能指導(dǎo)客車車身的碰撞試驗(yàn),并且可以大量縮減實(shí)車試驗(yàn)成本,具有較大的工程借鑒意義。此方法為車身結(jié)構(gòu)的進(jìn)一步優(yōu)化提供了研究基礎(chǔ)。
中圖分類號(hào): U463.82+2
文獻(xiàn)標(biāo)識(shí)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(shí)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(shì)。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(dòng)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(dòng)安全性領(lǐng)域[2]。
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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)
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