有限元连接方法在某无人飞行器建模中的应用

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摘 要：针对复杂飞行器在有限元建模中将不同结构连接的问题，对惯性释放计算方法进行验证；基于某无人飞行器的整机结构平台，分别采取1d单元、接触和共节点3种有限元连接方法实现对不同结构连接，比较每种方法的建模和计算效率以及计算结果。验证表明：在满足工程的要求下，1d单元连接方式效率最高。

关键词：有限元；连接方式；建模；惯性释放；飞行器

中图分类号：V279 文献标志码：B 文章编号：1671-5276（2024）04-0187-06

Application of Finite Element Connection Method of Unmanned Aerial Vehicle

LI Xin， WANG Kun， HU Qi， FENG Zhengjian， ZHANG Shanzhi

（Aerospace Times Feihong Technology Company Limited， Beijing 100094， China）

Abstract：The calculation method of inertial relief is verified to address the connecting different structures in finite element modeling of complex aircraft. Based on the complete structure platform of an unmanned aerial vehicle， three finite element connections methods of 1d element， contact and common node are adopted to connect different structures. The modeling and calculation efficiency of each method are compared， and the calculation results are verified by experiments， which conclude that the 1d element connection method is the most efficient connection method in line with the requirements of engineering.

Keywords：finite element; connection type; modelling; inertial relief; aerial vehicle

0 引言

在航空航天领域中，有限元法已成为大型飞行器结构强度的有效研究方法。（剩余6011字）