摘要
针对某机型覆盖件的造型复杂、厚度薄及其在运输过程中易发生大变形的问题,设计了一种专用运输夹具来减小变形。同时,运输为单次长距离运输。为验证方案的可靠性和安全性,但受限于数据不全面且成本高的条件,因此,在兼顾成本和可靠性的基础上,采用有限元仿真对设计方案进行评估。仿真结果显示:在预应力作用下,总变形为0.12 mm,等效应力为17.78 MPa,满足设计要求;随机振动结果显示:在3个方向的变形量分别为2.48 mm、0.49 mm、1.06 mm,最大变形率为0.28%,满足预定设计最大变形不超过0.5%的要求。研究验证了运输方案的可靠性和安全性,也为薄壁零件特别是包含工艺孔的薄壁零件的运输提供了参考。
A specialized transportation fixture has been designed to reduce the deformation caused by the complex shape and thin thickness of the covering parts of a certain model,which are prone to significant deformation during transportation.At the same time,the transportation is a single long-distance transportation.In order to verify the reliability and safety of the scheme,but limited by incomplete date and high cost conditions,so the finite element simulation is used to evaluate the design scheme on the basis of taking into account cost and reliability.The simulation results show that under the action of prestress,the total deformation is 0.12 mm,and the equivalent stress is17.78 MPa,which meets the design requirements.The results of random vibration show that the deformation in three directions is 2.48 mm,0.49 mm and 1.06 mm respectively.The maximum deformation rate is 0.28 %,which meets the requirement that the maximum deformation of the predetermined design does not exceed 0.5 %.The research verifies the reliability and safety of the transportation scheme,and also provides a reference for the transportation of thin-walled parts,especially thin-walled parts containing process holes.
作者
孙力
唐俊杰
SUN Li;TANG Junjie(Xihua University,Chengdu,Sichuan Province,610039 China)
出处
《科技资讯》
2025年第2期125-128,172,共5页
Science & Technology Information
关键词
薄壁覆盖件
运输夹具
随机振动
强度分析
Thin-walled covering parts
Transport fixture
Random vibration
Intensity analysis
