本文選題：輪式裝載機 + 減振降噪優(yōu)化��； 參考：《東南大學》2017年碩士論文

【摘要】：本文以輪式裝載機駕駛室為研究對象,針對駕駛室存在的振動噪聲過大、座椅舒適性差以及視野安全隱患等問題,通過噪聲源識別實驗、有限元仿真分析、坐姿人機工程舒適性分析、視野開闊性分析等,研究影響駕駛室舒適性的因素,并以此為基礎進行輪式裝載機駕駛室的造型設計。(1)設計駕駛室噪聲源識別實驗方案,獲取駕駛室重要位置的聲壓級數(shù)據(jù)和振動信號,分析該型號駕駛室振動噪聲的來源。(2)依據(jù)有限元仿真理論和模態(tài)分析理論,建立駕駛室有限元模型,進行結構模態(tài)分析,獲取結構固有頻率及對應頻率的振型;根據(jù)模態(tài)分析及實驗測試結果,對產生低頻振動噪聲的大面積鋼板和橫梁進行改進設計。應用聲學仿真軟件LMS,對駕駛室進行聲模態(tài)分析和耦合模態(tài)分析,獲得車內空腔的聲學共鳴頻率和耦合頻率,為駕駛室降噪提供參考。(3)根據(jù)人體坐姿理論和座椅設計原則,分析裝載機座椅設計參數(shù)與人體尺寸之間的關聯(lián),利用人機工程學所建立的標準化人體尺寸數(shù)據(jù)庫,實現(xiàn)以人體模型來驅動裝載機座椅的設計,保證座椅的舒適性。(4)將眼橢圓理論應用到裝載機駕駛室的視野設計中,分析駕駛員的眼橢圓參數(shù)尺寸及在駕駛室內的定位尺寸,根據(jù)人的視野特點對裝載機前方垂直視野、前方水平視野進行開闊性校核。(5)從分析駕駛室的功能出發(fā),應用人機工程學設計準則,進行人性化的造型設計。設計結果不僅滿足功能的需要,同時確保駕駛室具有適宜的噪聲環(huán)境、良好的座椅舒適性、開闊的工作視野。
[Abstract]:In this paper, the cab of wheel loader is taken as the research object. Aiming at the problems such as excessive vibration noise, poor seat comfort and hidden danger of visual field safety, the finite element simulation analysis is carried out through the noise source identification experiment. On the basis of the analysis of ergonomic comfort of sitting posture and the analysis of wide field of vision, the factors affecting the comfort of cab are studied, and based on this, the design of cab noise source identification experiment scheme of wheel loader cab is carried out, which is based on the modeling design of wheel loader cab. According to the finite element simulation theory and modal analysis theory, the finite element model of the cab is established, and the structural modal analysis is carried out, and the sound pressure level data and vibration signal of the cab are obtained, and the source of vibration and noise of the cab is analyzed. According to the modal analysis and experimental results, the large area steel plate and beam with low frequency vibration noise are improved. The acoustic modal analysis and coupling modal analysis of the cab are carried out by using the acoustic simulation software LMS. the acoustic resonance frequency and coupling frequency of the inner cavity of the vehicle are obtained, which provides a reference for reducing noise in the cab.) according to the theory of human sitting position and the principle of seat design, This paper analyzes the relationship between the design parameters of the loader seat and the human body size, and realizes the design of the loader seat driven by the human body model by using the standardized human dimension database established by ergonomics. To ensure the comfort of the seat, the eye ellipse theory is applied to the visual field design of the cab of the loader. The dimensions of the eye ellipse parameters of the driver and the positioning dimension in the cab are analyzed, and the vertical visual field in front of the loader is analyzed according to the characteristics of the human visual field. Based on the analysis of cab function, the humanized modeling design is carried out by applying ergonomics design criterion. The design results not only meet the needs of function, but also ensure that the cab has suitable noise environment, good seat comfort and wide working field.
【學位授予單位】：東南大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TH243

【參考文獻】

相關期刊論文 前10條

1 金鑫;任蕊;弓太生;;基于人機工程學的舒適性戶外背包設計[J];中國皮革;2016年07期

2 宋康;陳瀟凱;林逸;;動力總成懸置系統(tǒng)對汽車動力學性能的影響[J];汽車工程;2016年04期

3 張運銀;馬曉軍;劉春光;廖自力;;輪轂電機驅動裝甲車輛行駛穩(wěn)定性控制仿真[J];火炮發(fā)射與控制學報;2016年01期

4 李建偉;朱鵬偉;;變速器振動對汽車噪聲的影響分析[J];現(xiàn)代制造技術與裝備;2016年02期

5 賀銀芝;楊志剛;王毅剛;;某轎車車內氣動噪聲特性的試驗研究[J];汽車工程;2016年01期

6 余烽;徐中明;張志飛;;重型機動車輛車架振動特性分析[J];現(xiàn)代制造工程;2016年01期

7 陳杰;;汽車座椅的人機工程學分析[J];包裝工程;2015年22期

8 王偉;倪計民;李玉琦;金暉;;基于聲學模態(tài)的橢圓截面擴張腔聲學分析[J];汽車工程;2015年10期

9 胡越;李富才;邵威;孟立立;周吉文;;工程機械噪聲源識別技術研究進展[J];噪聲與振動控制;2015年05期

10 侯獻軍;張強;劉志恩;呂俊成;;某微型車車內振動噪聲分析及控制[J];噪聲與振動控制;2015年05期

相關碩士學位論文 前1條

1 吳凌云;輪式裝載機振動噪聲測試分析與改進[D];吉林大學;2014年

，

本文編號：1955281