Transactions of Materials and Heat Treatment

Title：Life analysis on biomass forming mold based on discrete element and finite element coupling

Authors： Li Zhen Li Jinda Sha Qianyi Yu Yue Yu Jin Gao Yaodong

Unit： Inner Mongolia University of Science and Technology

KeyWords： ring molding machine fatigue life salix twig granules discrete element finite element

ClassificationCode：TK6

year,vol(issue):pagenumber：2022,47(8):171-177

Abstract：

Taking the salix twig granules as the production raw material, the ring molding machine was analyzed comprehensively, and according to the actual material grabbing situation of the ring molding machine, the dynamic simulation model and material discrete element model of the ring molding machine were established. Then, the grasping process of salix twig granules was DEM-MBD joint simulated by ADAMS and EDEM, which solved the problem that the pressure roller could not rely on friction to rotate by the single software EDEM simulation so that the simulation results were closer to the actual situation, and the simulation results were analyzed. The results show that the maximum pressure on the granules increases with the increasing of rotate speed for ring mold when the rotate speed of ring mold is 3-5 r·s-1, and when the rotate speed of ring mold increases to 5 r·s-1, the maximum pressure on the granules decreases with the increasing of rotate speed of ring mold. Furthermore, the stress and deformation of the ring molding machine were analyzed by coupling between discrete element and finite element. The results show that the maximum deformation amount of ring mold and pressure roller is 0.550760 and 0.42516 mm respectively, and the maximum equivalent stress is 79.0710 and 32.6810 MPa respectively, which all occur at the minimum gap between ring mold and preessure roller. The fatigue life nephograms of ring mold and pressure roller were analyzed by fatigue analysis software Ncode Designlife. The results show that the ring mold is more prone to fatigue damage than the pressure roller.

Funds：

内蒙古自治区自然科学基金资助项目（2020LH05020）；国家自然科学基金资助项目（51666016）

作者简介：李震（1973-），男，博士，教授，E-mail：lizhen_730106@126.com；通信作者：李金达（1995-），男，硕士，E-mail：1005025847@qq.com

Reference：

[1]简相坤, 刘石彩.生物质固体成型燃料研究现状及发展前景[J].生物质化学工程,2013,47(2):54-58.

Jian X K,Liu S C.Research status and development prospect of densified biofuel [J]. Biomass Chemical Engineering,2013,47(2):54-58.

[2]施水娟, 武凯,蒋爱军.制粒过程中环模力学模型的建立及有限元分析[J].机械设计与制造,2011，(1):38-40.

Shi S J,Wu K,Jiang A J. Mechanical model establishment and finite element analysis of ring die in pelletizing [J]. Mechanical Design & Manufacture,2011，(1):38-40.

[3]Peter Daugbjerg Jensen, Michel Temmerman, Susanne Westborg. Internal particle size distribution of biofuel pellets[J]. Fuel,2011,90(3)：980-986.

[4]Celik H K,Yilmaz H,Rennie A E W,et al. Determination of the failure susceptibility of a flat die used in biomass pelletizing machines by means of FEA-based design exploration[J]. Journal of Failure Analysis and Prevention,2018,18(5)：1099-1110.

[5]Holm J K, Stelte W, Posselt D, et al. Optimization of a multiparameter model for biomass pelletization to investigate temperature dependence and to facilitate fast testing on pelletization behavior[J]. Energy & Fuels, 2011, 25（8）: 3706-3711.

[6]蒋清海, 武凯,孙宇,等.生物质制粒机环模的磨损机理分析[J].农业工程学报,2013,29(22):42-49.

Jiang Q H,Wu K，Sun Y,et al. Wear mechanism analysis of ring die of pellet mill [J]. Transactions of the Chinese Society of Agricultural Engineering,2013,29(22):42-49.

[7]李震, 王鹏,刘彭,等.基于流固耦合的环模成型机关键部件疲劳寿命分析[J].林业工程学报,2020,5(1):122-128.

