长沙理工大学学报（自然科学版）
長沙理工大學學報（自然科學版）
장사리공대학학보（자연과학판）
Journal of Changsha University of Science and Technology (Natural Science)
2015年
3期
21-27
,共7页
交通工程%试验长度%变态模型%柔性车辆约束系统%有限元仿真
交通工程%試驗長度%變態模型%柔性車輛約束繫統%有限元倣真
교통공정%시험장도%변태모형%유성차량약속계통%유한원방진
traffic engineering%test length%distorted scaled model%flexible constraints ve-hicle system%simulated analysis
为了研究出一套适合柔性车辆约束系统试验长度变态模型,根据国内最新护栏评价标准,通过建立汽车-护栏有限元模型,并基于冲击载荷下几何变态模型方法,展开了对柔性车辆约束系统试验长度方向变态试验分析。首先,对比长度为80m和200m的柔性车辆约束系统仿真数据,得知在碰撞试验中护栏长度变化对柔性车辆约束系统数据结果影响较大；其次,利用几何变态模型理论,以客车最大加速度和最大偏移量为定量评价指标,得到柔性车辆约束系统理论变态模型；最后,通过仿真计算确定NV,获得长度变态模型。通过柔性车辆约束系统长度变态模型预测,得到的结果与长度为200m的柔性护栏数据的误差在5%以内。该长度变态模型试验方法能直接运用到实际试验研究中。
為瞭研究齣一套適閤柔性車輛約束繫統試驗長度變態模型,根據國內最新護欄評價標準,通過建立汽車-護欄有限元模型,併基于遲擊載荷下幾何變態模型方法,展開瞭對柔性車輛約束繫統試驗長度方嚮變態試驗分析。首先,對比長度為80m和200m的柔性車輛約束繫統倣真數據,得知在踫撞試驗中護欄長度變化對柔性車輛約束繫統數據結果影響較大；其次,利用幾何變態模型理論,以客車最大加速度和最大偏移量為定量評價指標,得到柔性車輛約束繫統理論變態模型；最後,通過倣真計算確定NV,穫得長度變態模型。通過柔性車輛約束繫統長度變態模型預測,得到的結果與長度為200m的柔性護欄數據的誤差在5%以內。該長度變態模型試驗方法能直接運用到實際試驗研究中。
위료연구출일투괄합유성차량약속계통시험장도변태모형,근거국내최신호란평개표준,통과건립기차-호란유한원모형,병기우충격재하하궤하변태모형방법,전개료대유성차량약속계통시험장도방향변태시험분석。수선,대비장도위80m화200m적유성차량약속계통방진수거,득지재팽당시험중호란장도변화대유성차량약속계통수거결과영향교대；기차,이용궤하변태모형이론,이객차최대가속도화최대편이량위정량평개지표,득도유성차량약속계통이론변태모형；최후,통과방진계산학정NV,획득장도변태모형。통과유성차량약속계통장도변태모형예측,득도적결과여장도위200m적유성호란수거적오차재5%이내。해장도변태모형시험방법능직접운용도실제시험연구중。
In order to develop a suitable length distorted model of the New Flexible Vehicle Constraints System,according to current available evaluation standard,the geometrically distorted scaled models analysis was implemented on length direction of the New Flexible Vehicle Constraints System by establishing the system of “vehicle-barrier”FEA model and using the geometrically distorted scaled models method of structures under impact loads. The change in length is a significant influence to the New Flexible Vehicle Constraints Sys-tem by comparing of length of 80 m and 200 m flexible vehicle restraint system simulation data.Secondly,by using the geometric distorted model theory,with maximum acceleration and maximum offset of the bus for quantitative evaluation indexes,a theory distorted model of the New Flexible Vehicle Constraints System is obtained.Finally,through simulation de-termined to get the length of the flexible vehicle restraint system metamorphosis model. The results are obtained with the length of flexible guardrail 200 m data error in 5%.
