Numerical analysis of face sheet buckling for a CFRP/ Nomex honeycomb sandwich panel subjected to bending loading

2021 ◽  
pp. 114037
Author(s):  
Mae Oiwa ◽  
Toshio Ogasawara ◽  
Hajime Yoshinaga ◽  
Tsuyoshi Oguri ◽  
Takahira Aoki
Keyword(s):  
Numerical Analysis ◽  
Sandwich Panel ◽  
Face Sheet ◽  
Honeycomb Sandwich ◽  
Nomex Honeycomb ◽  
Bending Loading

Degradation of shear stiffness of Nomex honeycomb sandwich panel in laser irradiation

2017 ◽  
Author(s):  
Jiawei Wang ◽  
Houman Jiang ◽  
Lixiong Wu ◽  
Yongxiang Zhu ◽  
Chenghua Wei ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Sandwich Panel ◽  
Shear Stiffness ◽  
Honeycomb Sandwich ◽  
Nomex Honeycomb

scholarly journals Numerical Simulation of Projectile Oblique Impact on Microspacecraft Structure

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Zhiyuan Zhang ◽  
Runqiang Chi ◽  
Baojun Pang ◽  
Gongshun Guan
Keyword(s):  
Sandwich Panel ◽  
Incident Angle ◽  
Hypervelocity Impact ◽  
Face Sheet ◽  
Front Face ◽  
Rear Face ◽  
Damage Area ◽  
Honeycomb Sandwich ◽  
Debris Cloud ◽  
Honeycomb Panel

In the present study, the microspacecraft bulkhead was reduced to the double honeycomb panel, and the projectile oblique hypervelocity impact on the double honeycomb panel was simulated. The distribution of the debris cloud and the damage of a honeycomb sandwich panel were investigated when the incident angles were set to be 60°, 45°, and 30°. The results showed that as incident angle decreased, the distribution of debris cloud was increased gradually, while the maximum perforation size of the rear face sheet was firstly increased with the decrease of the incident angle and then decreased. On the other hand, the damage area and the damage degree of the front face sheet of the second honeycomb panel layer were increased with the decrease of the incident angle. Finally, the critical angle of front and rear face sheets of the honeycomb sandwich panel was obtained under oblique hypervelocity impact.

Sound radiation and transmission loss characteristics of a honeycomb sandwich panel with composite facings: Effect of inherent material damping

2016 ◽  
Vol 383 ◽  
pp. 221-232 ◽  
Author(s):  
M.P. Arunkumar ◽  
M. Jagadeesh ◽  
Jeyaraj Pitchaimani ◽  
K.V. Gangadharan ◽  
M.C. Lenin Babu
Keyword(s):  
Sandwich Panel ◽  
Transmission Loss ◽  
Sound Radiation ◽  
Material Damping ◽  
Honeycomb Sandwich

Numerical Analysis and Mechanical Properties of Nomex™ Honeycomb Core

2017 ◽  
Author(s):  
Yue Liu ◽  
Weicheng Gao ◽  
Wei Liu ◽  
Zhou Hua
Keyword(s):  
Compressive Strength ◽  
Cell Walls ◽  
Mechanical Response ◽  
Compressive Loading ◽  
Fe Model ◽  
Honeycomb Core ◽  
Practical Applications ◽  
Honeycomb Sandwich ◽  
Nomex Honeycomb ◽  
Strength And Stiffness

This paper presents an investigation on the mechanical response of the Nomex honeycomb core subjected to flatwise compressive loading. Thin plate elastic in-plane compressive buckling theory is used to analyze the Nomex honeycomb core cell wall. A mesoscopic finite element (FE) model of honeycomb sandwich structure with the Nomex honeycomb cell walls is established by employing ABAQUS/Explicit shell elements. The compressive strength and compressive stiffness of Nomex honeycomb core with different heights and thickness of cell walls, i.e. double cell walls and single cell walls, are analyzed numerically using the FE model. Flatwise compressive tests are also carried out on bare honeycomb cores to validate the numerical method. The results suggest that the compressive strength and compression stiffness are related to the geometric dimensions of the honeycomb core. The Nomex honeycomb core with a height of 6 mm has a higher strength than that of 8 mm. In addition, the honeycomb core with lower height possesses stronger anti-instability ability, including the compressive strength and stiffness. The proposed mesoscopic model can effectively simulate the crushing process of Nomex honeycomb core and accurately predict the strength and stiffness of honeycomb sandwich panels. Our work is instructive to the practical applications in engineering.

Sign in / Sign up

Export Citation Format

Share Document