本文選題：動力穩(wěn)定車 + 動力學分析��； 參考：《昆明理工大學》2017年博士論文

【摘要】：本文是結(jié)合中國鐵建高新裝備股份有限公司的新產(chǎn)品研發(fā)項目"動力穩(wěn)定車新型穩(wěn)定裝置的研發(fā)"進行的,針對項目研發(fā)過程中遇到的關(guān)鍵問題,本文從新型穩(wěn)定裝置的作業(yè)效果研究和關(guān)鍵部件的失效問題研究兩個方面著手。首先對既有動力穩(wěn)定車的穩(wěn)定裝置作業(yè)時的橫向激振進行分析研究,將現(xiàn)場實驗分析和虛擬仿真結(jié)果提供的軌枕系統(tǒng)響應作為開發(fā)的參考依據(jù),并在此基礎(chǔ)上運用虛擬樣機技術(shù),結(jié)合剛?cè)狁詈隙囿w動力學,研究新型穩(wěn)定裝置作業(yè)響應,評價其作業(yè)效果;同時,借助動力學仿真輸出的懸掛板彈簧作業(yè)期間的載荷譜,對物理樣機實驗中發(fā)生失效的懸掛板彈簧進行系統(tǒng)分析。為新型穩(wěn)定車穩(wěn)定裝置的開發(fā)設(shè)計提供數(shù)據(jù)參考和技術(shù)支持。應用車輛軌道動力學理論,建立了動力穩(wěn)定車整車在走行和作業(yè)情況下的數(shù)學模型。根據(jù)其建立仿真模型,并借助剛?cè)狁詈蟿恿W理論,進行了一系列不同工況下的作業(yè)仿真,得到了穩(wěn)定車的穩(wěn)定裝置、軌道以及軌枕的橫向加速度響應曲線,以及不同工況下穩(wěn)定裝置對軌道的輪軌激振力曲線和道碴激振力曲線,討論了激振頻率和垂向靜壓力這兩個主要作業(yè)參數(shù)對輸出的影響。同時進行現(xiàn)場作業(yè)試驗對比,獲得了動力穩(wěn)定車的實際作業(yè)響應,驗證仿真結(jié)果的有效性,確立了新型穩(wěn)定裝置研發(fā)的參考數(shù)據(jù),并通過實驗中軌道系統(tǒng)的橫向加速度響應對比了相關(guān)貨車動力學研究結(jié)果,從時域和頻域兩個方面證明了動力穩(wěn)定車作業(yè)的有效性。研究介紹了一種新型穩(wěn)定裝置,基于多體動力學理論,對新型穩(wěn)定裝置的各個構(gòu)件進行運動分析,結(jié)合拉格朗日方法建立該穩(wěn)定裝置橫向激振的微分方程組并采用新型預測-校正積分法求解,同時采用多剛體仿真模型驗證結(jié)果,初步分析新型穩(wěn)定裝置的作業(yè)響應,驗證該結(jié)構(gòu)的可行性。隨后建立了新型穩(wěn)定裝置的剛?cè)狁詈咸摂M樣機模型,參考實際情況,采用了兩組常用參數(shù)以及一組極限工況參數(shù)進行作業(yè)仿真,分析新型穩(wěn)定裝置較既有結(jié)構(gòu)的優(yōu)勢。針對新型穩(wěn)定結(jié)構(gòu)關(guān)鍵部件的失效分析,提出了一種基于裂紋嘴開口位移(Crack Mouth Opening Displacement,簡稱CMOD)估算J積分的工程預估方法。該方法在工程實際應用中,利用裂紋構(gòu)件因子β與構(gòu)件受力無關(guān)的特性,通過測量裂紋件的CMOD以來估算J積分以及應力強度因子等斷裂韌性參數(shù)。文中以三點彎曲試件為例,將仿真和實驗兩個方面取得的J積分對比,驗證了 CMOD與J積分的關(guān)系,并通過另一種加載模式的試件介紹了該方法的使用。這種預估方法在斷裂研究分析的初期用來預估、評價某斷裂問題將會非常便捷。在前述研究基礎(chǔ)上,對新型穩(wěn)定裝置樣機實驗中失效的懸掛板彈簧進行了研究,從零件的材料性能,幾何特征,斷裂力學特征等幾個方面進行了較為詳細的分析。借助擴展有限元方法對懸掛板彈簧進行了穩(wěn)定裝置作業(yè)工況下的受力分析,獲得了裂紋的萌生與擴展隨時間的變化曲線。隨后根據(jù)裂紋長度將斷裂擴展的過程分為三個階段進行分析,研究了不同裂紋長度時應力強度因子隨著加載的變化,并利用CMOD方法估測了不同裂紋長度時加載裂紋尖端的應力強度因子,然后與不同復合型裂紋準則的結(jié)果進行了對比,并在最后對失效構(gòu)件進行了總結(jié)提出了修改建議。
[Abstract]:This paper is based on the research and development of new product R & D project of China's China Iron and technology high-tech equipment (Limited by Share Ltd) new product research and development project. In view of the key problems encountered in the project R & D process, this paper begins with two aspects of the research on the operation effect of the new stable device and the failure of the key components. The transverse excitation of the stable device is analyzed and studied. The response of the sleeper system provided by the field experiment analysis and the virtual simulation results is taken as the reference basis. On this basis, the virtual prototyping technology is used and the rigid flexible coupling multi-body dynamics is used to study the operation response of the new stable device and evaluate its work. At the same time, with the aid of the load spectrum of the suspension plate spring during the dynamic simulation, the suspension plate spring of the physical prototype is systematically analyzed. The data reference and technical support are provided for the development and design of the new stable vehicle stability device. The dynamic stability vehicle is established by using the theory of vehicle track dynamics. A mathematical model of the whole vehicle under the condition of walking and operation. Based on the simulation model, and using the rigid flexible coupling dynamics theory, a series of work simulation under different working conditions has been carried out. The stability device of the stable vehicle, the track and the lateral acceleration response curve of the sleeper, and the wheel and rail of the stable device to the track under different working conditions