懸架襯套安裝方向優(yōu)化設計

1、目 次懸架襯套安裝方向優(yōu)化設計（摘要鏈接） 1基于應力優(yōu)化的大客車結構多目標優(yōu)化（摘要鏈接） 2基于BOOST軟件對某款汽油機排氣歧管的優(yōu)化（摘要鏈接） 3轎車柴油機氣門正時和噴油嘴流量仿真與試驗研究（摘要鏈接） 4優(yōu)化設計方法在整車早期開發(fā)中的對比研究（摘要鏈接） 5利用蜂窩結構改善汽車耐撞性的仿真研究（摘要鏈接） 6優(yōu)化設計在汽車零部件輕量化中的應用（摘要鏈接） 7空氣彈簧剛度特性模型及氣體非理想化修正方法研究（摘要鏈接） 8帶復雜花紋的輪胎滑水顯式動力學分析（摘要鏈接） 9燃油2次噴射對柴油機性能的影響研究（摘要鏈接） 10液力機械自動變速器動力性換擋點算法研究（摘要鏈接） 11基于臺架

2、檢測汽車滾動阻力的修正模型（摘要鏈接） 12基于CFD的柴油機進氣流動瞬態(tài)數(shù)值模擬與試驗研究（摘要鏈接） 13球墨鑄鐵轉(zhuǎn)向節(jié)柱疲勞性能研究（摘要鏈接） 14基于變形鎂合金的座椅靠背骨架輕量化設計（摘要鏈接） 15懸架襯套安裝方向優(yōu)化設計郭孔輝 吳利廣 金凌鴿 郭耀華（吉林大學 汽車動態(tài)模擬國家重點實驗室）【摘要】基于ADAMS和iSIGHT軟件，提出了對懸架襯套安裝方向進行優(yōu)化設計的方法及流程。通過調(diào)整懸架襯套安裝方向來改變懸架導向桿系的受力，從而使懸架彈性運動學特性滿足特定要求。以某一轎車麥弗遜前懸架為例，通過優(yōu)化前、后結果的對比分析可知，采用優(yōu)化后的襯套安裝方向，懸架彈性運動學特性參數(shù)得到

3、改善，驗證了該優(yōu)化方法的有效性。關鍵詞：懸架襯套，安裝方向，剛體模型，優(yōu)化設計 The Optimization of Suspension Bushing Mounting DirectionGuo Konghui, Wu Liguang, Jin Lingge, Guo Yaohua(State Key Laboratory of Automobile Dynamic Simulation, Jilin University【Abstract】An optimization method and process of suspension bushing mounting directio

4、n are presented in the paper based on software ADAMS and iSIGHT. By adjusting the bushing mounting direction to change stress of suspension guide rod, elastic kinematic characteristic of suspension thus complies with specific requirements. Simultaneously, this paper takes the Macpherson front suspen

5、sion of a vehicle as an example to verify the validity of this optimization method by comparing the results before and after the optimization.Key words: Suspension bushing; mounting direction; rigid model; optimization基于應力優(yōu)化的大客車結構多目標優(yōu)化丁煒琦 蘇瑞意 桂良進 范子杰（清華大學 汽車安全與節(jié)能國家重點實驗室）【摘要】對某全承載式大客車進行了結構有限元分析，研究了該客

6、車結構強度、振動模態(tài)頻率、質(zhì)量等多個性能目標的優(yōu)化設計問題。分析結果表明，該客車初始設計模型的剛度滿足設計要求但應力較大，強度儲備不足，因此采用優(yōu)化結構最大應力的方法進行優(yōu)化。經(jīng)過兩個階段的優(yōu)化設計，顯著降低了結構最大應力，提高了一階扭轉(zhuǎn)頻率，減輕了車身骨架質(zhì)量，客車結構設計更為合理。關鍵詞：客車；全承載式；有限元；結構優(yōu)化Multi-objective Optimization on Bus Structure Based on Optimizing StressDing Weiqi, Su Ruiyi, Gui Liangjin & Fan Zijie（State Key Laborato

