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When is FEA analysis made?
Stress Analyses helps us estimate reliability of the design structure under any mechanical loads, define the level and the distribution of stresses and tensions in the structure and define deformations. Stress analysis also helps identify weak places and optimize the structure at an early stage of design so that the part will not fail in service.
Stress analysis is based on finite element analysis (FEA). FEA is a numerical method by which geometry is broken into a number of simpler shapes, or elements. Governing equations are then formulated on these elements, yielding a number of simple equations. The solution is performed using a computer. FEA is necessary to determinate the structural response of a part due to the conditions in which it is placed.
To make finite element analysis we need a three-dimensional model of the part, loads and boundary conditions. We can use any 3D CAD formats or make a 3D model from any drawings or sketches.
Types of Analysis
Standard Stress Analysis includes next types of analysis:
Static, Linear material, Distortions, Linear buckling
Advanced Stress Analysis includes next types of analysis: Nonlinear material
Some types of analysis are discussed below
Buckling is a type of structural behavior that exists when a thin object collapses under compression, quickly folding over onto itself. It is also known as elastic buckling.
Modal analysis is a type of analysis that calculates a structure’s natural frequencies and associated mode shapes (shapes of the deflection for each mode). Natural frequency is the frequency that a structure will naturally tend to vibrate at when excited by external dynamic.
Static is a type of analysis where time is not a factor in the process. Important quantities do not change over time.
Fracture is a type of failure exhibited by brittle materials, where there is no deviation from elastic theory until the point of failure.
Dynamic is a situation that is time-dependent.
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