Dynamic response of metallic lattice sandwich structures to impulsive loading

2012 ◽  
Vol 43 ◽  
pp. 1-5 ◽  
Author(s):  
Xiaodong Cui ◽  
Longmao Zhao ◽  
Zhihua Wang ◽  
Han Zhao ◽  
Daining Fang
Keyword(s):  
Dynamic Response ◽  
Sandwich Structures ◽  
Impulsive Loading

Dynamic Response of Sandwich Anisotropic Flat Panels to Explosive Pressure Pulses

2001 ◽  
Author(s):  
Terry Hause ◽  
Liviu Librescu
Keyword(s):  
Dynamic Response ◽  
Detailed Analysis ◽  
Fiber Orientation ◽  
Sandwich Structures ◽  
Sandwich Panels ◽  
Core Layer ◽  
Time Dependent ◽  
Pressure Pulses ◽  
The Face ◽  
Advanced Model

Abstract This paper addresses the problem of the dynamic response in bending of flat sandwich panels exposed to time-dependent external pulses. The study is carried out in the context of an advanced model of sandwich structures that is characterized by anisotropic laminated face sheets and an orthotropic core layer. A detailed analysis of the influence of a large number of parameters associated with the particular type of pressure pulses, panel geometry, fiber orientation in the face sheets and, presence of tensile uni/biaxial edge loads is accomplished, and pertinent conclusions are outlined.

Anomalous dynamic response and failure of sandwich structures subjected to underwater impulsive loads

2020 ◽  
pp. 109963622090981
Author(s):  
Wei Huang ◽  
Sihua Deng ◽  
Wu Zhou ◽  
Jiayi Liu ◽  
Zhongcheng Mu ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Sandwich Structures ◽  
Impulsive Loads

Impulsive Forming of Shell Structures With Apertures

2003 ◽  
Author(s):  
V. Sabelkin
Keyword(s):  
Dynamic Response ◽  
High Explosive ◽  
Impulsive Loading ◽  
Shell Structures ◽  
Plastic Properties ◽  
Aperture Diameter ◽  
Jet Engine ◽  
Explosive Charges ◽  
Explosive Forming ◽  
Static And Dynamic Loading

Different modern shell structures are exposed to impulsive loading very often. Some of them may have different imperfections such as apertures, welds, and irregular thickness. These structures can be made by static or impulsive loading. To know fractureless dynamic response of shell structures with apertures is important in many cases, especially for forming processes, because of the first appeared fracture can extend through a shell blank especially if material is brittle with low plastic properties. The tooling for impact and static loading of flat and shell structures was developed. Dynamic response of shell structures with unsupported apertures on internal impulsive loading by point high explosive charges is described. Strain state of shaped shell structures with apertures after explosive forming is shown. The limit aperture diameter for dynamic fractureless response is determined. Distributions of strain intensities on a sample cross section for different aperture diameters, static and dynamic loading are shown. Different jet engine parts were made using developed technology.

Dynamic Response and Damage Mechanism of Two-Core Composite Sandwich Panels under Low-Velocity Impact

2013 ◽  
Vol 405-408 ◽  
pp. 2810-2814
Author(s):  
Chang Liang Li ◽  
Da Zhi Jiang ◽  
Jing Cheng Zeng ◽  
Su Li Xing
Keyword(s):  
Dynamic Response ◽  
Contact Force ◽  
Impact Energy ◽  
Sandwich Structures ◽  
Sandwich Panels ◽  
Damage Mechanism ◽  
The Other ◽  
Foam Core ◽  
Transverse Impact ◽  
Low Velocity

Dynamic response and damage mechanism of two-core sandwich panels with foam and honeycomb cores and glass fiber/epoxy composite sheets under low-velocity transverse impact are investigated. The emphasis is focused on the contact force response and crash mechanism of the two-core sandwich panels. Effects of configurations, impact energy levels and types of the cores on the dynamic response are investigated. A modified drop-test experiment is carried out to obtain contact force history of the two-core sandwich structures under different impact energies. The experimental results show that the 10:10 configurations for both honeycomb and foam core sandwich structures under lower impact energy absorb more impact energy than the other two structures. However, under higher impact energy, the honeycomb core sandwich structures of 15:5 configuration absorbs a little more impact energy than the other two, while for the foam core sandwich structures the 5:15 configuration shows a little better impact resistance. Results also show that when impact energy is low foam core sandwich structures do better in absorbing impact energy than the honeycomb ones.

The estimate of dynamic response of spacecraft and launcher fragmentation system components under impulsive loading

2015 ◽  
Vol 21 (1(92)) ◽  
pp. 15-19 ◽  
Author(s):  
M.G. Shulzhenko ◽  
◽  
B.P. Zajtsev ◽  
P.P. Gontarovskyi ◽  
T.V. Protasova ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Impulsive Loading ◽  
System Components
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