【作者】 沈永雷；

【导师】 李旭英；

【作者基本信息】 内蒙古农业大学 ， 机械设计及理论， 2008， 硕士

【摘要】 为了进一步研究各因素对秸秆压块成型和压块机性能参数的影响,为压块机的设计提供基础数据,本研究以9YK-0.4D型秸秆压块机为试验设备进行了压块试验研究。首先对秸秆的含水率和环模转速进行单因素试验,分别得到玉米秸秆含水率和环模转速的合适取值范围,然后分别选择含水率、环模与压辊间隙、环模转速进行多因素正交试验研究,通过对正交试验结果的直观分析和方差分析,揭示了影响生产率的主要因素为玉米秸秆的含水率,影响功耗的主要因素为环模转速,并获得了各评价指标的最优组合,并且通过试验数据的部分正交多项式回归分析,获得了生产率指标与各影响因素之间的非线性关系式,为秸秆压块机的设计与工艺参数优化提供了理论依据。此后基于UG对压块机进行了整机的建模,以多因素研究结果为依据,基于ANSYS对压块机主轴工作的可靠性进行了有限元分析验证,并对喂入装置开发了基于APDL的参数化有限元专用分析程序。该程序利用ANSYS的命令流功能与APDL的参数化编程功能,创建了喂入装置的参数化分析程序和程序操作界面,实现了喂入装置的等距螺旋机构与变螺距螺旋机构的参数化建模、参数化有限元边界定义、参数化有限元分析以及参数化后处理显示等功能。此开发结合了ANSYS的人机交互方式与命令流输入方式的优点,方便了三维模型与分析模型的更改,为提高压块机整机的设计水平与设计效率奠定了基础。更多还原

【Abstract】 For the sake of raising productivity、decreasing energy consumption and enhancing the design level of cuber, the multi-factor compress experiments of cornstalk were carried out based on 9YK-0.4D cuber and the finite element analysis model was established on feed components based on ANSYS and APDL. Firstly, the moisture content and compress speed were studied individually in case of the other factors unchanged, in which the suitable moisture content and the propositional compress speed were achieved. According to the above conclusion, the orthogonal polynomial regression design was adopt and orthogonal experiment was carried out on influencing factors, including moisture content、compress speed and compress clearance. After that, experimental data was disposed by variance analysis of factors, the result of variance analysis shows that moisture content effects the productivity very evidently, and the main influencing element of energy consumption is compress speed. And then the regression equation about productivity was accepted based on analysis method of polynomial regression. Finally, using the modeling function of UG the Cuber’s 3D entity design was achieved, and based on the conclusion of the multi-factor compress experiments the Modal analysis and shearing strength analysis were carried out to the cuber’s shaft model, which was achieved by the interface of IGES between UG and ANSYS. And then utilizing ANSYS command stream and APDL (ANSYS Parametric Design Language) language the parametric finite element analysis modeling of feed component was established. It included the realization of toolbars、dialog box、parametric entity modeling and parametric analysis. The modal analysis was carried out to the feed component based on this program, and the conclusions of analysis were showed automatically. The result shows that this method improving the efficiency and level of cuber design, which overcomes many repeated work.更多还原