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  本文關(guān)鍵詞：履帶起重機(jī)組合臂架整體穩(wěn)定性研究　出處：《大連理工大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 履帶起重機(jī) 穩(wěn)定性分析 剛度等效 簡化模型 ANSYS

【摘要】：隨著對履帶起重機(jī)設(shè)計(jì)的要求越來越精細(xì),高聳且輕柔型臂架的大量采用,使得臂架的穩(wěn)定性問題日益突出。尤其是對于組合臂架的穩(wěn)定性問題,現(xiàn)在仍然是國內(nèi)各大工程機(jī)械生產(chǎn)廠商及高校的難題。隨著計(jì)算力學(xué)的迅速發(fā)展,有限元軟件逐漸地被運(yùn)用到工程設(shè)計(jì)中,其中ANSYS是比較典型的一種,但現(xiàn)在對于履帶起重機(jī)組合臂架在ANSYS進(jìn)行穩(wěn)定性分析建模時(shí),往往非常繁瑣,而且在ANSYS中進(jìn)行臂架等效的時(shí)候,沒有考慮臂架扭轉(zhuǎn)的效應(yīng)。本文在研究履帶起重機(jī)組合臂架的力學(xué)特性的基礎(chǔ)上,系統(tǒng)地研究了組合臂架在ANSYS中的簡化問題、薄壁構(gòu)件的截面剛度等效問題、ANSYS的線性和非線性屈曲分析、ANSYS的APDL語言以及MATLAB GUI界面設(shè)計(jì)技術(shù)等,論文的主要研究工作和成果如下： (1)了解目前組合臂架在ANSYS建模和進(jìn)行穩(wěn)定性計(jì)算的問題,提出了履帶起重機(jī)組合臂架有限元模型簡化的新方法,并驗(yàn)證了該方法的可行性及合理性。 (2)研究了有限單元法的基本原理和線性屈曲分析和非線性屈曲分析的原理。 (3)根據(jù)截面剛度等效的理論和薄壁構(gòu)件的力學(xué)特性,確定了在ANSYS中的簡化單元,對臂架進(jìn)行截面剛度等效,與之前的復(fù)雜模型進(jìn)行對比,確定了簡化方式的合理性。 (4)在ANSYS中對組合臂架的簡化模型進(jìn)行線性屈曲分析和非線性屈曲分析,得出組合臂架穩(wěn)定性影響因素的變化規(guī)律。 (5)編寫了履帶起重機(jī)組合臂架穩(wěn)定性計(jì)算程序,該程序充分利用了ANSYS的APDL語言及MATLAB GUI界面設(shè)計(jì)技術(shù),用戶可以利用該程序?qū)Ρ奂芊�(wěn)定性問題進(jìn)行分析。
[Abstract]:With the design of the crawler crane is required more and more fine, tall and gentle type uses a lot of the boom, the stability of boom has become increasingly prominent. Especially for the stability problem of the arm, it is still a problem for the domestic engineering machinery manufacturers and universities. With the rapid development of Computational Mechanics, finite element the software has been applied to the engineering design, in which ANSYS is a typical, but now for the crawler crane boom in ANSYS stability analysis modeling, often very cumbersome, and boom equivalent in ANSYS, without considering the effect of arm twisting. Based on the study on the mechanical properties of crawler crane jib on the systematic study of the boom in ANSYS to simplify the problem, the thin-walled structural stiffness equivalent, linear and nonlinear ANSYS Buckling analysis, APDL language of ANSYS and MATLAB GUI interface design technology. The main research work and achievements of this paper are as follows:
(1) to understand the problem of ANSYS modeling and stability calculation of combined jib at present, a new method of finite element model simplification of crawler crane combined boom is put forward, and the feasibility and rationality of the method is verified.
(2) the basic principle of the finite element method and the principle of linear buckling analysis and nonlinear buckling analysis are studied.
(3) according to the theory of equivalent section stiffness and the mechanical characteristics of thin-walled components, a simplified element in ANSYS is determined. The stiffness of the boom is equivalent to that of the previous complex model, and the rationality of the simplified method is determined.
(4) in ANSYS, the linear buckling analysis and nonlinear buckling analysis are carried out for the simplified model of the combined arm frame, and the variation of the influence factors of the stability of the combined arm frame is obtained.
(5) compiling the stability calculation program of crawler cranes combined boom. This program makes full use of ANSYS's APDL language and MATLAB GUI interface design technology. Users can use this program to analyze the stability of boom.

【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH213.7

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前2條

1 黃魏;履帶起重機(jī)臂架扭轉(zhuǎn)對結(jié)構(gòu)穩(wěn)定性的影響研究[D];大連理工大學(xué);2013年

2 孫財(cái)東;履帶起重機(jī)起臂過程力學(xué)分析與優(yōu)化[D];大連理工大學(xué);2013年

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本文編號：1370848