# Fully coupled thermal-electrical-structural analysis

 A fully coupled thermal-electrical-structural analysis: is performed when coupling between the displacement, temperature, and electrical potential fields makes it necessary to obtain solutions for all three fields simultaneously; requires the existence of elements with displacement, temperature, and electrical potential degrees of freedom in the model; allows for transient or steady-state thermal solutions, static displacement solutions, and steady-state electrical solutions; can include thermal interactions such as gap radiation, gap conductance, and gap heat generation between surfaces (see Thermal contact properties); can include electrical interactions such as gap electrical conductance (see Electrical contact properties); cannot include cavity radiation effects but may include radiation boundary conditions (see Thermal loads); takes into account temperature dependence of material properties only for the properties that are assigned to elements with temperature degrees of freedom; neglects inertia effects; and can be transient or steady state. The following topics are discussed:
 Related Topics Defining an analysis Fully coupled thermal-stress analysis Coupled thermal-electrical analysis In Other Guides *COUPLED TEMPERATURE-DISPLACEMENT Configuring a fully coupled, simultaneous heat transfer, electrical, and structural procedure

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