本文選題：中央空調(diào)配管系統(tǒng)　切入點：虛擬樣機建模　出處：《合肥工業(yè)大學》2014年碩士論文

【摘要】：配管是中央空調(diào)器室外機最主要的部件之一，其設計問題是一大難點。傳統(tǒng)配管設計中，工程師一般基于經(jīng)驗設計出初始方案，然后進行樣機測試、方案整改等重復多次才能達到預期效果，成本高，效率低下。因此對中央空調(diào)室外機配管設計而言，開發(fā)一款動力學分析及優(yōu)化平臺對降低其研發(fā)成本和縮短研發(fā)周期有著重要的意義。 本文對滾動轉(zhuǎn)子式壓縮機進行了載荷特點分析，介紹了一種通過壓縮機振動測試數(shù)據(jù)反求出壓縮機簡諧激勵載荷的方法。利用ANSYS軟件對中央空調(diào)壓縮機配管系統(tǒng)建立了虛擬樣機模型，同時對系統(tǒng)進行了模態(tài)分析，獲得了系統(tǒng)的模態(tài)分析結(jié)果，在施加載荷時，由于中央空調(diào)由多個壓縮機系統(tǒng)組成，且各個壓縮機激勵的相角差在變化，，本文介紹了一種獲得配管系統(tǒng)最大應力及對應相角差的方法，同時施加該相角差下的載荷激勵進行諧響應分析，獲得了配管系統(tǒng)的應力和位移特性，并對物理樣機進行了應力測試，然后對測試結(jié)果和仿真結(jié)果進行了對比驗證。在配管優(yōu)化方面，本文對配管的U型彎位直線段方案設計、優(yōu)化設計和配重優(yōu)化等優(yōu)化方法編寫了標準APDL代碼，并對其集成到軟件平臺，供工程師調(diào)用，有效的提高管路優(yōu)化效率。 最后，基于VC++程序平臺，將配管系統(tǒng)數(shù)據(jù)提取、建模、分析和后處理等模塊進行了集成，開發(fā)出了中央空調(diào)配管動力學分析及優(yōu)化軟件平臺。該平臺的投入使用免去了ANSYS繁瑣的操作步驟，將大大提高新機型的研發(fā)效率，降低研發(fā)成本。
[Abstract]:Piping is one of the most important components of outdoor unit of central air conditioner, and its design problem is a big difficulty.In the traditional pipe design, engineers usually design the initial scheme based on experience, and then test the prototype. The plan can achieve the desired results with high cost and low efficiency.Therefore, the development of a dynamic analysis and optimization platform is of great significance to reduce the R & D cost and shorten the R & D cycle.In this paper, the load characteristics of the rolling rotor compressor are analyzed, and a method of calculating the simple harmonic excitation load of the compressor through the vibration test data of the compressor is introduced.The virtual prototype model of central air-conditioning compressor piping system is established by using ANSYS software, and the modal analysis of the system is carried out, and the results of modal analysis are obtained. When the load is applied, the central air conditioning system is composed of several compressor systems.And the phase angle difference of the compressor excitation is changing. This paper introduces a method to obtain the maximum stress and the corresponding phase angle difference of the piping system. At the same time, the harmonic response analysis is carried out by applying the load excitation under the phase angle difference.The stress and displacement characteristics of the pipe distribution system are obtained, and the stress of the physical prototype is tested, and the test results are compared with the simulation results.In the aspect of pipe distribution optimization, the standard APDL code is compiled for the design of straight line section of U-shaped bend position, optimization design and weight optimization, and integrated into the software platform for engineers to call.Effectively improve the efficiency of pipeline optimization.Finally, based on VC program platform, the modules of data extraction, modeling, analysis and post-processing are integrated, and a software platform for dynamic analysis and optimization of central air conditioning piping is developed.The input and use of the platform eliminates the tedious operation steps of ANSYS and will greatly improve the efficiency and reduce the R & D cost of the new model.
【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TB657.2

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