the analysis and simulation of structural behavior are complicated and expensive. the finite element method is an effective approach for analyzing structural behavior because it is easier to specify boundary conditions and loads than to specify the complex mechanical behavior of the component. in a finite element analysis, the component is modeled as a solid, using a mathematical function to approximate the behavior of the component. the mathematical function is called the shape function. the shape function determines the exact geometry of the component and provides the basis for the analysis. finite element analysis is an integral part of many other disciplines of engineering. it is an important part of structural analysis because it allows for a more accurate analysis of structural behavior. it is used in many areas of engineering. because of the importance of finite element analysis, many companies have developed computer software to perform finite element analysis.
a general-purpose finite element program is much easier to use than a specialty structural analysis software. the most basic finite element programs (such as the one shown to the right) are easy to use. the user interacts directly with the program. they do not need to learn special commands and symbols. this enables them to use a program quickly and effectively. some finite element programs can simulate simple mechanical behavior. the user can specify loads, boundary conditions, and other aspects of the analysis. they can also import other data, such as geometric and material data. these programs often have very simple user interfaces. most are not graphical. however, some of them can be used to perform a limited amount of analysis.
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