振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2014年
22期
30-34
,共5页
左建勇%朱晓宇%吴萌岭
左建勇%硃曉宇%吳萌嶺
좌건용%주효우%오맹령
高速列车%制动风翼%鸟撞%复合材料%有限元分析
高速列車%製動風翼%鳥撞%複閤材料%有限元分析
고속열차%제동풍익%조당%복합재료%유한원분석
high-speed train%aerodynamic brake wing%bird impact%composite laminate%finite element analysis
对研制的复合材料高速列车风阻制动风翼建立有限元模型。据接触-碰撞基本理论利用非线性动力分析软件 LS -DYNA 对鸟撞制动风翼过程数值仿真,将计算结果与实验数据对比验证仿真过程的合理性。结果显示,该制动风翼能承受500 km/h 鸟体撞击,极限能达625 km/h,满足要求设计。鸟撞过程中制动风翼变形具有冲击波传递特征,应力峰值主要出现在被撞击区域,与底座相连部分及摇臂附近也会出现应力集中。
對研製的複閤材料高速列車風阻製動風翼建立有限元模型。據接觸-踫撞基本理論利用非線性動力分析軟件 LS -DYNA 對鳥撞製動風翼過程數值倣真,將計算結果與實驗數據對比驗證倣真過程的閤理性。結果顯示,該製動風翼能承受500 km/h 鳥體撞擊,極限能達625 km/h,滿足要求設計。鳥撞過程中製動風翼變形具有遲擊波傳遞特徵,應力峰值主要齣現在被撞擊區域,與底座相連部分及搖臂附近也會齣現應力集中。
대연제적복합재료고속열차풍조제동풍익건립유한원모형。거접촉-팽당기본이론이용비선성동력분석연건 LS -DYNA 대조당제동풍익과정수치방진,장계산결과여실험수거대비험증방진과정적합이성。결과현시,해제동풍익능승수500 km/h 조체당격,겁한능체625 km/h,만족요구설계。조당과정중제동풍익변형구유충격파전체특정,응력봉치주요출현재피당격구역,여저좌상련부분급요비부근야회출현응력집중。
A finite element model of the bird and composite brake wing on high speed train was established.Based on contact-collision theory and by using non-linear dynamic analysis software LS-DYNA the process of bird impact on aerodynamic brake wing was simulated.Through the comparison of the experiment and numerical simulation results,the rationality and feasibility of the model were verified.The simulation results show that the designed brake wing can withstand the bird strike with a speed of 500 km /h and the limiting case is the bird velocity reaching about 625 km /h.In the impact process,the deformation history of the brake wing shows the feature of shock wave transmission.The peak stress mainly distributes in the surrounding of impacted area and the stress concentration may appear in the vicinity of the part connected to the bottom case and rocker arm.