residual stress and deformation energy storage
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Stress–strain curve and stored energy during uniaxial deformation of polycrystals …
Theoretical analysis of the stress–strain curve for elastic-perfectly plastic polycrystalline material has shown that only the part of stored energy can be calculated from the stress–strain curve. This part is the energy stored during non-homogeneous plastic deformation. The results of such calculation have been compared with the total ...
يتعلم أكثرInfluence of deposition path strategy on residual stress and deformation …
It should be noted that besides the deposition pattern, the path-planning deposition strategy also has significant influences on the residual stresses and deformation of deposited components during the WAAM process. Li et al. [17] investigated the influence of deposition strategy on the distortion of a square sheet during a WAAM …
يتعلم أكثرA Finite Element Analysis on the Effect of Scanning Pattern and Energy on Residual Stress and Deformation …
However, the effects of AM parameters, such as the scanning pattern and energy, on the residual stress and deformation, are still not completely understood. In this work, a finite element (FE) study has been conducted to understand the influence of different scanning patterns (alternate, in-out, raster and zigzag) and energies on residual stress …
يتعلم أكثرResidual Stress in Engineering Materials: A Review
The accurate determination of residual stresses has a crucial role in understanding the complex interactions between microstructure, mechanical state, mode(s) of failure, …
يتعلم أكثر(PDF) Stored Energy and Recrystallization Process
Stored energy plays a crucial role in recrystallization process. One can distinguish two contributions to this energy. The first one is the elastic energy, connected with residual stresses, i.e ...
يتعلم أكثرMaterials | Free Full-Text | Research on the Analysis of Residual Stress …
15 · Taking austenitic stainless-steel bellows as the research object, a finite element model for the heat treatment of austenitic stainless-steel bellows was constructed based on ABAQUS CAE 2022. The physical properties of the bellows after the heat treatment were analyzed using experimental and simulated curve processing analysis …
يتعلم أكثرEffects of scanning strategies on residual stress and deformation …
The path-dependent residual stress and deformation are two critical defects of the parts fabricated by direct energy deposition (DED). The optimal design of the scanning strategy is an important method for controlling the residual stress and …
يتعلم أكثرHigh enthalpy storage thermoset network with giant stress and energy …
The stress and energy storage and recovery behavior. a The fully constrained stress recovery profile in rubbery state (recovered at 170 C for 8 h; the glass transition zone is between 140 and 160 ...
يتعلم أكثرComponents Residual Stress and Deformation Reduction: An …
Abstract. Additive Manufacturing (AM) is a key technology in current industrial transformations thanks to the significant benefits that can bring to high-level sectors. Nevertheless, AM-based design approaches require improvements that are fundamental to exploit the potentials of the technology and reduce the lack of process …
يتعلم أكثرResidual stresses in thin walled-structures manufactured by directed energy …
Residual stresses control is a major challenge in DED, as thin-walled structures are subjected to warping, buckling or fracture. Thus, prediction and control of …
يتعلم أكثرMaterials | Free Full-Text | Residual Stress Control Using Process Optimization in Directed Energy …
This paper mainly analyzes the typical thermodynamic response (thermal history, thermal strain and residual stress) in a conventional continuous-wave (CW) laser during Directed Energy Deposition (DED). The influence of process parameters (laser power and scanning speed) on the temperature gradient in the heat-affected zone, thermal strain and …
يتعلم أكثرMaterials | Free Full-Text | A Finite Element Analysis on the Effect of Scanning Pattern and Energy on Residual Stress and Deformation …
However, the effects of AM parameters, such as the scanning pattern and energy, on the residual stress and deformation, are still not completely understood. In this work, a finite element (FE) study has been conducted to understand the influence of different scanning patterns (alternate, in-out, raster and zigzag) and energies on residual stress …
يتعلم أكثرA process-based inherent strain method for prediction of …
Accurate and efficient prediction of deformation and residual stress in large metal components manufactured through wire-arc directed energy deposition is …
يتعلم أكثرA process-based inherent strain method for prediction of deformation and residual stress for wire-arc directed energy …
Accurate and efficient prediction of deformation and residual stress in large metal components manufactured through wire-arc directed energy deposition is essential for optimizing the process parameters and ensuring the quality of the components. The finite element method (FEM) together with the inherent strain concept is a promising …
يتعلم أكثرEnergy Dissipation of Ordinary Concrete under Discontinuous Cyclic Compression Loading and Numerical Simulation of the Residual Stress …
The dissipated energy and unloading deformation modulus increase with an increase in the stress level. The cumulative rate of fatigue damage in the A cycles is noticeably higher than that in B cycles.
يتعلم أكثرMaterials | Free Full-Text | Residual Stress Control Using Process …
There exists high residual tensile stress in the middle of the deposited sample, and the stress is even higher than the yield strength of the material, which can be explained by …
يتعلم أكثرStress–strain curve and stored energy during uniaxial deformation of polycrystals …
One of the possible ways of the stored energy estimation is the use of stress-strain curve [16,17]. In [18], it is shown that this method can give us only part of the stored energy value connected ...
يتعلم أكثرStress–strain curve and stored energy during uniaxial deformation of polycrystals …
Schematic diagram for the calculation of the part of stored energy on the basis of stress–strain curve. It is seen ( Fig. 8) that the stored energy, connected with non-homogeneous plastic deformation, calculated from stress–strain curve for all tested materials is smaller than the total stored energy determined experimentally. 5.
يتعلم أكثرThe stored energy in metals and the concept of residual microstress…
Another stored energy method from the stress-strain curve is proposed by Skelton [18][19][20] and Aravas [3]; they suggested that the shaded area in Figure 2b is the internal energy stored in the ...
