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Simulation and Improvement of Safety Performances of a Certain School Bus

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2012年06期
Page:
0-
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Info

Title:
Simulation and Improvement of Safety Performances of a Certain School Bus
Author(s):
WANG Liang mo 1CHEN Dong yi 1YUAN Liukai2ZHANG Zun zhi 2ZHANG Tang yun 2
1.School of Mechanical Engineering,NUST,Nanjing 210094,China; 2.Nanjing Iveco Automobile Co.,Ltd.,Nanjing 210028,China
Keywords:
school busessafety performancesfinite element analysisrollover protectionroof crush resistance
PACS:
U461.91
DOI:
-
Abstract:
To improve the roof safety of a certain school bus,the occupant protection performances of a certain school bus roof structure in rollover accidents are studied here.A durability finite element model of the bus is built by using Hypermesh and Hypercrash.As automotive collision contains the characteristics of geometric nonlinearity,material nonlinearity and boundary nonlinearity,the appropriate nonlinear materials and shell elements are selected and defined,and the spots and other connections are simulated.The rollover protection and roof crush resistance simulation are carried out by RADIOSS.The results show that the body structure is able to withstand 1.5 times of the gross vehicle weight of the standard in rollover protection simulation,and the intrusion distance is 46 mm in roof crush resistance simulation.Both simulation results meet the requirements of standards.Referring to related international advanced standards,the design of Apillar and crossbeam is improved,〖HJ1.7mm〗the maximum bearing capacity of one single beam reaches 64 700 N,and the rollover protection performances of the school bus are improved.

References:

[1]GB 24407—2012,专用校车安全技术条件[S]. 
[2]GB 26134—2010,乘用车顶部抗压强度[S]. 
[3]唐波,赵晓红.某车型针对《乘用车顶部抗压强度》的开发[J].汽车与配件,2011,40(10):32-35. Tang Bo,Zhao Xiaohong.The development of a vehicle according to Roof crush resistance of passenger cars[J].Automobile & Parts,2011,40(10):32-35. 
[4]Gatilao F,Roesser G,Reaume B.An overview of FMVSS 216a roof crush resistance testing[A].SAE 2010 World Congress & Exhibition[C].Detroit,Michigan,USA:SAE Technical Paper,2010-01-1020:1-9. 
[5]Narayana N.Accurate FEA predictions for roof crush performance of automotive structures[A].SAE 2011 World Congress & Exhibition[C].Detroit,Michigan,USA:SAE TechnicalPaper,2011-01-1063:1-10. 
[6]Pathare R,Mansour M.Automotive roof crush,structural foam enhancement solution[A].SAE 2009 World Congress & Exhibition[C].Detroit,Michigan,USA:SAE Technical Paper,2009-01-0371:1-12.
[7]孙信,王青春,桂良进,等.大客车翻滚安全性有限元分析[J].汽车技术,2007(8):34-37。 Sun Xin,Wang Qingchun,Gui Liangjin,et al.Finite element analysis on rollover crashworthiness of a bus[J].Automobile Technology,2007(8):34-37.
[8]雷正保,付爱军,杜青云,等,轻型客车车身的翻滚安全性设计方法[J].交通科学与工程,2009,25(1):63-71. Lei Zhengbao,Fu Aijun,Du Qingyun,et al.Method for the rollover safety design of light bus body[J].Journal of Transport Science and Engineering,2009,25(1):63-71.
[9]邰永刚,孙凌,周喆.大客车翻滚碰撞性能研究与改进设计[J].机械科学与技术,2005,24(12):1420-1422. Tai Yonggang,Sun Lingyu,Zhou Zhe.Crashworthiness research and improvement design of a passenger bus under rollingcrash[J].Mechanical Science and Technology,2005,24(12):1420-1422.
[10]张金换.汽车碰撞安全设计[M].北京:清华大学出版社,2010. 
[11]Altair Engineering,Inc.Radioss Theory Manual 11.0 version[Z].2011.
[12]FMVSS 216a—2009,轿车车顶抗压强度[S].

Memo

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Last Update: 2012-12-29