一种面向数字孪生的螺栓连接结构多尺度模型同步演化方法
A Synchronous Evolution Method for Multi-Scale Modeling of Bolted Connection Structure Oriented towards Digital Twins
张起 1张音旋 1吴江鹏1
作者信息
- 1. 沈阳飞机设计研究所,辽宁沈阳 110035
- 折叠
摘要
针对传统航空结构多尺度仿真计算效率低,难以满足数字孪生同步演化需求的问题,面向裂纹扩展与其带来的刚度退化,基于子模型法提出了一种兼顾计算效率与求解准确性的多尺度建模仿真与同步演化方法.以常用的螺栓连接平板为研究对象,基于Abaqus有限元软件对所提算法进行了实现,并提出了刚度等效、子划分等手段加速求解过程.结合带螺栓螺孔平板结构验证了所提方法的可行性与实用性,仿真结果符合工程认知,可为航空结构数字孪生同步演化提供方法参考.
Abstract
In response to the issues of low efficiency and inability to meet the requirements of syn-chronous evolution of digital twins in traditional aerospace structures multi-scale simulation,particu-larly in relation to crack propagation and resulting stiffness degradation,a multi-scale modeling,sim-ulation,and synchronous evolution method is proposed based on the submodeling technique,aiming to balance computational efficiency and solution accuracy.Taking the commonly used bolted connec-tion plate as the research object,the proposed algorithm is implemented using Abaqus finite element software,and methods such as stiffness equivalence and sub-division are proposed to accelerate the solution process.The feasibility and practicality of the proposed method are verified through simula-tions on bolted plate structures,which align with engineering knowledge,providing a reference for the synchronous evolution of aerospace structures in digital twins.
关键词
子模型/裂纹扩展/边界条件/数字孪生Key words
submodeling/crack propagation/boundary conditions/digital twins引用本文复制引用
出版年
2024
NETL
NSTL
万方数据