集成参数化有限元与响应面的矿用螺旋输送机带式螺旋轴轻量化设计  

Lightweight design of mining screw conveyor's belt screw shaft integrating parameterized finite element and response surface model

作　　者：曹阳 梁根 李晓科 张彦超 马军 CAO Yang;LIANG Gen;LI Xiaoke;ZHANG Yanchao;MA Jun(College of Mechanical and Electrical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002)

机构地区：[1]郑州轻工业大学机电工程学院,河南郑州450002

出　　处：《机械设计》2024年第3期99-105,共7页Journal of Machine Design

基　　金：国家自然科学基金项目(51905492);河南省科技攻关项目(232102220099);河南省高等学校青年骨干教师培养计划项目(2021GGJS090)。

摘　　要：针对工程机械优化目标函数隐性化和求解效率低的问题,文中提出了一种集成参数化有限元与响应面的优化设计方法,并以矿用螺旋输送机带式螺旋轴轻量化设计为例,说明了该方法的思路与实现过程。为提高有限元建模效率,开发了基于APDL的带式螺旋轴参数化有限元模型,实现了不同尺寸带式螺旋轴的快速有限元分析。通过析因试验筛选出对带式螺旋轴受力分布和疲劳寿命影响显著的设计变量,并以结构强度和疲劳寿命为约束建立带式螺旋轴轻量化设计模型。采用优化的拉丁超立方采样并结合有限元仿真结果建立响应面模型,来拟合设计变量与目标函数之间的隐式关系,最后通过Minitab响应优化器进行寻优求解,实现带式螺旋轴减重15.4%。求解及验证结果表明:所提出的方法不仅轻量化效果明显,而且可以在保证计算精度前提下缩短设计周期,提高整体优化效率。Since machinery optimization suffers from the implicit objective function and the low efficiency in the solutions,in this article,a method of optimization design is proposed,which integrates both the parameterized finite element and the response surface model(RSM).The mine screw conveyor's belt screw shaft is subject to the lightweight design,which is taken for in-stance to explore how to apply this method.In order to improve the efficiency in the finite-element modelling process,the APDL is used to set up the parametric finite-element model of the belt screw shaft,so as to complete the rapid FEA of the belt screw shaft with different dimensions.The design factors that significantly affect the belt screw shaft's stress distribution and fatigue life are selected by means of the factorial test,and the model of lightweight design is set up with both the structural strength and the fatigue life as the constraints.The RSM based on the optimized Latin hypercube sampling combined with the FE simulation results is used to identify the implicit relationship between the design factors and the objective function,and the Minitab response optimi-zer is applied to work out the optimum solution;as a result,the belt screw shaft's weight reduces by 15.4%.The analytical re-sults suggest that this method is desirable in terms of weight reduction,with short design cycle and high accuracy in calculation,which has ensured a high standard of efficiency in overall optimization.

关 键 词：螺旋输送机 带式螺旋轴 参数化有限元 响应面 轻量化设计 

分 类 号：TD823[矿业工程—煤矿开采]