Li Z,Wang P,Liu P,et al. Fatigue life analysis of key components of ring molding machine based on fluid-solid coupling [J]. Journal of Forestry Engineering,2020,5(1):122-128.

[8]武凯, 孙宇,彭斌彬,等.环模制粒粉体旋转挤压成型扭矩模型构建及试验[J].农业工程学报,2013,29(24):33-39.

Wu K, Sun Y, Peng B B, et al. Modeling and experiment on rotary extrusion torque in ring-die pelleting process[J]. Transactions of the Chinese Society of Agricultural Engineering,2013, 29(24): 33-39.

[9]周亮, 孙宇,武凯,等.环模式秸秆压块机模具有限元分析及锥角优化[J].农机化研究,2014,36(6):224-227，232.

Zhou L，Sun Y,Wu K,et al. Finite element analysis and cone angle optimization of ring die on circular mold briquetting machine[J]. Journal of Agricultural Mechanization Research，2014,36(6):224-227，232.

[10]武凯，施水娟，彭斌彬，等.环模制粒挤压过程力学建模及影响因素分析[J].农业工程学报，2010，26 （12）：142-147.

Wu K,Shi S J,Peng B B,et al. Modeling and analysis on extruding force in pelleting process[J]. Transactions of the Chinese Society of Agricultural Engineering，2010，26（12）：142-147.

[11]孙启新，张仁俭，董玉平. 基于ANSYS的秸秆类生物质冷成型仿真分析[J].农业机械学报，2009，40（12）：130-134.

Sun Q X,Zhang R J,Dong Y P.Simulation analysis of compressing molding under general condition for straw biomass based on ANSYS[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(12)：130-134.

[12]李永奎, 孙月铢,白雪卫.玉米秸秆粉料单模孔致密成型过程离散元模拟[J].农业工程学报,2015,31(20):212-217.

Li Y K,Sun Y Z,Bai X W. Extrusion process of corn stalk powder in single orifice die processing based on discrete element method[J]. Transactions of the Chinese Society of Agricultural Engineering,2015,31(20):212-217.

[13]李玉迪, 许宏光,荆成虎.闭式生物质热压成型传热模拟[J].哈尔滨工业大学学报,2018,50(7):30-37.

Li Y D,Xu H G,Jing C H.Simulation of heat transfer model of closed biomass thermo-compression formation[J].Journal of Harbin Institute of Technology,2018,50(7):30-37.

[14]毕秋实, 王国强,陈立军,等.基于离散元-多体动力学联合仿真的机械式挖掘机挖掘阻力仿真与试验[J].吉林大学学报：工学版,2019,49(1):106-116.

Bi Q S,Wang G Q,Chen L J，et al.Numerical simulation and experiment on excavation resistance of mechanical excavator based on DEM-MBD co-simulation[J].Journal of Jilin University：Engineering and Technology Edition,2019,49(1):106-116.

[15]姚宗路, 张妍,赵立欣,等.立式双层孔环模生物质压块机设计与试验[J].农业工程学报,2016,32(S1):8-12.

Yao Z L，Zhang Y，Zhao L X,et al. Design and experiment of biomass briquetting machine with vertical double circular mould[J]. Transactions of the Chinese Society of Agricultural Engineering, 2016, 32(S1): 8-12.

[16]薛冰. 生物质成型机环模结构参数对其寿命和成型质量影响研究[D].包头：内蒙古科技大学,2014.

Xue B.Biomass Briquetting Machine Ring Die Structure Parameters on Life and Forming Quality Impact Research[D]. Baotou：Inner Mongolia University of Science & Technology,2014.

[17]王露. 轮毂轴承多工况疲劳寿命建模与数值仿真[D].杭州：浙江工业大学,2009.

Wang L. Modeling and Numerical Simulation of Fatigue Life of Hub Bearing Based on Multi-bench Test Load[D]. Hangzhou： Zhejiang University of Technology,2009.

Service：

【This site has not yet opened Download Service】【Add Favorite】