يتعلم أكثرMicrostructure, residual stress, and mechanical properties …
Because deformation twinning requires a higher energy than slip deformation, the appearance of deformation twins further indicates that the storage energy in the high-density dislocation entanglement region is very large, resulting in a high residual stress.
يتعلم أكثرA process-based inherent strain method for prediction of deformation and residual stress for wire-arc directed energy …
Semantic Scholar extracted view of "A process-based inherent strain method for prediction of deformation and residual stress for wire-arc directed energy deposition" by Tongcheng Du et al. DOI: 10.1007/s00466-023-02400-0 Corpus ID: 263840107 A process-based ...
يتعلم أكثرMaterials | Free Full-Text | Numerical Analysis of Curing Residual Stress and Deformation in Thermosetting Composite Laminates …
A multi-physics coupling numerical model of the curing process is proposed for the thermosetting resin composites in this paper, and the modified "cure hardening instantaneously linear elastic (CHILE)" model and viscoelastic model are adopted to forecast residual stress and deformation during the curing process. The …
يتعلم أكثرEvolution of residual stress and interface coherency and their impact on deformation …
Hardness of nanostructured metallic multilayers (NMMs) are often understood from their dependence on individual layer thickness (h), yet little is known about the impacts exerted by other microstructural factors. In this work, the effects of residual stress and interface coherency on the deformation mechanisms of Al/Ti NMMs with h = …
يتعلم أكثرMaterials | Free Full-Text | Effect of Tensile Deformation on Residual Stress of …
In order to reduce the residual stress of the GH4169 alloy, the effect and micro-mechanism of the tensile deformation were studied. The residual stress, dislocation density, and distribution of the GH4169 alloy were analyzed by X-ray residual stress tester, X-ray diffractometer (XRD), and electron backscatter diffraction (EBSD). The results …
يتعلم أكثرA semi-analytical model for rapid prediction of residual stress and deformation …
The effect of energy density E = P/v on the temperature and stress histories during the LPBF is demonstrated in this example. The model geometries are set as L x = L y = 3.6 mm, h s = 0.38 mm, and h p = 0.12 mm. Fig. 3 shows the stress and displacement evolutions at point R for the scanning speed of 1200 mm/s, where the …
يتعلم أكثرResidual stresses and deformations of laser additive …
This paper summarizes the factors affecting the residual stress and deformation of LAM parts, introduces the methods commonly used to detect the residual stress and deformation of LAM parts, and compares their applications, advantages and disadvantages, expounds five methods for predicting the deformation of LAM parts, …
يتعلم أكثرEnergies | Free Full-Text | Energy Storage and Release of Class I …
However, the energy evolution across the complete deformation of different types of rocks and the effect of high confinement on energy storage and release are not well understood in the literature. In this study, a series of cyclic triaxial compression tests were conducted for Class I and Class II rocks to investigate the confinement …
يتعلم أكثرExperimental study on evolution in the characteristics …
The relative residual deformation at different stages is shown in Figure 7B. The relative residual deformation of coal samples gradually decreased at the initial stage of cyclic loading-unloading, then …
يتعلم أكثرFull article: Effects of path patterns on residual stresses and …
Deposition path patterns play an important role in controlling residual stresses and deformation in direct energy deposition-arc (DED-arc) process. In this …
يتعلم أكثرA Review of Residual Stress and Deformation Modeling for Metal …
Residual stress and deformation are critical issues experienced by additively manufactured parts. Modeling the additive manufacturing process provides …
يتعلم أكثرEffects of scanning strategies on residual stress and deformation by high-power direct energy …
However, the residual stress and deformation, considered a vital topic for the AM research community [10], [17], have not been addressed for the high-power DED technology. Due to high laser power, the vast heat input is induced during the deposition, leading to more extensive residual stress and deformation in parts compared to the …
يتعلم أكثرThermodynamic description of the plastic work partition into stored energy and heat during deformation …
Since the stored energy can be divided into at least two parts: the energy of stress field connected with uniform and non-uniform deformation in micro-scale at the grain level, the energy storage rate can also be divided into two appropriate terms. The stored energy E s 1 connected with non-uniform deformation is a sum of a lattice …
يتعلم أكثرTime Interval Effect in Triaxial Discontinuous Cyclic Compression Tests and Simulations for the Residual Stress …
When rock salt is subjected to discontinuous fatigue, time intervals (periods during which the stress remains constant) can accelerate plastic deformation and reduce the fatigue life due to the internal residual stress generated between various defects and the host material. However, the time interval effect on rock salt in a three …
يتعلم أكثرResidual stress and deformation in UHS quenched steel butt …
The length and width of the butt-welded joint with 5 mm thickness both are 300 mm. The welding conditions are shown in Table 1. The base metal was 1500 MPa grade low alloy UHS quenched steel, and the filler wire was ER307Si. The chemical compositions of the two materials are shown in Table 2. Table 1.
يتعلم أكثرResidual stress mitigation in directed energy deposition
Highlights. •. Directed energy deposition of model binary alloy: hard phase Fe and soft phase Cu. •. Residual stress in as-deposited samples was measured and …
يتعلم أكثرA Finite Element Analysis on the Effect of Scanning Pattern and Energy on Residual Stress and Deformation …
Energy on Residual Stress and Deformation in Wire Arc Additive Manufacturing of EH36 Steel Muhammad Hassaan Ali and You Sung Han * Department of Mechatronics Engineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012 * ...
يتعلم أكثرResidual stress in laser-based directed energy deposition of …
The validation of the predicted residual stress is made by comparison with the actual stress resulting from X-ray diffraction. Simulations of laser-based directed energy deposition of metals have received increasing interest aimed at reducing the experimental effort to select the p
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