Experimental and numerical investigations of dynamic response and failure of fluid-filled container under blast loadings from a cased charge

2019 ◽  
Vol 227 ◽  
pp. 111339
Author(s):  
Xiangshao Kong ◽  
Xuyang Wang ◽  
Cheng Zheng ◽  
Jingbo Xu ◽  
Ying Li ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Numerical Investigations ◽  
Blast Loadings

scholarly journals Numerical investigations of the dynamic response of a floating bridge under environmental loadings

2018 ◽  
Vol 13 (sup1) ◽  
pp. 113-126 ◽  
Author(s):  
Yanyan Sha ◽  
Jørgen Amdahl ◽  
Aleksander Aalberg ◽  
Zhaolong Yu
Keyword(s):  
Dynamic Response ◽  
Numerical Investigations ◽  
Floating Bridge

scholarly journals Environmental influences on propagation of explosive wave on the dynamic response of plate

2014 ◽  
Vol 62 (3) ◽  
pp. 423-429
Author(s):  
W. Barnat
Keyword(s):  
Shock Wave ◽  
Experimental Study ◽  
Dynamic Response ◽  
Environmental Impacts ◽  
Environmental Influences ◽  
Commercial Software ◽  
Test Plate ◽  
Numerical Investigations ◽  
Explosive Wave ◽  
Explosive Device

Abstract The purpose of this article is to present the influence of the environment on the propagation of a shock wave and the dynamic response of the plate load by a shock wave. In the course of research in this field an experimental study was performed. An experimental study concerns the test plate loaded by a shock wave, formed after the detonation of an explosive device with equivalent weighing of TNT equal to 1 kg. During numerical investigations environmental impacts have been tested on the dynamic response disc. The considered environments of explosions were air water and soil. A model of the phenomenon has been prepared using commercial software MSC DYTRAN.

scholarly journals Experimental and numerical investigations on dynamic response performance of a cable laying vessel in complex operating conditions

2019 ◽  
Vol 11 (5) ◽  
pp. 168781401984785
Author(s):  
Weilong Peng ◽  
Lingling Gao ◽  
Yang Wang ◽  
Shiqiang Li ◽  
Xutao He ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Operating Conditions ◽  
Numerical Investigations ◽  
Cable Laying ◽  
Response Performance

Practical Considerations for the Structural Analysis of Offshore Topside Structures Under Gas Explosion Accidents

2012 ◽  
Author(s):  
Dae Suk Han ◽  
Gyusung Kim ◽  
Woo Seung Sim ◽  
Young Sik Jang ◽  
Hyun Soo Shin
Keyword(s):  
Structural Analysis ◽  
Offshore Structures ◽  
Structural Members ◽  
Gas Explosion ◽  
Element Analysis ◽  
Numerical Investigations ◽  
The Finite Element Analysis ◽  
Explosion Accidents ◽  
Blast Loadings ◽  
Dynamic Structural Analysis

Gas explosion accidents have been recognized as a major hazard of offshore facilities in oil & gas industries. Due to the nature of offshore topside structures, even a single collapse of structural members or equipments may lead to enormous economic and environmental losses. Therefore, such potential hazards that cause the accidental collapse need to be evaluated closely. Gas explosion has been categorized as an important issue of the design of offshore structures regarding the severity of the accident. This paper presents practical considerations for the nonlinear dynamic structural analysis of offshore structures under blast loadings from gas explosion accidents. Numerical investigations including modeling of blast loads and idealization of structural materials and members have been conducted for the overall topside structures. As a design step for offshore structures under blast loadings, an applicable guidance on the finite element analysis (FEA) is described in this study.

DYNAMIC RESPONSE OF METALLIC SANDWICH PANELS UNDER BLAST LOADINGS

2012 ◽  
Vol 12 (03) ◽  
pp. 1250017 ◽  
Author(s):  
HONGXIN WANG ◽  
XIAOXIONG ZHA ◽  
JIANQIAO YE
Keyword(s):  
Finite Element ◽  
Energy Balance ◽  
Dynamic Response ◽  
Analytical Method ◽  
Sandwich Panels ◽  
Fe Model ◽  
Test Results ◽  
Fluid Structure Interactions ◽  
Parametric Studies ◽  
Blast Loadings

An energy-balance-based analytical method and finite element (FE) simulations were developed in this paper to study the dynamic response of metallic sandwich panels subject to blast loadings. The analytical model can be used to predict approximately the deflection of the panels, while the FE model can take into account fluid–structure interactions and the effect of strain rate. Both models were validated by comparing their predictions with the test results available in the literature. Parametric studies were then carried out to assess various factors that are influential in characterizing the dynamic behavior of sandwich panels subject to blast loads.

Numerical and experimental results for the frequency response of plates in similitude

2016 ◽  
Vol 230 (18) ◽  
pp. 3212-3221 ◽  
Author(s):  
V Meruane ◽  
Sergio De Rosa ◽  
Francesco Franco
Keyword(s):  
Experimental Data ◽  
Finite Elements ◽  
Dynamic Response ◽  
Frequency Response ◽  
Scaling Laws ◽  
Rectangular Plates ◽  
Scaled Model ◽  
Structural Dynamic ◽  
Numerical Investigations ◽  
Clamped Edge

The concept of structural similitude provides a powerful tool for engineers and scientists to predict the behaviour of a structure using an appropriate scaled model. Even tough theoretical and numerical investigations of similarity conditions or scaling laws have shown to be feasible, their accuracy is not necessarily guaranteed when these laws are applied to real (experimental) structures. Herein, structural scaling laws are investigated for the analysis of the dynamic response of simple flexural plates. Specifically, the possibility to define exact and distorted similitudes is discussed through numerical and experimental data. This paper focuses on exact and distorted similitudes in the analysis of the dynamic response of flexural plates. The similitude laws are defined by invoking the classical modal approach and looking for (in)equalities in the structural dynamic response. A total of seven aluminium rectangular plates with one clamped edge are modelled in finite elements and tested experimentally to study the effect of distorted similitudes and experimental variations in the performance of the predicted dynamic response.

Numerical investigations on blast resistance of sandwich panels with multilayered graded hourglass lattice cores

2018 ◽  
Vol 22 (7) ◽  
pp. 2139-2156 ◽  
Author(s):  
Lihong Yang ◽  
Xiao Han ◽  
Lijia Feng ◽  
Zongbing Chen ◽  
Guocai Yu ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Energy Absorption ◽  
Blast Resistance ◽  
Three Dimensional ◽  
Sandwich Panels ◽  
Core Layer ◽  
Load Intensity ◽  
Lattice Core ◽  
Blast Loadings ◽  
Impulsive Pressure

This research focuses on the dynamic response of sandwich panels with multilayered graded hourglass lattice core subjected to blast loading. A three-layer lattice core configuration is proposed to improve the absorption efficient of kinetic energy resulted from blast shock wave. The relative density of each core layer is changed with sectional dimension of core truss members to regulate the energy absorption of each core layer. Three-dimensional numerical simulation analyses of dynamic response are carried out, and the applied impulsive pressure distribution on the surface of the panels is calculated using the CONWEP code. The panels are made of stainless steel AL6XN, which is assumed to follow bilinear strain hardening and strain rate-dependence. Peak back sheet deflection and energy absorption of core layers for four types of hourglass lattice panels are comparatively analyzed and the effects of load intensity on the peak deflection are discussed. Furthermore, the near-optimal configuration under blast loadings is proposed.

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