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基于DEM-MBD耦合的装载机减阻铲装策略仿真分析
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国家自然科学基金青年基金项目(52105596;52104168)


Simulation Analysis of Drag Reduction and Shovel Loading Strategy of Loader Based on DEM-MBD Coupling
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    摘要:

    装载机铲装物料过程中,往往受到较大的铲装阻力,使得其作业效率降低、能耗升高。针对此问题,对装载机减阻铲装策略进行研究。对装载机铲装物料过程中受到的铲装阻力进行分析,建立装载机各作业阶段铲装阻力的数学模型,提出装载机减阻铲装策略;利用ADAMS建立装载机虚拟样机模型,对它进行动态仿真,通过EDEM完成铲装物料颗粒模型的建立及相关参数的设置;基于DEM-MBD联合仿真,分别对装载机使用2种铲装物料策略进行铲装过程仿真;最后,获取2种铲装策略中物料运动速度矢量以及铲装阻力变化曲线,进行对比分析。结果表明:装载机使用减阻铲装策略铲装物料相比一次铲装法铲装物料受到的最大铲装阻力值减少11.3%,且使用减阻铲装策略所产生的铲装阻力大部分时间内整体小于一次铲装法所产生的铲装阻力,证明了减阻铲装策略的可行性和合理性。

    Abstract:

    In the process of shoveling materials,loaders are often subject to large shoveling resistance,which reduces their operating efficiency and increases energy consumption.To solve the problem,the drag reduction and shovel loading strategy of loader was studied.The shoveling resistance of the loader in the process of loading materials was analyzed,the mathematical model of the shoveling resistance of the loader in each operation stage was established,and the resistance drag reduction and shovel loading strategy of the loader was proposed.The virtual prototype model of the loader was established by ADAMS,and its dynamic simulation was carried out.The particle model of the shovel material and the relevant parameters were set up by EDEM;based on the DEM-MBD joint simulation,the shovel loading process of the loader was simulated by using two shovel loading strategies.Finally,the velocity vector of material movement and the change curve of shoveling resistance in the two shovel loading strategies were obtained and compared.The results show that the maximum shoveling resistance value of the material loaded by the loader using the drag reduction and shovel loading strategy is 11.3% less than that by the one-time shoveling method,and the shoveling resistance generated by the drag reduction and shovel loading strategy is generally less than that generated by the one-time shoveling method in most of the time,which proves the feasibility and rationality of the drag reduction and shovel loading strategy.

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刘畅,黄笛,房洪超,黄登伟,王文强.基于DEM-MBD耦合的装载机减阻铲装策略仿真分析[J].机床与液压,2024,52(10):147-154.
LIU Chang, HUANG Di, FANG Hongchao, HUANG Dengwei, WANG Wenqiang. Simulation Analysis of Drag Reduction and Shovel Loading Strategy of Loader Based on DEM-MBD Coupling[J]. Machine Tool & Hydraulics,2024,52(10):147-154

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  • 在线发布日期: 2024-06-11
  • 出版日期: 2024-05-28