Numerical simulation of shock waves in linear-elastic plates with curvilinear boundaries and material interfaces

In this paper, we Research on Propagation Numerical Simulation and damage effect of Blast Shock Waves in Subway Station by using LS-DYNA dynamic finite element calculation program , the results reproduce the formation process of the explosive flow field, and analysis the shock wave waveform, attenuation and walking pattern, provides the theoretical basis for further experimental study.

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Influence of the Interface and Residual Stresses on the Apparent Fracture Toughness of Layered Ceramic Composites Based on Alumina-Zirconia

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.606.209 ◽

2014 ◽

Vol 606 ◽

pp. 209-212

Author(s):

Luboš Náhlík ◽

Bohuslav Máša ◽

Pavel Hutař

Keyword(s):

Residual Stresses ◽

Crack Propagation ◽

Ceramic Composites ◽

Layered Composites ◽

Material Interfaces ◽

Linear Elastic ◽

Apparent Fracture Toughness ◽

Elastic Fracture ◽

Layered Ceramic ◽

Good Agreement

This paper deals with the fracture behaviour of layered ceramic composite with residual stresses. The main goal is to investigate the effect of residual stresses and material interfaces on crack propagation by more complex 3D finite element models. The crack behaviour was described by analytical procedures based on linear elastic fracture mechanics (LEFM) and generalized LEFM. The influence of laminate composition with residual stresses on critical values for crack propagation through the laminate interfaces was also determined. Good agreement has been found to exist between numerical results and experimental data. The results obtained can be used for a design of new layered composites with improved resistance against crack propagation.

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Bending and In-Plane Deformation of Linear Elastic Plates

Solid Mechanics and Its Applications - Elementary Continuum Mechanics for Everyone ◽

10.1007/978-94-007-5766-0_15 ◽

2013 ◽

pp. 273-276

Author(s):

Esben Byskov

Keyword(s):

Plane Deformation ◽

Elastic Plates ◽

Linear Elastic

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Numerical Simulation of Shock Waves through Combustible Two-Phase Media

Shock Waves @ Marseille II ◽

10.1007/978-3-642-78832-1_32 ◽

1995 ◽

pp. 191-196

Author(s):

A. Koichi Hayashi ◽

Takayuki Fuyuto ◽

Toshi Fujiwara

Keyword(s):

Numerical Simulation ◽

Shock Waves ◽

Two Phase

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An adaptive p-FEM for three-dimensional concrete aggregate models

International Journal of Modeling Simulation and Scientific Computing ◽

10.1142/s179396232050004x ◽

2020 ◽

Vol 11 (01) ◽

pp. 2050004

Author(s):

Ruiqi Guo ◽

Yingxiong Xiao

Keyword(s):

Numerical Simulation ◽

Finite Element ◽

Three Dimensional ◽

Poor Quality ◽

Numerical Results ◽

Concrete Aggregate ◽

Material Interfaces ◽

Reinforced Composite ◽

Text Version ◽

Particle Reinforced Composite

Numerical simulation for concrete aggregate models (CAMs) with different shape aggregates usually requires high accuracy and convergence near the material interfaces. But high memory usage will be needed for those traditional finite element methods such as the method by using mesh refinement throughout the domain. Thus, an adaptive [Formula: see text]-version finite element method ([Formula: see text]-FEM) is proposed in this paper for the solution of 3D CAM problems, and meanwhile the resulting adaptive computational algorithm and post-processing program are presented. We firstly focused two typical 3D weak discontinuity problems on the influence of different convergence criterions for the computational results of each point on the interface in order to verify the efficiency and convergence of the resulting [Formula: see text]-FEM, and then this method is successfully applied to the numerical simulation of CAMs with different shape aggregates. In addition, an efficient hybrid realization method which combines ANSYS and Hypermesh software is also presented in order to quickly establish the geometric models of 3D CAMs. The numerical results have been shown that the proposed [Formula: see text]-FEM can efficiently solve the concrete-like particle-reinforced composite problems and more accurate numerical results can be obtained under the case of fewer elements used in simulation of CAMs, even there being some elements with poor quality.

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