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Non-local stress approach in conjunction with reinforcement isotropic solid model (NLS-RIS): an efficient orthotropic mixed mode I/II fracture criterion
Providing any accurate fracture criteria for composite materials requires consideration of energy dissipation effects at the crack tip due to its quasi-brittle nature. In this paper, a non-local damage model i...
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Article
In the ability to extend Hashin criterion for mixed mode I/II fracture assessment of cracked orthotropic materials
The problem of fracture assessment of orthotropic materials under mixed mode I/II loading is investigated in this study. The Hashin criterion, which is widely used to study the failure of composite materials, ...
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Article
Fracture study of wood considering the effect of T-stress term based on matrix reinforcement coefficients model
A new comprehensive criterion has been presented to assess the fracture response in cracked wood as natural orthotropic material based on the maximum strain energy release rate criterion (SER) under mixed-mode...
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Article
Appropriate fitted point on fracture limit curve of orthotropic materials to include the fracture process zone effects on mixed-mode I/II fracture criterion
The fracture phenomenon in orthotropic materials is associated with the formation of the fracture process zone at the crack tip. Several toughening mechanisms in this zone delay the fracture by absorbing energ...
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Article
Mixed-mode I/II criterion based on combining Hill failure analysis and reinforcement isotropic solid model
Several failure criteria for fibrous and non-fibrous anisotropic materials were proposed after considering numerous implementations in various industries. Failure theories are classified as including or exclud...
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Article
Mixed-mode fracture assessment of wooden structures with cracks initiated along and across the fibers considering non-singular T-stress term
A new criterion for investigating the failure of wooden structures using maximum shear stress (MSS) under mixed mode I/II was presented for two conditions in which the crack is oriented along and across the fi...
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Article
Probabilistic thermal stability of laminated composite plates with temperature-dependent properties under a stochastic thermal field
Probabilistic thermal buckling analysis of composite plates with temperature-dependent properties under stochastic thermal fields is performed by develo** a new temperature increment-based algorithm for solv...
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Article
Progressive failure analysis of notched composite plate by utilizing macro mechanics approach
In this study, gradual and sudden reduction methods were combined to simulate a progressive failure in notched composite plates using a macro mechanics approach. Using the presented method, a progressive failu...
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Article
Uncertainty propagation in dynamics of composite plates: A semi-analytical non-sampling-based approach
In this study, the influences of spatially varying stochastic properties on free vibration analysis of composite plates were investigated via development of a new approach named the deterministic-stochastic Ga...
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Article
Verification of reinforcement isotropic solid model in conjunction with maximum shear stress criterion to anticipate mixed mode I/II fracture of composite materials
In the present research, a new criterion based on maximum shear stress (MSS) theory is developed for fracture investigation of orthotropic materials under mixed mode I/II loading. The crack is assumed to be em...
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Article
Investigation of Low Thrust Optimal Orbital Transfer from LEO to GEO Considering Circular Orbits
In the present research, optimal control problem for low thrust spacecraft orbital transfer is investigated by combination of analytical method and Artificial Bee Colony (ABC) algorithm, which is a population-...
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Article
An automatic multi-objective optimization tool for the optimum design of a cracked pressure vessel with composite coating
This paper proposes an automatic multi-objective optimization tool for the optimum design of a cracked pressure vessel with composite coating based on the non-dominated sorting genetic algorithm (NSGA-II) and ...
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Article
Adaptive Fuzzy PID Control Strategy for Spacecraft Attitude Control
In this paper, a novel adaptive fuzzy proportional–integral–derivative (AFPID) controller is designed for geostationary satellite attitude control. In order to design the AFPID controller, first a fuzzy PID (F...
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Article
Mixed-mode I/II fracture criterion for crack initiation assessment of composite materials
This paper presents a mixed-mode I/II fracture criterion to investigate the crack initiation in orthotropic materials in which the crack is directed along fibers. The minimum strain energy density criterion is...
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Article
Verification of a micro-mechanical approach for the investigation of progressive damage in composite laminates
In this paper, micro-damage mechanics (MIDM) and macro-damage mechanics (MADM) are employed to study the progressive damage in composite laminates. Firstly, a novel method for progressive damage modeling of co...
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Article
A new macro-mechanical approach for investigation of damage zone effects on mixed mode I/II fracture of orthotropic materials
In this paper a new criterion for fracture investigation of orthotropic materials with cracks under mixed mode I/II loading is presented. In this fracture criterion, orthotropic material will be considered as ...
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Article
Bi-level optimization of laminated composite structures using particle swarm optimization algorithm
This paper presents an efficient bi-level optimization technique to obtain the optimal stacking sequence for symmetric composite structures. The proposed approach involves two levels of modeling and optimizati...
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Article
Investigation of composite coating effectiveness on stress intensity factors of cracked composite pressure vessels
The use of composite coating is among favorite reinforcement methods for repairing cracked pressure vessels. In the present study, the effects of mechanical properties and geometry of composite coatings on Str...