传动链板力学性能分析及优化

Mechanical Properties Analysis and Optimization of Drive Chain Plate

该文对孔板格栅传动链板的力学性能进行研究,基于不锈钢304材料力学参数的测试结果,建立了传动链板受力工况的非线性有限元模型,通过数值仿真计算,确定了应力分布及应力集中最危险截面,并得到了位移载荷-最大Mises应力关系曲线,该曲线表明:当304材质链板受拉变形量大于2 mm时,局部将发生屈服失效;通过对304材质链板进行拉伸试验,获得了载荷-变形量关系曲线,进一步验证了仿真计算结果的可行性;针对201、1Cr13材质链板进行拉伸试验,通过与304材质链板对比,表明:201材质链板的屈服极限提高了145.4%、最大承载能力提高了42.3%;该研究为传动链板设计优化提供了理论依据,并对孔板格栅承载能力设计具有一定指导意义。

The mechanical properties of the drive chain plate of orifice-plate screen are researched in this paper;based on the test data of mechanical property parameters of stainless steel 304,the nonlinear finite element model of the drive chain plate in force condition is established.Through the numerical simulation calculation,the most dangerous section of stress concentration and stress distribution is determined,and the relationship curve of displacement load-maximum Mises stress is obtained,the curve shows that when the tensile deformation of 304 chain plate is greater than 2 mm,local yield failure will occur.Through tensile tests on the 304 chain plate,the load-deformation relationship curve is obtained,and feasibility of the simulation results is further verified.Tensile tests on the chain plates of material 201 and 1Cr13 are carried out,then compared with the 304 chain plate,the result shows that the yield limit of 201 chain plate is increased by 145.4%,and the maximum bearing capacity is increased by 42.3%.This research provides a theoretical basis for optimization design of the drive chain plate,and it has certain guiding signification for bearing capacity design of the orifice-plate screen.