| Abstrakt: |
Due to the properties of magnetoelectroelastic intelligent material in this paper and the coupling response of these materials to environmental and systemic changes and due to the increasing development of nanotechnology and materials science, the purpose of this paper is to investigate the mechanical and thermoplastics behavior of cylindrical micro shells made of Magnetoelectrolastic material is targeted. Magnetoelectrolastic materials have a combination of properties of piezoelectric and magnetoelectric materials that these materials alone are not able to provide such properties. Therefore, due to the exceptional nature of these materials to convert a form of energy into another form, they are widely used in audio devices, ultrasound imaging in medicine, sensors, actuators, ultrasonic generators and electronic devices. Response characteristics of magnetoelectroelastic sensors under thermal loads can be useful in determining the best performance of devices emerging to use these materials as sensors and actuators. The purposefulness of such a material can be used to avoid the damaging effects of high temperatures. Targeted materials have the same thermal and mechanical properties but show heterogeneity. When modeling behavior, these materials are assumed to be functionally graded and heterogeneous, and the properties of the materials in them are constantly changing at a certain rate. Therefore, it can be said that such a material provides the creation of coupling behavior between elastic, electrical, magnetic, and thermal environments by considering the purposeful graduated structure. Thick cylindrical shell structures made of smart materials that are subjected to extreme heat fields at the internal and external borders are widely used in industries such as military, power plant, aerospace, nuclear reactor, oil, gas, and petrochemical, and on the other hand costwise a lot is spent to keep them in standard working condition. Therefore, the analysis of existing stresses in this type of structure to stabilize and increase their efficiency and useful life seems necessary. On the other hand, for these ceramic/polymer composite structures, a purposeful calibrated functional structure is proposed in order to eliminate the concentration and sudden change of stress at the junction of different layers, along with thermal resistance and low weight. Extraction of functionally calibrated shell differential equations using the first-order shear theory of shells made of magnetoelectroelastic intelligent material, using the stress-dependent theory of the modified stress pair with an independent longitudinal scale parameter, under arbitrary thermal conditions of displacement and thermal conductivity Boundaries are an aspect of innovation that is addressed in this study. [ABSTRACT FROM AUTHOR] |
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