發(fā)布時間：2018-07-05 19:09

  本文選題：盤式制動器 + 有限元分析��； 參考：《聊城大學》2017年碩士論文

【摘要】：隨著現(xiàn)代物流業(yè)的高速發(fā)展,重型汽車的市場份額比重越來越大。在制動系統(tǒng)中,盤式制動器因其結(jié)構緊湊、熱穩(wěn)定性和水穩(wěn)定性好等優(yōu)點正在逐步代替鼓式制動器,被廣泛應用于汽車上。步入二十一世紀以來,世界各國環(huán)境狀況日益惡化、石油資源消耗過度,汽車數(shù)量的增多不僅耗費石油資源而且污染環(huán)境,因此對節(jié)能減排技術的研發(fā)成為各大汽車廠商研究的重中之重。汽車的輕量化設計不僅可以減輕汽車重量降低汽車生產(chǎn)成本,還對節(jié)能減排具有重要意義。盤式制動器作為重型汽車的制動裝置,其重量相對較大,因此對其進行輕量化設計存在很大的必要性。本文以中國某款重型汽車盤式制動器為研究對象,通過分析其結(jié)構和關鍵零部件確定了本課題研究的零部件。利用CAD軟件UG建立了盤式制動器的三維幾何模型,建立的幾何模型中含有制動盤、鉗體殼、制動塊、制動塊背板和托架。將本課題研究的鉗體殼和托架的幾何模型分別導入到CAE軟件HyperMesh中,建立了有限元模型并進行了仿真分析和模態(tài)分析,根據(jù)仿真分析結(jié)果和模態(tài)分析結(jié)果可以看出鉗體殼和托架存在很大優(yōu)化空間。然后基于OptiStruct模塊對鉗體殼和托架進行了拓撲優(yōu)化。最后通過UG軟件重新建立了優(yōu)化后的幾何模型,導入到Hyper Mesh軟件中建立了有限元模型,并進行了仿真分析和模態(tài)分析。根據(jù)計算出的優(yōu)化鉗體殼和托架的位移云圖和應力云圖可知,優(yōu)化后的模型在強度達到了性能要求,根據(jù)模態(tài)分析對模型前10階振型的頻率值分析可知優(yōu)化后的模型結(jié)構更加符合要求。將優(yōu)化后的盤式制動器與原盤式制動器進行對比,其優(yōu)化后在滿足性能要求的同時,總質(zhì)量得到了一定幅度的降低,實現(xiàn)了輕量化設計的目標。本文的研究方法為今后汽車輕量化設計的研究提供了一種方法。
[Abstract]:With the rapid development of modern logistics industry, the market share of heavy-duty vehicles is increasing. In braking system, disc brake is gradually replacing drum brake because of its compact structure, good thermal stability and good water stability, so it is widely used in automobile. Since the 21 century, the environmental situation of the world has been deteriorating day by day, the oil resource is consumed excessively, the number of automobile is increasing not only consume the oil resource but also pollute the environment. Therefore, the research and development of energy-saving and emission-reduction technology has become the most important research for major automobile manufacturers. The lightweight design of automobile can not only reduce the vehicle weight and reduce the production cost, but also play an important role in energy saving and emission reduction. As the brake device of heavy duty vehicle, disc brake has relatively large weight, so it is necessary to carry out lightweight design. In this paper, a heavy truck disc brake in China is taken as the research object. By analyzing its structure and key parts, the parts studied in this paper are determined. The 3D geometric model of disc brake is established by using CAD software UG. The geometric model is composed of brake disc, clamping shell, brake block backboard and bracket. The geometric models of clamping shell and bracket are introduced into the CAE software HyperMesh respectively. The finite element model is established and the simulation and modal analysis are carried out. According to the results of simulation and modal analysis, it can be seen that there is great space for optimization of clamping shell and bracket. Then, based on OptiStruct module, topology optimization of clamping shell and bracket is carried out. Finally, the optimized geometry model is re-established by UG software, and the finite element model is built into Hyper mesh software, and the simulation and modal analysis are carried out. According to the calculated displacement cloud diagram and stress cloud diagram of the clamped shell and bracket, the optimized model meets the performance requirements in strength. According to the modal analysis of the frequency value of the first 10 modes of the model, it can be seen that the optimized model structure is more suitable to the requirements. The optimized disc brake is compared with the original disc brake. After the optimization, the total quality is reduced to a certain extent and the lightweight design goal is realized. The research method in this paper provides a method for the future research of automobile lightweight design.
【學位授予單位】：聊城大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U463.512

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本文編號：2101428