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某型飞机腹板裂纹分析及改装设计

龙小辉

某型飞机腹板裂纹分析及改装设计
龙小辉
(中国民航飞行学院 飞机修理厂,四川 广汉 618307)
摘 要:针对某型飞机腹板裂纹问题,经对腹板进行载荷分析后,在 ANSYS 软件中建立了有限元模型。利用有限元分
析结果,对腹板裂纹失效过程进行了分析, 并将分析结果与裂纹的实际状况进行对比,论证了有限元模型的正确性。
根据腹板有限元分析结果, 提出了改装设计方案,对改装后的腹板进行了有限元分析。 通过腹板改装前后的强度变
 化对比,分析了改装设计方案的可行性。 实际改装运行情况表明, 改装设计方案可行、有效。              
关键词:改装设计;有限元分析;裂纹;疲劳强度
中图分类号:TH123+.3 ;V215.2 文献标志码:文章编号:1007-4414(2018)01-0074-04

Analysis and Modification Design for a Certain Type of Aircraft Web

LONG Xiao-hui

(Aircraft Repair & Overhaul Plant, Civil Aviation Flight University of China, Guanghan Sichuan 618307, China)

Abstract: To deal with the crack on a certain type of aircraft’s web, a finite element model is established in the ANSYS software based on load analysis of the web. Using the finite element analysis results, the failure process of web cracks is analyzed, and the results are compared with the actual situation of cracks to demonstrate the correctness of finite element models. Based on the results of the finite element analysis of the web, the modified design scheme is put forward, and the finite element analysis of the modified web is carried out. Through the contrast of the web strength changes between un-modification and modification, the feasibility of the modified design is analyzed. The actual operation of web modification shows that the modified design scheme is feasible and effective.

Key words: modification design; finite element analysis; crack; fatigue strength

分类:研究与试验

收稿日期:2018-01-08

基金项目:

作者简介:龙小辉(1974-),男,四川三台人,工程师、硕士,研究方向:航空器维修。

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