7、ry of Automotive Safety and Energy,Department of Automotive Engineering, Tsinghua University, Beijing 100084）【Abstract】Structural finite element analysis on an integral bus was performed, and optimal design of multiple objectives of static strength, stiffness, modal frequency and mass was researched

8、. The result of finite element analysis showed that the stiffness of the initial design model of bus met design requirements, but the stress was very large and the strength reserve was relatively poor, so the optimization method which optimizing the maximum stress of structure was adopted. After the

9、 optimal design composed of two stages, the maximum stress was significantly reduced, the first-order torsional frequency were improved, the weight of body skeleton was lightened, and the structural design of the bus was more reasonable. Key words: Integral Bus; FEA; Multi-objective Optimization; St

10、ress Optimization基于BOOST軟件對某款汽油機排氣歧管的優(yōu)化周毅 黃文凱 陳青華(同濟大學【摘要】利用AVL BOOST軟件對某款汽油機進行了一維不穩(wěn)定流動模擬計算，發(fā)現(xiàn)4-1的排氣歧管連接方式影響發(fā)動機的充氣效率。將排氣歧管連接方式由原來的4-1改為4-2-1，且在不影響各缸充氣效率的情況下，微調(diào)排氣歧管的長度得到3種方案。通過比較功率和扭矩確定方案2為最佳方案，并按改進方案2設計排氣系統(tǒng)進行了試驗。結果表明，與原方案相比，按方案2改進排氣系統(tǒng)后發(fā)動機功率提高，且其燃油消耗曲線更加平坦，低油耗范圍擴大。主題詞：汽油機 排氣歧管 優(yōu)化 Optimization for A G

11、asoline Engine Exhaust Manifold based on BOOST SoftwareZhou Yi, Huang Wenkai, Chen Qinghua 【Abstract】One-dimensional unstable flow simulation is carried out for a gasoline engine with AVL Boost software, the results indicate that the 4-1 connection of the exhaust manifold affects engine volumetric e

12、fficiency. Consequently, the connection of the exhaust manifold is modified from 4-1 to 4-2-1, and three plans of the exhaust manifold are obtained without affecting volumetric efficiency of each cylinder. By comparing power and torque, Plan 2 is defined as the optimal one, and the exhaust system wi

13、th the modified Plan 2 is tested. The results show that, compared with the original plan, engine power increases, fuel consumption curve becomes more flat and the low fuel consumption ranges widens.Key words：Gasoline engine; Exhaust manifold; Optimization轎車柴油機氣門正時和噴油嘴流量仿真與試驗研究周岳康1，2 董堯清1 韓文艷1,3（1.同濟

14、大學；2.上海汽車技術中心；3.中北大學）【摘要】利用AVL BOOST軟件建立了柴油機仿真計算模型，針對噴油嘴流量為710ml/min時全負荷工況下柴油機功率和比油耗進行了計算。計算結果與試驗結果的對比表明該計算模型正確有效。在不改變氣門升程的情況下，利用該仿真模型對配氣正時進行了優(yōu)化，并在此基礎上模擬研究了不同噴油嘴流量對柴油機全負荷性能的影響。結果表明，優(yōu)化方案可使柴油機中低速扭矩、燃油耗和NOx排放得到改善，且排放可達到歐標準。主題詞: 轎車柴油機 氣門正時 噴油嘴流量 仿真 試驗Simulation and Test Study of the Valve Timing and Inj

15、ector Flow Rate of Diesel Engine for Passenger CarZhou Yuekang1，2, Dong Yaoqing1, Han Wenyan1，3(1. Tongji University；2. SAIC Motor Technical Center；3. North University of China【Abstract】A simulation model of diesel engine is established with AVL BOOST software to calculate diesel engine power and sp

16、ecific fuel consumption under the full load cycle of 710ml/min of injector flow, the comparison between calculation result and test result indicates that this computation model is correct and effect. Without changing valve lift, the valve timing is optimized firstly, and then the effect of different

