Computational Analysis of Compressed Stiffened Composite Panels with Impact Damage

Aerospace

VladimirG. Slobodchikov¹  DmitryY. Strelets²  AlexanderA. Ryabov³  EvgenyE. Maslov³ 

[1] Joint-Stock Company, Aero Composite, Moscow 125284, Russia;Moscow Aviation Institute, National Research University, Moscow 125993, Russia;Sarov Engineering Center, Nizhny Novgorod Region, Techno-Park «Sarov» 607328, Russia;

关键词: composite stiffened panels;    stresses;    strains;    kinetic energy;    carrying capacity;    dynamic loading;    impact damage;    static compression;    finite element method;    explicit scheme;   

DOI  :  10.3390/aerospace6030025

来源: DOAJ

【 摘 要 】

A complex modeling technique is presented in this paper for a numerical analysis of compressed stiffened composite panels with impact damage. The numerical technique is based on the LS-Dyna code application, which simulates both the dynamic deformation of the panel subjected to a local impact and the quasi-static uniform compression of the panel within the local damage zone. The technique has been validated by both impact and compression experimental tests of the stiffened composite panel. The obtained numerical results show that impact damage to the composite panel can reduce the carrying capacity in more than 50% of damaged panels compared to undamaged panels.

【 授权许可】

Unknown