are obtained. The exciting force curve and the ballast excitation force curve are discussed, and the effects of the two main operating parameters of the exciting frequency and vertical static pressure on the output are discussed. At the same time, the actual operation response of the dynamic stable vehicle is obtained, the effectiveness of the simulation results is verified, and the reference data of the new stable device are established and passed. In the experiment, the lateral acceleration response of the track system is compared with the results of the study on the dynamics of the truck. The effectiveness of the dynamic stable vehicle is proved from two aspects of the time domain and the frequency domain. A new stable device is introduced. Based on the theory of multi-body dynamics, the motion analysis of the new stable installed components is carried out with lagorang. The diurnal method establishes the differential equations of the lateral vibration of the stable device and uses a new prediction correction integral method. At the same time, the results are verified by the multi rigid body simulation model. The operation response of the new stable device is analyzed and the feasibility of the structure is verified. Then the rigid flexible coupling virtual prototype model of the new stabilization device is established, and the reference is established. In practice, two groups of common parameters and a group of limit working parameters are used to simulate the operation of the new stable device. In view of the failure analysis of the key components of the new stable structure, a project based on the crack mouth opening displacement (Crack Mouth Opening Displacement, abbreviated as CMOD) is proposed to estimate the J integral. In the practical application of the method, the method is used to estimate the fracture toughness parameters such as J integral and stress intensity factor by measuring the CMOD of the crack member and the stress intensity factor, by using the characteristic of the factor beta of the crack member and the force of the component. The three point bending specimen is taken as an example to compare the J integral of the simulation and experimental two aspects and verify the CMOD The relationship between the J integral and the test part of another loading mode is introduced. This method is used to predict the fracture problem at the beginning of the fracture analysis, and it will be very convenient to evaluate a fracture problem. On the basis of the previous research, the suspension plate springs which are invalid in the prototype experiment of the new stable device are studied, from the parts. The material properties, geometric features and fracture mechanics characteristics are analyzed in detail. The extended finite element method is used to analyze the stress of the suspension plate spring under the working condition of the stabilizing device. The curve of the crack initiation and propagation with the time is obtained. Then the fracture expansion process is divided according to the crack length. For the three stages, the stress intensity factors of different crack lengths with the loading are studied, and the stress intensity factor of the crack tip at different crack lengths is estimated by the CMOD method, and then the results are compared with the results of the different composite crack criteria. Finally, the failure components are summarized and put forward. Revise the suggestion.
【學位授予單位】：昆明理工大學
【學位級別】：博士
【學位授予年份】：2017
【分類號】：U216.6