17、 fuel injector rate on full-load performance of the diesel engine is studied by simulation. The results show that, not only the low-middle velocity torque and fuel consumption, but also the NOX emission are improved with the optimized proposal, moreover, Euro IV emission target is satisfied.Key word

18、s: Diesel Engine for car, Valve timing, Fuel injector rate, Simulation, Test優(yōu)化設計方法在整車早期開發(fā)中的對比研究姜欣 陳勇 史國宏 江峰 （泛亞汽車技術中心有限公司）【摘要】結合整車優(yōu)化設計方法的理論特點和整車早期開發(fā)中應用優(yōu)化設計過程的經(jīng)驗，對工程中常用的幾種試驗設計方法、近似模型方法和優(yōu)化算法進行了對比研究。利用整車開發(fā)中常見的剛度、模態(tài)、被動安全性分析等一些案例論證了各種方法的特點、優(yōu)劣、優(yōu)化效率和適用范圍，獲得了一些整車開發(fā)中應用優(yōu)化設計方法的實用性結論。主題詞: 整車開發(fā) 試驗設計 近似模型 優(yōu)化算法 Co

19、mparative Study of Optimization Design Method in the Early Stage of Vehicle DevelopmentJiang Xin, Chen Yong, Shi Guohong, Jiang Feng（Pan Asia Technical Automotive Center Co., Ltd）【Abstract】Comparative study is made to some DOE methods, approximation model method and optimization method based on theo

20、retical characteristics of vehicle optimization design method and the experience of optimization design in the early stage of vehicle development. The characteristics, advantages and disadvantages, optimization efficiency as well as scope of application of different methods are verified with some ca

21、ses of analysis of stiffness, modal, passive safety, etc., frequently used in vehicle development, from which some practical conclusion of optimization design used in vehicle development is obtained.Key words: Vehicle Development, Design of experiment, Approximation model; Optimization algorithm利用蜂窩

22、結構改善汽車耐撞性的仿真研究簡堅得1 蘭鳳崇1 饒建強1 吳成明2（1.華南理工大學；2.浙江吉利汽車研究院）【摘要】 在汽車碰撞過程中，汽車前縱梁是主要的吸能裝置。通過對方管薄壁結構和蜂窩型多胞結構的耐撞性進行對比分析可知，蜂窩型多胞結構桿件具有較好的吸能特性。將蜂窩型桿件應用于汽車前縱梁上進行碰撞分析，結果顯示，蜂窩型多胞結構具有更優(yōu)越的耐撞性能，且碰撞過程的材料利用率也較高。關鍵詞：碰撞；蜂窩結構；吸能特性A Simulation Study on Improving Vehicle Crashworthiness with Honeycomb StructureJian Jiande1

23、 Lan Fengchong1 Rao Jianqiang1 Wu Chengming2(1.South China University of Technology; 2.Zhejiang Geely Automotive Research Institute Co., Ltd【Abstract】The front longitudinal beam is the main energy absorber during crash of the vehicle. It is concluded by comparing and analyzing crashworthiness of the

24、 square tube thin-walled structure and honeycomb type multi-cell structure that the honeycomb multi-cellular structural component has good energy-absorption characteristic. When such component is applied to a the front longitudinal beam, it is shown that the multi-cellular component is effective to

25、improve the crashworthiness of a vehicle, in addition, utilization rate of material during the crash process is also higher.Key words: Crash; honeycomb structure; energy-absorption characteristic優(yōu)化設計在汽車零部件輕量化中的應用蔡鋒 張亮亮 劉旌揚（一汽海馬汽車股份有限公司）【摘要】簡述了優(yōu)化設計的理論基礎。建立了某車型駐車手柄組件有限元模型，并進行了該組件橫向剛度校核和靜強度校核，結果表明其橫向剛度

