NUMERICAL SIMULATION OF RESIDUAL STRENGTH FOR INSERTS IN SANDWICH STRUCTURES

2020 ◽  
Vol 11 (3) ◽  
pp. 209-225
Author(s):  
Kittigorn Chalernphonb ◽  
Natthawat Hongkarnjanakul ◽  
Laurent Mezeix
Keyword(s):  
Numerical Simulation ◽  
Residual Strength ◽  
Sandwich Structures

On Strength Reserve Assessment for Prismatic Folded Plate Roof Structures

2015 ◽  
Vol 725-726 ◽  
pp. 922-927
Author(s):  
Vitaly Kolchunov ◽  
Evgeny Osovskih ◽  
Pavel Afonin
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Residual Strength ◽  
Limit State ◽  
Experimental Studies ◽  
Limit States ◽  
Mechanical Loads ◽  
Methods Of Calculation ◽  
Environmental Actions ◽  
Strength Reserve

The paper presents the results of experimental studies and numerical simulation of straining and failure of reinforced concrete folded-plate roof structures in limit and out-of-limit states performed on models and real structures, taking into account the combined mechanical loads and environmental actions. The results of the study show that in the process of reconstruction design for concrete prismatic roof structures of operated industrial and public buildings, along with the traditional limit state methods of calculation it is reasonable to carry out a residual strength reserve analysis.

Research on the Anti-Penetration Performance of Aluminum Foam Sandwich Plate

2014 ◽  
Vol 624 ◽  
pp. 20-24 ◽  
Author(s):  
Gui Yun Hang ◽  
Wen Li Yu ◽  
Tao Wang ◽  
Jin Tao Wang ◽  
Zhen Li
Keyword(s):  
Numerical Simulation ◽  
Finite Elements ◽  
Dynamic Response ◽  
Direct Effect ◽  
Aluminum Foam ◽  
Sandwich Plate ◽  
Sandwich Structures ◽  
Simulation Method ◽  
Foam Core ◽  
Penetration Process

This paper investigated the anti-penetration performance of different sandwich structures plate using numerical simulation method. Finite elements models of the bullet and sandwich plate were established. The penetration performance of sandwich plate by bullet was simulated by software of LS-DYNA and dynamic response of the bullet during the penetration process was got. The results show that the anti-penetration performance is different because of the different cores in the plate. Besides, the density of the aluminum foam core has a direct effect on the performance. This paper could provide some reference for the designing of sandwich structures.

Numerical simulation of Lamb wave propagation in metallic foam sandwich structures: a parametric study

2013 ◽  
Vol 97 ◽  
pp. 387-400 ◽  
Author(s):  
Seyed Mohammad Hossein Hosseini ◽  
Abdolreza Kharaghani ◽  
Christoph Kirsch ◽  
Ulrich Gabbert
Keyword(s):  
Numerical Simulation ◽  
Wave Propagation ◽  
Parametric Study ◽  
Lamb Wave ◽  
Sandwich Structures ◽  
Metallic Foam ◽  
Lamb Wave Propagation

Numerical Calculation of the Aircraft Skin with Multi-Site Damage

2009 ◽  
Vol 25 (1) ◽  
pp. 37-47
Author(s):  
Andrzej Leski
Keyword(s):  
Numerical Simulation ◽  
Numerical Calculation ◽  
Residual Strength ◽  
Crack Size ◽  
Opening Angle ◽  
Aircraft Structure ◽  
Crack Tip Opening Angle ◽  
Aircraft Skin ◽  
Crack Tip Opening ◽  
Stable Tearing

Numerical Calculation of the Aircraft Skin with Multi-Site DamageThe presence of the multi-site damage (MSD) in an aircraft structure can result in catastrophic damage when the residual strength is not sufficient to sustain operational loads. In this paper the influence of the MSD crack size on the residual strength was examined. As a crack criterion the crack tip opening angle (CTOA) was applied in the numerical simulation of the stable tearing. The CTOA criterion was implemented in the commercial software, the MSC.Marc, by means of additional user subroutines. The verification of this implementation was carried out and the obtained results are consistent with those presented in literature. The influence of the MSD crack size was determined for two crack scenarios: with a leading crack and without one.

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