建立一种可用于分析散体道床结构的DEM-MFBD跨尺度耦合模型.(3)通过试验和仿真标定了道砟颗粒间的接触参数,同时开展了相关试验研究,基于试验和仿真的数据对比,验证了耦合模型的正确性和准确性.通过DEM-MFBD耦合模型分析了列车循环载荷作用下轨枕垫对道床细观力学特性的影响,结果表明:(1)弹性轨枕垫受力变形,增大了轨枕...
et al. Three-dimensional MFBD-DEM coupling simulation of flexible wire mesh wheel–soil over lunar rough terrain. Comp. Part. Mech. (2024). https://doi.org/10.1007/s40571-024-00781-4 Download citation Received18 May 2023 Revised20 May 2024 Accepted23 May 2024 Published13 June 2024 DOIhttps...
RecurDyn+E..视频来自:百度贴吧基于MFBD+DEM四履带车辆动力学分析履带疲劳寿命分析履带- 砂石模型磨损研究刚柔耦合可以随时交流
疲劳寿命根据环模成型机的实际攫取工况,考虑环模与压辊和物料间存在大量接触和碰撞的非线性力学行为,采用FFlex法建立柔性体动力学模型;建立环模成型机的DEM-MFBD双向耦合的模拟仿真模型,使结果更加接近实际情况.采用正交试验,分析环模转速,模辊间隙,颗粒粒径对颗粒所受压力的影响.结果表明:各因素对试验指标的影响按大小...
The DEM-MFBD bidirectional coupling simulation model of the ring die forming machine was established, which can make the results closer to the actual situation. Using orthogonal test, the particles pressure with the three factors of ring die speed, die roll gap and...
The granules in the 4-DOF Flip-Flow Screen were modeled using the discrete element method. The screening process of the 4-DOF Flip-Flow Screen was simulated by multi-flexible body dynamics-discrete element method (MFBD-DEM) coupling. The impact of vibration frequency and amplitude on the ...
农业机械触土部件离散元法多柔体动力学井窖制作机非线性有限元柔性体建模法针对作业过程中农机触土部件出现断裂且实测载荷谱困难的问题,在额定工况下,对农机触土部件的疲劳强度进行了研究,提出了基于离散元法与多柔体动力学双向耦合的疲劳分析方法.以井窖制作机为例,采用非线性有限元柔性体建模法构建了其成穴钻头总成...
Meanwhile, the results of the DEM-MFBD coupling simulation were not significantly different from the test results of the field experiments (P > 0.05), indicating that it could be used as an efficient and accurate new method to study the dynamic characteristics between the soil and machinery....