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Static Solver & Quasi-static Analysis 글 편집

RecurDyn's Static Solver allows the stable and accurate Static Equilibrium State calculations of both Rigid and RFlex bodies.

Based on the N-R Static solvers, RecurDyn's Static Solver can be used for FEA static analysis as well as quasi-static analysis using MFBD technology (referred to as FFlex Static).

FFlex Static can quickly and accurately perform static analysis of nonlinear MFBD models involving contacts.



  • By calculating the initial equilibrium state of a model such as vehicle or excavator in advance, the simulation speed and accuracy can be improved.
  • Total simulation time can be reduced by tuning a model through static analysis before dynamic analysis.
  • When the effect of inertia is small, the behavior of the model can be quickly observed using quasi-static analysis.
  • It is possible to investigate the system’s range of motion or the interference between bodies through static analysis.
  • RecurDyn's static solver can solve the equations of motion for static, quasi-static, and dynamic simulations using the same model.

FFlex Static

  • Structural analysis of flexible bodies can confirm deformation and stress in a static state.
  • Supports both static analysis and quasi-static simulation of an MFBD model considering not only self contact of FFlex body but also contact with other bodies.
  • When a deformed shape of a flexible body is required, it can be obtained by using static analysis or quasi-static simulation and extracting the results.

Application Examples of static / quasi-static simulation

Tensioned state can be obtained using RecurDyn static solver

<Calculation of tensioned state using static analysis >

Track link test using static analysis

<Track link test using static analysis​>

Structural analysis of a chassis​ using RecurDyn Static Solver

<Structural analysis of a chassis​>

Calculation of the Initial equilibrium state of a vehicle​ using static analysis

<Initial equilibrium state of a vehicle​>

quasi-static analysis using RecurDyn

<Behavior investigation using quasi-static analysis​>

MFBD Static Analysis using RecurDyn.gif

Quasi-static analysis is useful when the system operates at a relatively slow speed, minimizing the impact of acceleration and inertia. With quasi-static analysis, the transient behavior of the MFBD model can be quickly analyzed. Additionally, quasi-static analysis enables the determination of the system's equilibrium states under various conditions, including different force conditions or system postures.