Non-linear layerwise dynamic response analysis of sandwich plates with soft auxetic cores and embedded SMA wires experiencing cyclic loadings

Ghaznavi, A.; Shariyat, M.

doi:10.1016/j.compstruct.2017.03.012

Cited by 42 publications

(22 citation statements)

References 31 publications

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“…[56][57][58][59] The finite element models of the first and second leaf springs are composed of 9596 and 9772 elements, respectively. The CAD models of the components are created in SolidWorks software and imported in ABAQUS finite element analysis software.…”

Section: The Modified Progressive Damage Modelmentioning

confidence: 99%

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Generalized 3D high cycle fatigue criteria for multiscale bridging‐based progressive damage analysis of multilayer composite parts under random loads and material deterioration

Shariyat

Rahimi‐Ghozat

2019

Fatigue Fract Eng Mat Struct

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Two frameworks are employed to develop two distinct categories of multiaxial high cycle fatigue life assessment models for composite components experiencing general and random loading conditions. In this regard, the decay in the material properties with cycles is also taken into account. It is obvious that in multilayer components, the fatigue failure is a progressive process that may be accompanied by gradual or sudden changes in the material properties and, consequently, the resulting stresses. In addition to using the traditional progressive damage analyses, a new concept is proposed for tracing of the localized fatigue failures more accurately. It is postulated that generally, the stress components have distinct frequencies, phase shifts, and mean values that all vary with time in a random manner. The proposed fatigue criteria, especially, the equivalent-stress-based ones, are capable of predicting various fatigue failure modes, such as the fibre breakage, matrix cracking, and interfacial debonding. A special and comprehensive fatigue failure tracking and cycle counting algorithms that are capable of handling the mentioned general peculiarities are proposed. The proposed HCF criteria and the relevant fatigue life assessment algorithm are then implemented on a composite multilayer monoleaf spring of a realistic vehicle under a random field-measured loading condition, as a typical component, and the results are compared and the experimental results conducted by the authors, for accuracy investigations. The considered stochastic road inputs have been chosen on the basis of the consumption times and field measurements. K E Y W O R D Scomposite mono-leaf spring, deterioration of the material, experimental results, new 3D HCF criteria, progressive fatigue-damage, realistic random load inputs

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Section: The Modified Progressive Damage Modelmentioning

confidence: 99%

“…The elements use the reduced integration technique to preclude the shear locking phenomenon. [56][57][58][59] The finite element models of the first and second leaf springs are composed of 9596 and 9772 elements, respectively. The finite element mesh of the mentioned models is depicted in Figure 4.…”

Section: The Modified Progressive Damage Modelmentioning

confidence: 99%

Generalized 3D high cycle fatigue criteria for multiscale bridging‐based progressive damage analysis of multilayer composite parts under random loads and material deterioration

Shariyat

Rahimi‐Ghozat

2019

Fatigue Fract Eng Mat Struct

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“…The two most important properties are the shape memory effect (SME) and superelasticity. SME refers to the phenomenon that if an SMA is deformed, it regains its former shape upon heating [1][2][3]. Superelasticity refers to the phenomenon of an SMA undergoing a large amount of inelastic deformation and recovering its shape after unloading automatically without heating [4,5].…”

Section: Introductionmentioning

confidence: 99%

Multi-Step Prestressing with Hybrid SMA Wires

2020

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Prestressing force is induced in reinforced concrete (RC) structures to improve their load-carrying capacity. Generally, the prestressing strand of an RC structure is tensioned using a hydraulic jack, which decreases its workability. In this study, we evaluate the application of prestressing force by using a shape memory alloy (SMA), as has been actively studied in civil engineering. Experiments were conducted to measure the multi-stepwise prestressing force introduced in a hybrid SMA wire composed of two different types of SMA wires. The experimental parameters were determined based on the combinations of the SMA wires and the heating temperatures. The results of the experiments show that the prestressing force was induced in a sequence. The magnitude of the prestressing force generated by the hybrid SMA wire was equal to the sum of the prestressing forces generated by the NiTi50 and NiTi90 SMA wires. In conclusion, this study verified the applicability of the proposed concept of multi-stepwise prestressing by using hybrid SMA wires. Further research is required to measure the effect of prestressing by locally heating the center of a girder with the aim of expanding the applicability of this concept.

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“…For nonlinear dynamic analysis of a sandwich plate embedded with shape memory alloys, Dehkordi et al [41] presented a new mixed layer-wise model. A sandwich plate with auxetic core and composite face sheet embedded with shape memory alloys was studied by Ghaznavi and Shariyat [42] and nonlinear behavior of the plates was discussed. They realized that the auxetic core has notable effect on transverse deflection of sandwich plates.…”

Section: Introductionmentioning

confidence: 99%

Static analysis of sandwich plates embedded with shape memory alloy wires using active strain energy tuning method

Akhavan-Rad

Kheirikhah

2019

J Braz. Soc. Mech. Sci. Eng.

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In this study, static analysis of sandwich plates with flexible core and composite face sheets embedded with shape memory alloy (SMA) wires in the face sheets is conducted. Third-order plate theory is used to model face sheets, and quadratic and cubic functions are assumed for transverse and in-plane displacements of the flexible core. Continuity conditions of transverse shear stresses at the interfaces between face sheets and core and the zero transverse shear stresses conditions on the upper and lower face sheets are satisfied. Also, transverse flexibility and transverse normal strain and stress of the orthotropic core are noted. The SMA wires are placed in the laminated composite face sheets. Constitutive equation of the SMA wires is employed for modeling their behavior. Nonlinear equations of motion and boundary conditions of sandwich plates are derived using Hamilton's principle. The nonlinear governing equations of the simply supported sandwich plates under uniform and sinusoidal transverse loads are solved based on Navier's method. The effect of activating embedded SMA wires on bending behavior of composite sandwich plates are investigated using the active strain energy tuning method. The Liang's constitutive model is employed to obtain the SMA wires recovery force. The obtained results show that activating SMA wires causes a decrease in the deflection and stresses in these plates.

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Non-linear layerwise dynamic response analysis of sandwich plates with soft auxetic cores and embedded SMA wires experiencing cyclic loadings

Cited by 42 publications

References 31 publications

Generalized 3D high cycle fatigue criteria for multiscale bridging‐based progressive damage analysis of multilayer composite parts under random loads and material deterioration

Generalized 3D high cycle fatigue criteria for multiscale bridging‐based progressive damage analysis of multilayer composite parts under random loads and material deterioration

Multi-Step Prestressing with Hybrid SMA Wires

Static analysis of sandwich plates embedded with shape memory alloy wires using active strain energy tuning method

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