What is thermal finite element analysis?

Thermal Analysis Using FEA FEA uses the finite element method (FEM) and is primarily used to solve conduction heat transfer in a solid . From a thermal context, FEA considers convection and radiation effects in a simplified manner with a boundary condition for the heat transfer coefficient.

What is the cracking element method?

The cracking elements method (CEM) is a novel Galerkin-based numerical approach for simulating cracking and fracturing processes .

What is the difference between CFD and FEM analysis?

CFD (computational fluid dynamics) is the field of studying fluid mechanics dynamics Computationaly, whereas FEM (finite element method) is just one of the method to expand fluid equations and solve them. CFD is the field, FEM is one of the methods used in that field.

What are the two main for thermal analysis?

Thermogravimetric analysis: mass change versus temperature or time . Thermomechanical analysis: dimensional changes versus temperature or time .

What are the 3 types of cracking?

Cracking is a process by which complex molecules are broken into lighter molecules. It has a vital role in the commercial production of petroleum and other petroleum products. Thermal cracking, steam cracking, hydro cracking, and fluid catalysed cracking are the different types of cracking.

Which technique is most suitable to detect cracks and why?

Ultrasonic examination . It is probably the most versatile of the inspection techniques and used routinely as an inspection tool. In angle beam mode, ultrasonic examination can detect crack like defects down to less than 1 mm in size and can be used to size cracks down to less than 3 mm.

What is the best method of cracking?

Catalytic cracking is more efficient and produces higher-quality products, but it is also more complex and expensive. Hydrocracking is the most efficient and versatile method, but it also requires the most specialized equipment and conditions.

What does thermal analysis tell you?

Thermal analysis is a general term defining a technique used to analyze the time and temperature at which physical changes occur when a substance is heated or cooled . Each technique is defined according to the types of physical changes being analyzed.

What is a finite element analysis in simple terms?

Finite element analysis (FEA) is the use of calculations, models and simulations to predict and understand how an object might behave under various physical conditions . Engineers use FEA to find vulnerabilities in their design prototypes.

What is thermal analysis using TGA?

Thermogravimetric analysis (TGA) is a method of thermal analysis in which changes in physical and chemical properties of materials are measured as a function of increasing temperature (with constant heating rate) or as a function of time (with constant temperature and/or constant mass loss).

Why do we do thermal analysis?

Thermal analysis can be executed to find temperature distribution, temperature gradient, and heat flowing in the model, as well as the heat exchanged between the model and its environment .

Finite element analysis of crack closure in two-dimensional bodies subjected to heating (2024)

https://doi.org/10.1016/j.compstruc.2004.10.008

Journal: Computers & Structures, 2005, №4-5, p.303-314

Publisher: Elsevier BV

Authors: Georgios I. Giannopoulos, Nick K. Anifantis

List of references

Chen, Finite element analysis of mixed-mode thermoelastic fracture problems, Nucl Eng Des, № 90, с. 55
https://doi.org/10.1016/0029-5493(85)90031-7
Nied, Thermal shock fracture in an edge-cracked plate, J Therm Stresses, № 6, с. 217
https://doi.org/10.1080/01495738308942180
Kokini, On the use of the finite element method for the solution of a cracked strip under thermal shock, Eng Fract Mech, № 24, с. 843
https://doi.org/10.1016/0013-7944(86)90269-9
Chen, Coupled transient thermoelastic response in an edge-cracked plate, Eng Fract Mech, № 39, с. 915
https://doi.org/10.1016/0013-7944(91)90197-9
Kokini, Material compatibility in interfacial transient thermal fracture of ceramic-to-metal bonds, J Appl Mech, № 55, с. 767
https://doi.org/10.1115/1.3173720
Nakagaki, Elastic–plastic analysis of fatigue crack closure in modes I and II, AIAA J, № 18, с. 1110
https://doi.org/10.2514/3.50860
Fleck, Finite element analysis of plasticity-induced crack closure under plain strain conditions, Eng Fract Mech, № 25, с. 441
https://doi.org/10.1016/0013-7944(86)90258-4
McClung, On the finite element analysis of fatigue crack closure-1. Basic modeling issues, Eng Fract Mech, № 33, с. 237
https://doi.org/10.1016/0013-7944(89)90027-1
Sehitoglou, The significance of crack closure under high temperature fatigue crack growth with hold periods, Eng Fract Mech, № 33, с. 371
https://doi.org/10.1016/0013-7944(89)90087-8
Bayram, Enriched finite element-penalty function method for modeling interface cracks with contact, Eng Fract Mech, № 65, с. 541
https://doi.org/10.1016/S0013-7944(99)00134-4
Anifantis, Crack surface interference: a finite element analysis, Eng Fract Mech, № 68, с. 1403
https://doi.org/10.1016/S0013-7944(01)00028-5
Kokini, Transient heating vs cooling of interfacial cracks in ceramic-to-metal bonds, Eng Fract Mech, № 38, с. 371
https://doi.org/10.1016/0013-7944(91)90089-J
Figiel, Mechanical and thermal fatigue delamination of curved layered composites, Comput Struct, № 81, с. 1865
https://doi.org/10.1016/S0045-7949(03)00207-4
Nied, Thermal shock in an edge-cracked plate subjected to uniform surface heating, Eng Fract Mech, № 26, с. 239
https://doi.org/10.1016/0013-7944(87)90200-1
Rizk, A cracked plate under transient thermal stresses due to surface heating, Eng Fract Mech, № 45, с. 687
https://doi.org/10.1016/0013-7944(93)90274-V
Zhou, Thermal fracture characteristics induced by laser beam, Int J Solids Struct, № 38, с. 5647
https://doi.org/10.1016/S0020-7683(00)00357-7
Wiliams, The stresses around a fault or crack in dissimilar media, Bull Seismol Soc Am, № 49, с. 199
https://doi.org/10.1785/BSSA0490020199
Rice, Plane problems of cracks in dissimilar media, J Appl Mech, № 32, с. 418
https://doi.org/10.1115/1.3625816
Smelser, Evaluation of stress intensity factors for bimaterial bodies using numerical crack flank displacement data, Int J Fract, № 15, с. 135
https://doi.org/10.1007/BF00037829
Reynolds, The mechanics of interfacial fracture using the finite element method, J Eng Mater Technol, № 112, с. 38
https://doi.org/10.1115/1.2903184
Malyshev, The strength of adhesive joints using the theory of cracks, Int J Fract Mech, № 1, с. 114
https://doi.org/10.1007/BF00186749
Comninou, The interface crack, J Appl Mech, № 44, с. 631
https://doi.org/10.1115/1.3424148
Erdogan, Stress intensity factors, J Appl Mech, № 50, с. 992
https://doi.org/10.1115/1.3167212
Mukfhopadhyay, Further considerations in modified crack closure integral based computation of stress intensity factor in BEM, Eng Fract Mech, № 59, с. 269
https://doi.org/10.1016/S0013-7944(97)00135-5
Mukfhopadhyay, A review of SIF evaluation and modeling of singularities in BEM, Comput Mech, № 25, с. 358
https://doi.org/10.1007/s004660050483
LUSAS user’s manual. FEA Ltd, Forge House, 66 High Street, Kingston upon Thames, Surrey KT1 1HN, UK, 1999
Lee, Determination of thermal stress intensity factors for an interface crack under vertical uniform heat flow, Eng Fract Mech, № 40, с. 1067
https://doi.org/10.1016/0013-7944(91)90171-V