基于正交试验的枕型空气衬垫优选方法

目的 基于正交试验的方法,探究枕型空气衬垫的规格、初始充气压强、温度、压缩速率在准静态压缩试验下对其缓冲性能影响的主次关系,得到一组使衬垫缓冲性能优良稳定的试验变量和一种枕型空气衬垫的优选方法.方法 采用正交试验的方法设计L9=(34)的正交试验,以枕型空气衬垫为研究对象进行准静态压缩试验,将试验结果归纳整理并进行极差分析和综合优选,判断所研究因素对枕型空气衬垫缓冲性能影响的主次关系,综合优选缓冲性能最优的枕型空气衬垫.结果 通过极差分析,得到了影响枕型空气衬垫缓冲性能的主次因素,由主到次依次为枕型空气衬垫规格、初始充气压强、温度、压缩速率,继而结合试验的易操作性综合优选了枕型空气衬垫的规格为100 mm×150 mm,初始充气压强为5 kPa,温度为30℃,压缩速率为100 mm/min,确定了一组使衬垫缓冲性能优良稳定的试验因素.结论 采用正交试验方法综合优选缓冲性能最优的枕型空气衬垫这一方法是可行的,结果也明确了4个试验变量对枕型空气衬垫缓冲性能影响的主次关系,这种思路能够为后续类似缓冲包装试验研究设计提供参考.

Optimization Method of Pillow-Shaped Air Cushion Based on Orthogonal Test

Aiming at a new type of air transport box, this paper studies the influence of the height and angle of convex edge in the coupled concave convex edge structure on the maximum deformation of the box when the box drops. Modal analysis and random vibration analysis of the box are carried out to explore the influence of concave convex edge design in air transportation. Using CATIA to establish the solid three-dimensional model of air transport box design. Referring to the height of the cargo door of various types of aircraft, the finite element software Ansys is used to analyze the falling from the cargo door in the process of handling, and the modal analysis of the transport box is carried out. The maximum deformation and equivalent stress of the random vibration in the process of air transportation are explored. The maximum total deformation and equivalent stress of the box are studied under seven drop conditions, including three kinds of surface drop, three kinds of edge drop and one angle drop. The interpolation surface is established by Matlab software to find the optimal design. In all design schemes, the maximum equivalent stress of the box will not cause material damage. When the height of the convex edge is 20 mm and the angle of the convex edge is 0°, the average maximum total deformation of the box is the minimum. It is determined that the existence of concave convex edge reduces the maximum deformation of the box body, this air transport box will not produce large deformation during air transport, and the maximum deformation is smaller than that of the box without convex edges, which can be put into subsequent manufacturing and use as the optimal design.