本文關(guān)鍵詞： 籠車 可靠性 剛?cè)狁詈?有限元 輕量化　出處：《湖南工業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：裝有條煙的籠車在配送過(guò)程中,由于運(yùn)輸環(huán)境中的沖擊與振動(dòng)可能會(huì)導(dǎo)致籠車在結(jié)構(gòu)或功能方面的損壞,在籠車與車廂底板之間鋪墊緩沖物是防止籠車因遭受路面激勵(lì)作用而破損的主要抑振方法。目前,在緩沖包裝動(dòng)力學(xué)的研究中對(duì)減振關(guān)注較多,而對(duì)運(yùn)輸過(guò)程中的路面、車輛等其他復(fù)雜因素考慮較少。因此,本研究從系統(tǒng)角度綜合考慮,建立了包含路面、籠車與緩沖物、汽車的整車運(yùn)輸系統(tǒng),并對(duì)籠車可靠性進(jìn)行了研究。首先,根據(jù)路面激勵(lì)的分為隨機(jī)路面激勵(lì)和脈沖路面激勵(lì)進(jìn)行建模。采用正弦疊加法生成路面不平度模型,基于ADAMS軟件中3D虛擬路面的建模原理,建立了用于運(yùn)輸平順性仿真的3D隨機(jī)虛擬路面,通過(guò)路面不平度的功率譜驗(yàn)證路面模型建立的合理性。其次,在對(duì)汽車運(yùn)輸系統(tǒng)進(jìn)行建模時(shí),一般都將其簡(jiǎn)化為彈簧阻尼系統(tǒng)模型,忽略了其復(fù)雜性,不能精確的模擬實(shí)際系統(tǒng)。本研究利用ADAMS軟件建立汽車模型和有限元軟件Hypermesh建立了緩沖物柔性體文件,將緩沖物柔性體與汽車和籠車進(jìn)行剛?cè)狁詈辖！８鶕?jù)汽車平順性試驗(yàn)方法對(duì)整車運(yùn)輸系統(tǒng)進(jìn)行了隨機(jī)路面和脈沖路面下的平順性仿真,通過(guò)加速度均方根評(píng)價(jià)不同車速下、不同路面等級(jí)對(duì)籠車運(yùn)輸?shù)挠绊?并討論了車速對(duì)緩沖物緩沖性能的影響。最后,利用有限元軟件Abaqus對(duì)已有籠車進(jìn)行模態(tài)和瞬態(tài)分析其可靠性,得出在保證運(yùn)輸可靠的前提下可以輕量化,再驗(yàn)證輕量化后的籠車運(yùn)輸過(guò)程可靠性�；\車的輕量化不僅減少制造成本,還能有效地降低物流配送過(guò)程的空載載荷和提高其運(yùn)輸效能,減小運(yùn)輸能耗。為優(yōu)化籠車結(jié)構(gòu),提高運(yùn)輸效率提供了設(shè)計(jì)參考依據(jù)。
[Abstract]:In the course of distribution, the impact and vibration in the transport environment may lead to structural or functional damage of the cage car. The cushioning between the cage car and the bottom of the car is the main method to prevent the cage car from being damaged by the road surface excitation. At present, more attention is paid to the vibration reduction in the study of cushion packaging dynamics, but the road surface in the transportation process. Vehicle and other complex factors are less considered. Therefore, from the system point of view, this study establishes a vehicle transportation system including road surface, cage car and buffer, automobile, and studies the reliability of cage car. According to the road surface excitation can be divided into random road excitation and pulse road excitation to model the road surface unevenness model is generated by sinusoidal superposition method based on the modeling principle of 3D virtual pavement in ADAMS software. A 3D random virtual pavement for simulation of transport ride comfort is established, and the rationality of the road model is verified by the power spectrum of road roughness. Secondly, when the vehicle transportation system is modeled, Generally, it is simplified as a spring damping system model, and its complexity is neglected, so it can not accurately simulate the actual system. In this paper, the vehicle model is built by using ADAMS software and the flexible body file of buffer is established by finite element software Hypermesh. The rigid and flexible coupling modeling of flexible body of buffer with vehicle and cage car is carried out. According to the method of vehicle ride comfort test, the ride comfort of the whole vehicle transportation system is simulated under the random road surface and the pulse road surface, and the acceleration RMS is used to evaluate the ride comfort of the vehicle under different velocities. The influence of different pavement grade on cage car transportation is discussed, and the influence of speed on buffer buffer performance is discussed. Finally, the modal and transient reliability of existing cage car is analyzed by using finite element software Abaqus. It is concluded that under the premise of ensuring reliable transportation, it can be lightened, and then verified the reliability of the transportation process of the cage car after lightweight. The lightweight of the cage car not only reduces the manufacturing cost, It can also effectively reduce the no-load load and improve the transportation efficiency of the logistics distribution process and reduce the transportation energy consumption, which provides the design reference for optimizing the cage car structure and improving the transportation efficiency.
【學(xué)位授予單位】：湖南工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TS43

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本文編號(hào)：1544022