It is important to know that FEA only gives an approximate solution to the problem and is a numerical approach to get the real result of these partial differential equations. These partial differential equations (PDEs) are complicated equations that need to be solved in order to compute relevant quantities of a structure (like stresses (\(\epsilon\)), strains (\(\epsilon\)), etc.) in order to estimate the structural behavior under a given load. Differential equations not only describe natural phenomena but also physical phenomena encountered in engineering mechanics.
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