摘要
文中通过最小势能原理,给出了流体域计算载荷(CFD),转化到固体域计算载荷(FEA)的方程和在程序中的实施方法,即将流体域表面压力(压强)转换成固体域有限元模型的节点力,直接形成载荷向量(列阵)的方法。该方法能够适应任何曲面形式的飞行器外表面,且不会出现0值等数值奇异问题,对飞行器外表面的平滑性也无特殊要求,具有程序实施运行效率高、计算精度高、便于和商业有限元分析软件接口、通用性较强的特点。
Based on the principle of minimum potential energy,the equation for transforming the computational load in fluid domain into the computational load in solid domain and the implementation method in program are given.That is,surface pressure in fluid domain is converted into nodal force of the finite element modal in solid domain to form the load array directly.This method can adapt to any surface form of aircraft,without zero value and other numerical singularity problems,and has no special requirements for smoothness of aircraft external surface.It has the characteristics of high efficiency of program implementation,high calculation accuracy,convenient interface with commercial finite element software and strong versatility.
作者
王骁峰
段妍
张皓
赵黄达
WANG Xiaofeng;DUAN Yan;ZHANG Hao;ZHAO Huangda(Science and Technology on Space Physics Laboratory,Beijing 100076,China)
出处
《飞机设计》
2025年第2期32-37,共6页
Aircraft Design
