Difference Between Static FEA Analysis Services & Dynamic Analysis Services

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Finite Element Analysis (FEA) is one of the tools that has developed over the ages to extensively verify, validate and optimize the performance of ideas or products under structural loads and conditions.  FEA is very useful especially for validating the strength and stability of the design under actual loading conditions. Based on the loading conditions, there are two types of FEA analysis: Static analysis and dynamic analysis. Static stress analysis is arguably the most common type of structural analysis using the FEA method. Stress, strain and deformation of a component or assembly can be investigated under a range of load conditions to ensure that expensive failures are avoided at the design stage. The loads that are applied on the body are constant in nature and do not change over time. The term dynamic FEA relates to a range of powerful simulation techniques that can be applied to even complex engineering systems. Dynamic analysis is used to evaluate the impact of transient loads or to design out potential noise and vibration problems.

For static and dynamic analysis of their mechanical parts and components, various organizations outsource their FEA analysis to FEA companies and FEA modelling services which have specialized FEA consultants working in this area. The Static and Dynamic analysis of mechanical parts and designs plays a very important role for the efficiency and precision of the work performed by any engineer, including product development engineers, QA engineers, reliability engineers, design engineers, among others. The static fea analysis services analyse the effect of the static loads and deformations on the product and make sure the design does not fail under static loads or have stress concentrations which may affect the working of the part. On the other hand, dynamic analysis services analyse the effect of dynamic loads such as vibrations, harmonic responses, seismic loads and various others which are transient in nature. The dynamic analysis services make sure the mechanical part of the design does not fail under transient loads and optimize the design to improve its life cycle. 

The static analysis services carry out analysis to calculate the effects of constant loads on the structure ignoring the effects of inertia and shock that are commonly found when the applied loads change rapidly. Nevertheless, a static analysis may include constant inertia loads such as gravity, as well as loads that vary with time but which can be approximated to a static equivalent, as is the case of loads resulting from the wind which are defined by construction codes. The static analysis services carry out various analysis such as linear stress analysis, deformation analysis and thermal analysis. Also, it is important to highlight the fact that static fea analysis services help to determine different mechanical properties of the part, such as hardness requirements, traction resistance, compression resistance, shear resistance, sag resistance and torsion resistance.

The dynamic analysis services study the dynamic properties of the structures under vibrational excitation. The dynamic analysis services use the analysis to determine the vibrational characteristics of the part, such as natural frequencies, to evaluate the impact of the transient loads or to avoid noise and vibration problems with the design. Performing this kind of analysis during the design stage can prevent or reduce the need and the costs of trials on test benches. Moreover, the failures under dynamic loads can be dramatic, so significant, costly errors, as well as the loss of brand reputation can be avoided. The dynamics analysis services perform different types of analysis such as modal analysis, harmonic response analysis and transient dynamic analysis.  

To summarize, the static fea analysis services perform static analysis of the loads and find out as per the requirement of the client, whereas the dynamic fea analysis services mainly carry out the dynamic analysis due to transient loads and provide the reports to the client. Both the static and dynamic finite element analysis services can be used to “virtually prototype” designs before they are built, reducing risk, costs and speeding up time to market.