【相似文獻】

相關(guān)期刊論文 前10條

1 馬占川;;動力穩(wěn)定車穩(wěn)定頭垂直下壓力控制系統(tǒng)技術(shù)改造的探討[J];鐵道建筑;2008年08期

2 龔軍;陳平松;;網(wǎng)絡(luò)控制技術(shù)在動力穩(wěn)定車上的應用[J];機車電傳動;2010年06期

3 李偉成;晏彤;高正卿;何桂源;;動力穩(wěn)定車動力頭對車架的動力分析[J];輕工科技;2013年06期

4 劉家騏;;動力穩(wěn)定車電子控制線路板技術(shù)鑒定會在錦州召開[J];鐵道科技動態(tài);1989年07期

5 蘇保生;動力穩(wěn)定車穩(wěn)定裝置的國產(chǎn)化研究[J];鐵道建筑;1997年02期

6 宋慧京;軌道的動力穩(wěn)定是現(xiàn)代化養(yǎng)路中一個重要的經(jīng)濟因素[J];鐵道建筑;1992年02期

7 姜成勇;薛占軍;;WD320型動力穩(wěn)定車電氣控制系統(tǒng)改進分析[J];科技風;2013年18期

8 程立;提高WD320型動力穩(wěn)定車橫向平穩(wěn)性性能方法的探討[J];鐵道機車車輛;1997年02期

9 張紅梅;WD320動力穩(wěn)定車作業(yè)掛擋方式的缺陷分析與改造[J];鐵道建筑;2003年06期

10 李勝;WD320型動力穩(wěn)定車新型走行齒輪的研制[J];鐵道機車車輛工人;2003年11期

相關(guān)會議論文 前2條

1 鄧強國;胡斌;黃亞宇;;動力穩(wěn)定車中心銷總成系統(tǒng)高速走行動力學分析[A];戰(zhàn)略性新興產(chǎn)業(yè)的培育和發(fā)展——首屆云南省科協(xié)學術(shù)年會論文集[C];2011年

2 鄧強國;胡斌;黃亞宇;;動力穩(wěn)定車中心銷總成系統(tǒng)高速走行動力學分析[A];2011裝備制造業(yè)綠色創(chuàng)造 節(jié)能減排發(fā)展論壇論文集[C];2011年

相關(guān)博士學位論文 前2條

1 韓世昌;動力穩(wěn)定車新型穩(wěn)定裝置動力學及失效研究[D];昆明理工大學;2017年

2 嚴波;動力穩(wěn)定車作業(yè)過程的動力學特性研究[D];昆明理工大學;2017年

相關(guān)碩士學位論文 前5條

1 王軍;動力穩(wěn)定車穩(wěn)定裝置參數(shù)優(yōu)化及剛?cè)狁詈戏治鯷D];昆明理工大學;2016年

2 謝耿昌;軌道動力穩(wěn)定車主車架結(jié)構(gòu)疲勞強度研究[D];西南交通大學;2014年

3 鄧強國;動力穩(wěn)定車轉(zhuǎn)向架中心銷接觸動力學研究[D];昆明理工大學;2010年

4 劉光偉;基于典型工況下某動力穩(wěn)定車轉(zhuǎn)向架動力學特性研究[D];昆明理工大學;2011年

5 劉永建;WD320型動力穩(wěn)定車電氣控制系統(tǒng)改進的研究[D];山東大學;2007年

，

本文編號：1917095