基于RecurDyn的输送机动态特性研究及优化

发布时间：2018-04-18 01:31

本文选题：RecurDyn + 参数化建模　；参考：《上海师范大学》2015年硕士论文

【摘要】：带式输送机作为散装物料输送的理想设备,已经被广泛应用在多个领域,对输送机的动力学分析也显得尤为重要。在输送机系统中,数量最多的构件是托辊,托辊质量占整机重量的30%以上。本文首先通过对输送机设计和建模方法的研究,选择Recur Dyn软件作为建模分析软件,利用Belt工具包创建带式输送机虚拟样机,通过软件仿真分析输送机启动过程的动态特性,并将仿真值与理论计算值相比较,验证模型的准确性。然后,本文提出了一种基于Recur Dyn的输送机参数化建模方法,以创建参数化值和参数化点的方式实现承载段托辊间距的参数化建模,保证虚拟样机模型能够随参数化值的变化而自动更新。最后,本文基于参数化模型,利用Auto Design模块提出一种输送机托辊间距优化的方法,以承载段托辊间距为设计变量,选择输送带波动和输送机功率为优化的综合性能指标,分别以最小的输送机功率和最小的带波动为设计目标进行优化,寻求符合设计要求的承载段托辊间距最佳值。最终,综合两次的优化结果进行整理分析,选择合适的托辊间距,实现最优化的输送机消耗功率、平稳的带波动。在一般输送机设计过程中,托辊间距的选取都是依据经验值。托辊间距越小,越有利于提高输送机的动态特性,但同时会增加托辊数量,增加输送机安装费用,降低系统的经济性。因此,合理设计托辊间距,不仅能够保证输送机稳定合理运行,而且能降低能耗,提高输送机的经济性。针对此,本文以输送机参数化建模为基础,首次提出一种基于Recur Dyn的输送机承载段托辊间距优化方法。经过优化仿真分析,得出承载段托辊间距为1.3m时能实现最小的输送机消耗功率,达到平均最平稳的带波动。本文提出的输送机托辊间距的优化方法,为以后大型输送机托辊布置提供了一种可靠的设计依据。在今后的设计研究中,可以改变其中的设计参数、目标函数、约束条件,实现其他优化目标。
[Abstract]:Belt conveyor, as an ideal equipment for bulk material transportation, has been widely used in many fields, and the dynamic analysis of conveyor is particularly important.In the conveyor system, the largest number of components is the roller, the mass of the roller accounted for more than 30% of the weight of the machine.Firstly, through the research of the design and modeling method of the conveyor, Recur Dyn software is selected as the modeling and analysis software. The virtual prototype of belt conveyor is created by using the Belt toolkit, and the dynamic characteristics of the starting process of the conveyor are analyzed through the software simulation.The accuracy of the model is verified by comparing the simulation value with the theoretical calculation value.Then, a parameterized modeling method of conveyer based on Recur Dyn is proposed in this paper. The parameterized modeling of roller spacing in bearing section is realized by creating parameterized values and parameterized points.Ensure that the virtual prototype model can be automatically updated with the change of parameterized values.Finally, based on the parameterized model and using Auto Design module, this paper presents a method to optimize the roller spacing of conveyors. Taking the distance between rollers in the bearing section as the design variable, the fluctuation of the conveyor belt and the power of the conveyor are selected as the comprehensive performance indexes of the optimization.The minimum power of conveyer and the minimum fluctuation of belt are respectively taken as the design objective to optimize the optimum value of the distance between the rollers of the bearing section in accordance with the design requirements.Finally, the optimization results of two times are synthesized and analyzed, and the proper distance between the rollers is selected to realize the optimal power consumption of the conveyer and the stable fluctuation of the belt.In general conveyor design process, the choice of roller spacing is based on empirical values.The smaller the distance between rollers is, the better the dynamic characteristics of conveyors are, but at the same time the number of rollers will be increased, the installation cost of conveyors will be increased, and the economy of the system will be reduced.Therefore, the reasonable design of roller spacing can not only ensure the stable and reasonable operation of the conveyor, but also reduce energy consumption and improve the economy of the conveyor.In this paper, based on the parametric modeling of conveyors, a new method based on Recur Dyn is proposed to optimize the distance between the rollers in the bearing section of the conveyer for the first time.Through optimization simulation and analysis, it is concluded that the minimum power consumption of conveyer can be achieved when the distance between the rollers of bearing section is 1.3m, and the average and most stable band fluctuation can be achieved.The method of optimizing the distance between the rollers of the conveyer is presented in this paper, which provides a reliable design basis for the arrangement of the rollers of the large conveyors in the future.In the future design research, the design parameters, objective functions, constraints can be changed and other optimization objectives can be realized.
【学位授予单位】：上海师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD528.1

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