[1]王良模,陈东益,袁刘凯,等.某专用校车顶部安全性能仿真与改进[J].南京理工大学学报(自然科学版),2012,36(06):0.
 WANG Liang mo,CHEN Dong yi,YUAN Liu kai,et al.Simulation and Improvement of Safety Performances of a Certain School Bus[J].Journal of Nanjing University of Science and Technology,2012,36(06):0.
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某专用校车顶部安全性能仿真与改进
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
36卷
期数:
2012年06期
页码:
0
栏目:
出版日期:
2012-12-31

文章信息/Info

Title:
Simulation and Improvement of Safety Performances of a Certain School Bus
作者:
王良模 1陈东益 1袁刘凯 2张遵智 2张汤赟 2
1.南京理工大学 机械工程学院,江苏 南京 210094;2.南京依维柯汽车有限公司,江苏 南京 210028
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
关键词:
校车安全性能有限元分析翻滚保护顶部抗压强度
Keywords:
school busessafety performancesfinite element analysisrollover protectionroof crush resistance
分类号:
U461.91
摘要:
为提高专用校车顶部安全性,对某专用校车在翻滚事故中的顶部结构对乘员的保护作用进行了研究。利用Hypermesh与Hypercrash软件建立其车身有限元模型。针对碰撞包含几何非线性、材料非线性和边界非线性的特点,选择并定义了合适的非线性材料和壳单元,进行了焊接及其他连接方式的模拟。利用RADIOSS求解器,进行校车翻滚保护仿真及乘用车顶部抗压强度仿真。结果表明:在翻滚保护仿真中,该车车身结构能承受标准要求的1.5倍整备质量载荷,在顶部抗压强度仿真中,施力板下表面侵入量为46 mm,满足标准要求。参照有关国际标准,对A柱及横梁结构进行改进设计,使单根横梁的最大承载能力达到64 700 N,提高了该车的翻滚保护性能。
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.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2012-03-12修回日期:2012-10-21 基金项目:江苏省产学研前瞻性联合研究项目(BY2009109) 者简介:王良模(1963-),男,教授,博士生导师,主要研究方向:车辆系统动力学、车辆动态模拟与仿真,Email:liangmo@njust.edu.cn。
更新日期/Last Update: 2012-12-29