Orthotropic mode II shear test fixture: Iosipesque modification

Khansari, Nabi Mehri; Farrokhi, Ahmadreza; Mosavi, Amir

doi:10.5267/j.esm.2019.4.003

Cited by 8 publications

(2 citation statements)

References 60 publications

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“…These energy release rates are defined based on density and shape of the porous materials. For overall circular porous (Figure 4), critical energy release rate is mentioned as follows in the Equation 2 (Fakoor and Khansari, 2018;Khansari et al, 2019aKhansari et al, , 2019b:…”

Section: Theoretical Concept For Porous Micromechanical Modelingmentioning

confidence: 99%

Mixed-modes (I/III) fracture of aluminum foam based on micromechanics of damage

Khansari

Aliha

2023

International Journal of Damage Mechanics

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Nowadays, foam structures have several applications in industries. Basically, discontinuities such as pores cause complications in evaluating the mechanical and fracture behavior. In other words, understanding the multi scale of porous cells in cracked foams can play a significant role in fracture prediction. The present research proposes an analytical approach based on the experimental concept of damage in which the behavior of cracked metal foam was investigated under mixed-mode I/III (tensile and out-of-plane) fracture. In this method, pores in foam are modeled as circular and elliptical defects. In this context, mechanical properties and crack inclination angle are obtained based on loading and configuration of pores. Dispersion of circular and elliptical discontinuities determines the overall modulus and crack inclination angle trajectory based on the experimental results, pure mode I SIF were occurred on (0°) and pure mode III were obtained at (62°) loading angle. The aluminum foams were produced and prepared according to the edge notch disc bend (ENDB) test method to obtain the onset of fracture initiation ( KIc and KIIIc) and trajectory of cracked foam body. The results demonstrated that analytical approach, based on circular pore distribution, had a good agreement with experimental results. Moreover, the results indicated that SIF in mode I and mode III had the most agreement with the experimental results at angles of 0° and 62°, respectively.

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Section: Theoretical Concept For Porous Micromechanical Modelingmentioning

confidence: 99%

Mixed-modes (I/III) fracture of aluminum foam based on micromechanics of damage

Khansari

Aliha

2023

International Journal of Damage Mechanics

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“…Where ̅̅̅ denotes the normalized firing strengths. In the fourth level integration algorithm, the calculation of a consequence if-then rule is applied that was suggested by previous study [102][103][104][105][106][107][108][109][110][111][112][113].…”

Section: ̅̅̅ = ∑( )mentioning

confidence: 99%

Sensitivity Study of ANFIS Model Parameters to Predict the Pressure Gradient with Combined Input and Outputs Hydrodynamics Parameters in the Bubble Column Reactor

Mosavi¹,

Shamshirband²,

Chau³

2019

Preprint

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Intelligent algorithms are recently used in the optimization process in chemical engineering and application of multiphase flows such as bubbling flow. This overview of modeling can be a great replacement with complex numerical methods or very time-consuming and disruptive measurement experimental process. In this study, we develop the ANFIS method for mapping inputs and outputs together and understand the behavior of the fluid flow from other output parameters of the bubble column reactor. Four inputs such as x coordinate, y coordinate, z coordinate, and air superficial velocity and one output such as pressure gradient are considered in the learning process of the ANFIS method. During the learning process, the different number of the membership function, type of membership functions and the number of inputs are examined to achieve the intelligent algorithm with high accuracy. The results show that as the number of inputs increases the accuracy of the ANFIS method rises up to  almost for all cases, while the increment in the number of rules has a effect on the intelligence of artificial algorithm. This finding shows that the density of neural objects or higher input parameters enables the moded for better understanding. We also proposed a new evaluation of data in the bubble column reactor by mapping inputs and outputs and shuffle all parameters together to understand the behaviour of the multiphase flow as a function of either inputs or outputs.

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Examining the effect of crack initiation angle on fracture behavior of orthotropic materials under mixed-mode I/II loading

Khaji

Fakoor

2022

International Journal of Solids and Structures

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Orthotropic mode II shear test fixture: Iosipesque modification

Cited by 8 publications

References 60 publications

Mixed-modes (I/III) fracture of aluminum foam based on micromechanics of damage

Mixed-modes (I/III) fracture of aluminum foam based on micromechanics of damage

Sensitivity Study of ANFIS Model Parameters to Predict the Pressure Gradient with Combined Input and Outputs Hydrodynamics Parameters in the Bubble Column Reactor

Examining the effect of crack initiation angle on fracture behavior of orthotropic materials under mixed-mode I/II loading

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