摘要
目的通过正交试验和有限元法得到一组强度和稳定性最优的木支撑结构。方法以某胶合板木支撑结构为研究对象,采用3D建模软件IronCAD建立木支撑结构模型,利用正交试验的方法设计L9(34)的正交试验表。在此基础上,借用有限元软件Ansys Workbench对正交试验确定的方案进行静力学分析,将仿真结果归纳整理并进行极差分析和综合平衡,得出影响木支撑结构性能的主次因素,确定最优的试验方案。结果通过极差分析,得到了影响木支撑结构性能的主次因素,由主到次依次为两侧加强板距离中心的距离、开槽圆弧的圆心距离中间板上端的距离、加强板的长宽比,继而通过综合平衡法确定了最优设计方案参数(即开槽圆弧的圆心距离支撑板上端65 mm,两侧加强板距离中心的距离为280 mm,加强板的长宽比为2.5∶2)。经过与原方案对比,最大应力值降低了16%,一阶模态的频率提高了58.2%,最大变形量降低了0.9%。结论采用正交试验法和有限元法寻找木支撑结构的最优化设计是可行的,将结果应用到木支撑结构设计中,可以满足要求,并能得到合理的开槽深度和两侧加强板合理的排布位置。
The paper aims to obtain a group of wood supporting structures with optimal strength and stability through orthogonal test and finite element method.A certain plywood wood support was taken as the research object,the 3D modeling software IronCAD was adopted to establish a wood support model,and an orthogonal test table of L9(34)was designed with the orthogonal test method.On this basis,the finite element software Ansys Workbench was used to carry out statics analysis on the program determined by orthogonal test.The simulation results were summarized and sorted out,range analysis and comprehensive balance were carried out to get the primary and secondary factors affecting the performance of the wooden support structure,and the optimal test program was determined.Through the range analysis,the primary and secondary factors affecting the performance of the wooden support structure were obtained.They were the distance from the center to stiffeners on both sides the distance from the center of the slotted arc to the intermediate plate end,and the aspect ratio of the stiffener from the main to the secondary.Then,the optimal design parameters were determined by the comprehensive balance method(the center of the slotted arc was 65 mm from the upper end of the support,the distance between the two sides of the stiffener was 280 mm from the center,and the aspect ratio of the stiffener was 2.5∶2).Compared with the initial scheme,the maximum stress value was reduced by 16%,the frequency of the first-order mode was increased by 58.2%,and the maximum deformation was reduced by 0.9%.It is feasible to find the optimal design of the wooden support through the orthogonal test method and the finite element method.Application of the results to the wooden support design can meet the requirements and obtain a reasonable groove depth and a reasonable arrangement position of the reinforcing plates on both sides.
作者
李志强
樊博
张素风
LI Zhi-qiang;FAN Bo;ZHANG Su-feng(Shaanxi Provincial Key Laboratory of Papermaking Technology and Special Paper Development,Shaanxi University of Science&Technology,Xi'an 710021,China;Key Laboratory of Paper Based Functional Materials of China Nation Light Industry,Shaanxi University of Science&Technology,Xi'an 710021,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science&Technology,Xi'an 710021,China)
出处
《包装工程》
CAS
北大核心
2019年第19期109-114,共6页
Packaging Engineering
关键词
木支撑
正交试验
有限元
wood support
orthogonal test
finite element