26、和靜強度均滿足標準要求。為實現(xiàn)該駐車手柄組件輕量化，分別對其支架和手柄進行拓撲優(yōu)化和形貌優(yōu)化。優(yōu)化結果表明，新結構駐車手柄組件在滿足橫向剛度和靜強度標準要求的同時使新結構支架質(zhì)量減輕了3.5%。主題詞：優(yōu)化設計 駐車手柄組件 輕量化 Application of Optimization Design in the Lightweight of Automotive ComponentsCai Feng, Zhang Liangliang, Liu Jingyang(FAW HAIMA AUTOMOBILE CO., LTD【Abstract】Theoretical basis of opti

27、mization design is briefed in the paper. And a FE model of parking brake handle assembly of a car model is established, and lateral rigidity and static strength of this assembly are checked. The results show that both lateral rigidity and static strength of this assembly meet requirement of standard

28、. For the lightweight design of the parking brake handle assembly, topological and topographic optimization is made to the brake bracket and handle. The result of optimization show that with the new parking brake handle assembly, not only lateral rigidity and static strength comply with requirement

29、of standard, but also the mass of the new bracket is reduced by 3.5%.Key words: Optimization design, Parking brake handle assembly, Lightweight空氣彈簧剛度特性模型及氣體非理想化修正方法研究陳龍 趙華偉 江浩斌 汪少華（江蘇大學）【摘要】基于范德瓦耳斯方程建立了3類空氣彈簧的剛度特性模型，通過理論分析可知，以往的模型不能反映范德瓦耳斯常數(shù)、空氣彈簧初始壓力和溫度等氣體非理想化因素的影響，為此引入一個表征氣體非理想化特性的無量綱因子進行修正。仿真計算結果表

30、明，在低溫高壓的情況下，基于理想氣體狀態(tài)方程的空氣彈簧剛度特性模型存在較大誤差；引入可改善空氣彈簧剛度特性模型的適用性。主題詞：空氣彈簧 剛度特性 范德瓦耳斯方程 修正因子Study on Air Spring Stiffness Characteristic Model and Amendment to the Non-ideal GasChen Long Zhao Huawei Jiang Haobin Wang Shaohua（Jiangsu University）【Abstract】Three types of air spring stiffness characteristic m

31、odels are established based on Van Der Waals Equation. It is known from theoretical analysis that the previous models can not reflect the influence of gas non-ideal factors such as van der Waals constant, initial pressure of air spring, temperature and so on. Therefore, a non-dimensional factor H wh

32、ich represents the characteristic of non-ideal gas was introduced to amend. The simulation results show that, under the condition of low temperature and high pressure, there is great error in the air spring stiffness model based on the state equation of ideal gas. The introduced factor H can improve

33、 the applicability of air spring stiffness model.Key words: Air spring; stiffness characteristic; Van der Waals equation; correction factor帶復雜花紋的輪胎滑水顯式動力學分析趙珍輝 李子然 汪洋（中國科學技術大學 中科院材料力學行為和設計重點實驗室）【摘要】以205/55R16型半鋼子午線輪胎為參考輪胎，利用組合類保角映射簇建模法構建了3種不同胎面花紋的輪胎有限元分析模型。利用該模型進行載荷-下沉量及流體壓力-行駛速度分析結果表明，輪胎有限元模型和骨架材料的

34、等效簡化方法以及滑水求解策略有效。在此基礎上，考察了胎面花紋形態(tài)對輪胎滑水性能的影響，結果表明，S型輪胎和V型輪胎由于橫向花紋溝的存在，滑水性能優(yōu)于縱溝胎。 主題詞：輪胎；滑水性能；胎面花紋；有限元Explicit Dynamic Analysis of Hydroplaning for Tire with Complex Tread PatternZhao Zhenhui, Li Ziran Wang Yang(University of Science & Technology of China, Key laboratory for Materials Mechanical Behavi

35、or and Design, USTC【Abstract】 Based on 205/55R16 steel-belted radial tire, the finite element models of three types of tires with complex tread pattern are constructed using combined conformal transformation cluster modeling method. The result of load-sinkage and fluid pressure-driving speed analysi

36、s indicates that the equivalent simplified method and hydroplaning solution strategy of tire FE model and skeleton material are effective. On this basis, the influence of tire tread pattern on tire hydroplaning performance is investigated. The results show that the hydroplaning performance of S shap

