基于FEM的鲶鱼去头加工装置运动参数优化试验

Study on optimization of motion parameters of catfish headless processing device based on FEM

目的:提高中国淡水鱼加工业前处理过程的机械化与自动化水平。方法:利用数值分析软件ANSYS/LS-DYNA构建鲶鱼去头切割仿真模型,采用有限单元法(FEM)对鲶鱼去头过程进行仿真分析及运动参数优化,以最小切割功耗为优化目标调整刀片转速及输送速度两项运动参数,并通过样机试验验证仿真结果的准确性。结果:当刀片转速为850 r/min、输送速度为14 cm/s时鱼头切割断面平整且光滑,断面感官较好,去头加工效率也能得以保证。结论:建立的圆盘刀切割鱼头仿真模型虽可以对运动过程进行一定的描述,但精度有待提升。

Objective:Improve the mechanization and automation of the pretreatment process of China’s freshwater fish processing industry.Methods:The catfish head cutting simulation model is constructed by the numerical analysis software ANSYS/LS-DYNA,and the catfish head removal process is simulated and analyzed and the motion parameters are optimized by FEM.The blade speed and transportation speed are adjusted with the minimum cutting power consumption as the optimization goal,and the accuracy of the simulation results is verified by the prototype test.Results:When the speed of the blade is 850 r/min and the conveying speed is 14 cm/s,the cutting section of the fish head is smooth and smooth,the sensory of the section is good,and the cutting efficiency of the head can be guaranteed.Conclusion:The established simulation model of disc cutter cutting fish head can describe the motion process,but the accuracy needs to be improved.