Modelling the viscoelasticity of ceramic tiles by finite element

2016 ◽  
Author(s):  
Ana Pavlovic ◽  
Cristiano Fragassa
Keyword(s):  
Finite Element ◽  
Ceramic Tiles

scholarly journals Snow fence load on a house roof with tiles

2018 ◽  
Vol 184 ◽  
pp. 02001
Author(s):  
Cornel Cătălin GavrilĂ ◽  
Mihai -Tiberiu LateŞ
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Final Part ◽  
Ceramic Tiles ◽  
Element Analysis ◽  
Snow Fence ◽  
The Finite Element Analysis ◽  
Virtual Modeling ◽  
General Aspects

Virtual modeling of mechanical structures, using computer performant software, is largely used in many fields. The paper presents some aspects regarding the loads on a snow fence mountig system, placed on a house roof with ceramic tiles. First, there are presented some general aspects of the snow fence types and mounting systems used. Then, there are Then there are presented the aspects about virtual modeling of these parts, using CATIA software. Also, there are presented some aspects about the Finite Element Analysis, respectively the results of this. In the paper final part, there are presented the conclusion.

Finite-element modelling of thermo-mechanical stress distribution in laser beam ceramic tile grout sealing process

2006 ◽  
Vol 220 (10) ◽  
pp. 1497-1508 ◽  
Author(s):  
A Liaqat ◽  
S Safdar ◽  
M A Sheikh
Keyword(s):  
Thermal Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Laser Beam ◽  
Mechanical Stress ◽  
Ceramic Tile ◽  
Element Model ◽  
Ceramic Tiles ◽  
Temperature Dependent ◽  
Heat Effects

Laser tile grout sealing is a special process in which voids between the adjoining ceramic tiles are sealed by a laser beam. This process has been developed by Lawrence and Li using a customized grout material and a high power diode laser (HPDL). The process has been optimally carried out at laser powers of 60–120 W and at scanning speeds of 3–15 mm/s. Modelling of the laser tile grout sealing process is a complex task as it involves a moving laser beam and five different materials: glazed enamel, grout material, ceramic tile, epoxy bedding, and ordinary Portland cement substrate. This article presents the finite element model (FEM) of the laser tile grout sealing process. The main aim of this model is to accurately predict the thermo-mechanical stress distribution induced by the HPDL beam in the process. For an accurate representation of the process, the laser was modelled as a moving heat source. A three-dimensional transient thermal analysis was carried out to determine the temperature distribution. Temperature-dependent material properties and latent heat effects, due to melting and solidification of the glazed enamel, were taken into account in the FEM, thereby allowing a more realistic and accurate thermal analysis. The results of the thermal analysis were used as an input for the stress analysis with temperature-dependent mechanical properties. The results obtained from the FEM are compared with the published experimental results.

scholarly journals Comparison of Numerical Simulation Techniques of Ballistic Ceramics under Projectile Impact Conditions

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 18
Author(s):  
Pawel Zochowski ◽  
Marcin Bajkowski ◽  
Roman Grygoruk ◽  
Mariusz Magier ◽  
Wojciech Burian ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Elements ◽  
Hybrid Method ◽  
Experimental Tests ◽  
Failure Criteria ◽  
Ceramic Tiles ◽  
Projectile Impact ◽  
Backing Plate ◽  
Composite Armor ◽  
Steel Composite

This article presents an analysis of the effectiveness of available numerical techniques in mapping the characteristic behavior of ballistic ceramics under projectile impact conditions. As part of the work, the ballistic tests were performed on the layered ceramic/steel composite armor and tested with the 7.62 × 39 mm, armor-piercing incendiary (API) BZ projectile. The experimental tests were then mapped using computer simulations. In numerical analyses, four different techniques were used to describe cubic ceramic tiles Al2O3 placed on the ARMOX 500T steel backing plate, i.e.,: the Finite Element Method without Erosion (FEM), Finite Element with erosion (FEM + Erosion), Smoothed Particles Hydrodynamics (SPH) and a hybrid method that converts finite elements to SPH particles after exceeding the defined failure criteria (FEM to SPH conversion). The effectiveness of the individual methods was compared in terms of quality (mapping of characteristic phenomena occurring during the penetration process), quantity (bulge height of the backing plate) and time needed to complete the calculations. On the basis of the results of the experiments and numerical simulations, it was noticed that the most accurate reproduction of the phenomenon of ballistic impact of AP projectiles on ceramic/steel composite armor can be obtained by using a hybrid method, incorporating the conversion of finite elements into SPH particles. This method should be used in cases where accuracy of the results is more important than the time required to complete the calculations. In other situations where the purpose of the calculation is not to determine, for example, the exact value of penetration depth but only to observe a certain trend, the FEM method with defined erosion criteria (variant 2), which is more than 10 times faster, can be successfully used.

Simulation on Ceramic Composite Armors against Multi-Hit of APPs

2011 ◽  
Vol 105-107 ◽  
pp. 1648-1652 ◽  
Author(s):  
Xiao Peng Kong ◽  
Zhi Gang Jiang ◽  
Fei Liu
Keyword(s):  
Finite Element ◽  
Ceramic Composite ◽  
Laminated Composite ◽  
Material Model ◽  
Numerical Results ◽  
Finite Element Code ◽  
Ceramic Tiles ◽  
Contact Algorithm

The multi-hit of armor piercing projectiles (APPs) is one of the main treats to lightweight vehicles. Based on published ballistic experiments of Al2O3/Al2024 laminated composite armors against 7.62mm APP, the debonding of ceramic tiles was successfully simulated by setting reasonable material model and contact algorithm. A method named Geometric Intervals Method (GIM) was developed for simulation of multi-hit and its feasibility and rationality were investigated with the finite element code LS-SYNA. The numerical results shows that GIM has taken into account the effects of target damage caused by former APP impact on the target responds to later APP penetration. GIM can be used to simulate composite amours against multi-hit.

Finite Element Analysis for the Upper Beam of 21MN Ceramic Press

2014 ◽  
Vol 556-562 ◽  
pp. 1030-1033
Author(s):  
Yuan Pan
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Hydraulic Press ◽  
Stress And Strain ◽  
Ceramic Tiles ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Design And Optimization ◽  
Stress And Strain Distribution ◽  
Ceramic Press

Full-automatic hydraulic press is widely used in ceramic industry for pressing the adobe of all kinds of specific ceramic tiles, so it is also referred to as ceramic press. The upper beam is one of the most critical stressed members of the ceramic press. The paper took 21MN ceramic press as the research object, completed the finite element static analysis of its upper beam. First established the three-dimensional model of the beam by CAD software Pro/ENGINEER, and then imported the model into CAE software ANSYS and analyzed the stress and strain distribution in detail. The results can provide some useful reference for ceramic press design and optimization.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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