37、e pattern tire and V shape pattern tire is superior to that of tire with longitudinal groove due to the horizontal groove pattern.Key words: Tire; Hydroplaning performance; Tread pattern; Finite element燃油2次噴射對柴油機性能的影響研究姚勇1.2 Alvaro Diez Rodriguez（西班牙）2 Hua Zhao（英國）2（1.河北師范大學； 2.Brunel University）【摘要

38、】研究了主噴射啟始角和后噴射啟始角對Ricardo Hydra 單缸柴油機動力性能及排放性能的影響。結果表明，當該柴油機主噴射啟始角為11、后噴射啟始角為3時，柴油機最高爆發(fā)壓力與采用單噴射時最高爆發(fā)壓力相差不大，但平均有效壓力卻提高明顯；隨著噴油啟始角的后移，煙度排放增加，N0x排放減少，HC排放增加。分析了主噴射和后噴射時該柴油機燃燒過程。主題詞：柴油機 二次噴射 性能 Investigation on Influence of Secondary Fuel Injection on Diesel Engine PerformanceYao Yong1.2, Alvaro Diez Rod

39、riguez2, Hua Zhao2(1.Hebei Normal University; 2.Brunel University【Abstract】The influence of main injection starting angle and post-injection starting angle on dynamic property and emission of Ricardo Hydra single-cylinder diesel engine is studied in the paper. The results show that when main injecti

40、on starting angle and post-injection starting angle of this diesel engine are 11 and 3 respectively, the maximum explosion pressure differs slightly with that of single-point injection, whereas the mean effective pressure increases remarkably; with the rearward shift of starting injection angle, smo

41、ke emission increases, NOx emission decreases, while HC emission increases. The combustion process of this diesel engine during main injection and post injection are analyzed in the paper.Key words: Diesel engine; secondary injection; performance.液力機械自動變速器動力性換擋點算法研究 李春芾1 陳慧巖1 鄭廣軍2 李艷琴2（1北京理工大學；2內(nèi)蒙古交

42、通職業(yè)技術學院）【摘要】為得到發(fā)動機與液力變矩器共同工作點及動力性換擋點精確計算結果，對發(fā)動機凈轉(zhuǎn)矩外特性曲線采用三次樣條插值，并構造了求解共同工作點及動力性換擋點的求值函數(shù)，分別采用改進二分法和牛頓下山法來求解構造函數(shù)零值。通過實例計算和分析表明，這2種方法運行速度快、精度高，求得的動力性換擋特性提高了液力傳動車輛的匹配效率。主題詞：液力機械自動變速器 動力性換擋點 算法Study on the Calculation Method of the Power Shift Point of Hydro-mechanical Automatic TransmissionLi Chunfu1 Ch

43、en Huiyan1 Zheng Guangjun2 Li Yanqin2(1. Beijing Institute of Technology; 2. Inner Mongolia Communications Polytechnic【Abstract】To obtain the common operating point of engine and torque converter and an accurate calculation result of the power shifting point, cubic spline interpolation is adopted fo

44、r the exterior characteristic of engine net torque, and the evaluation function is established to solve the common operating point and power shifting point, and the modified dichotomy and Newton Downhill Method are employed respectively to solve zeros of constructed function. The example calculation

45、 and analysis indicate that the two methods operate with rapid speed and high precision, the obtained power shifting characteristic improves matching efficiency of vehicle with hydraulic transmission.Key words: Hydro-mechanical transmission; Power shifting point; Calculation method基于臺架檢測汽車滾動阻力的修正模型林

46、彩霞1 劉浩學2 (1.華南農(nóng)業(yè)大學; 2.長安大學）【摘要】通過研究底盤測功機臺架與實際道路的滾動阻力之間存在的差異，以及對車輪在臺架上滾動阻力的分析，建立了車輛臺架檢測滾動阻力修正模型。以某型汽車為例，對該模型進行了臺架對比試驗驗證。利用該模型求得檢測車輛在任意滾筒直徑的底盤測功機上的加載功率，其精度滿足測功機檢測規(guī)程中的規(guī)定。主題詞：滾動阻力 底盤測功機 修正模型Revising Model of Automobile Rolling Resistance based on Bench TestLin Caixia1, Liu Haoxue2 (1.South China Agricul

47、tural University; 2. Changan University【Abstract】 By studying the difference of rolling resistance between chassis dynamometer bench and road, and analyzing the rolling resistance of wheels on bench, a revising model to test rolling resistance of vehicle bench is built. The paper takes a vehicle as

48、example to compare and test the model with stand. With the aid of this model, loading power of the tested vehicle on the chassis dynamometer with random barrel diameter is obtained with accuracy in compliance with the requirement of dynamometer test regulation.Key Words: Rolling resistance; dynamome

49、ter; revising model基于CFD的柴油機進氣流動瞬態(tài)數(shù)值模擬與試驗研究胡云萍1 石秀勇2 鄭媛媛3（1聊城大學；2.同濟大學；3.山東交通學院）【摘要】采用經(jīng)壓縮修正的k-雙方程湍流模型對一臺車用4氣門6缸柴油機的單缸換氣過程、進氣壓縮過程進行了CFD瞬態(tài)模擬計算。結果表明，對于該柴油機，其氣門疊開期發(fā)生了廢氣倒流入進氣道現(xiàn)象；切向氣道和螺旋氣道的氣流之間存在著相互影響；進氣結束時在渦流以外還存在縱向的渦，在壓縮行程中這些渦在高速轉(zhuǎn)動的同時能量發(fā)生耗散，并將能量傳遞給周圍流場，誘導出一個反方向的縱渦。氣道穩(wěn)流試驗結果表明，對流量系數(shù)和渦流比的模擬計算結果與試驗結果吻合較好。主題

50、詞：直噴柴油機 進氣流動 數(shù)值模擬 試驗Transient value Simulation and Experimental Study on Air Intake Flow of Diesel Engine based on CFD Hu Yunping1 Shi Xiuyong2 Zheng Yuanyuan3(1.Liaocheng University；2.Tongji University; 3.Shandong Jiaotong University【Abstract】The gas exchange process, air intake and compression pro

51、cess of a 4-valve 6-cylinder diesel engine were numerically simulated with compressible corrected k-two-equation turbulence model using CFD software. The simulated results show that exhaust gas flowed backward into intake port in the valves overlap duration. It was found that helical and tangent int

52、ake port had a disturbance flow with each other, and there was a lengthways swirl when the air intake process had finished. In the compression stroke, the energy of swirl dissipated continually and was transferred to the surrounding flow field, then an inverted lengthways swirl was induced. The expe

53、riment results show that simulation calculation result is identical with test result of flow coefficient and swirl ratio.Key words: Direct injection diesel engine, Air intake flow, Numerical simulation, Test球墨鑄鐵轉(zhuǎn)向節(jié)柱疲勞性能研究高秋金，徐志軍，晏金軍（上海大眾汽車有限公司）【摘要】針對某車型球墨鑄鐵轉(zhuǎn)向節(jié)柱轉(zhuǎn)向橫拉桿臂疲勞臺架試驗不合格的情況，利用CAE技術模擬分析了該零件結構對疲勞性能的影響，通過對比試驗研究了球墨鑄鐵主要化學成分對球墨鑄鐵機械性能和疲勞壽命的影響，并提出局部增大壁厚、改善過渡圓角的改進措施。經(jīng)過試驗驗證，在質(zhì)量不增加的情況下，改進后的球墨鑄鐵轉(zhuǎn)向節(jié)柱疲勞壽命比改進前提高30%。主題詞：轉(zhuǎn)向節(jié)柱 球墨鑄鐵 疲勞壽命 Research on Fatigue Performance of Ductile Iron Steering KnuckleGao Qiujin, Xu Zhijun, Yan Jinjun(Shanghai Volkswage