ITER, ANSYS, CEA, iteration, RJH, RCCM, CATHARE, IRSN, EDF, APRR, énergie nucléaire, bureau d’etude, simulation, dispositif, irradiation, séismologie, thermomecanique, transfer thermique, nuclear, nuclear energy, nuclear power plant, nuclear reactor, nuclear engineering, nucléaire France, nucléaire définition, nucléaire énergie fossile, nucléaire civile, nuclear fusion, nuclear acid, nuclear power trio, engineer, engineer data, engineer electrical, engineer jobs, engineer design process, engineer tf2, case study case study example, naval, naval ship, naval news, naval groupe, naval group cherbourg, naval groupe ollioules, naval group news, naval energies, naval craft, CFD, Open source, build, marine, industry process,

Structural mechanics (FEA)

FEA

The numerical simulations in structural mechanics aim at studying the rigidity (through the computation of the stresses) and the instabilities (through the computation of the deformations) of structures and components subjected to various mechanical actions (stress, pressure, temperature, acceleration, sinusoidal or random excitation …).

Sizing criteria

Mechanical dimensioning is carried out using specific rules established by theory and feedback based on the type of application. These rules are laid down in design and construction codes such as EUROCODES, RCC-M, CODAP, or ASME. Sizing can be done analytically or numerically depending on the complexity of the structures to be studied.

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Our vision

G-MET Technologies proposes to perform mechanical and thermomechanical dimensioning calculations. Sizing is based on a conservative approach. The safety factors and the resistance criteria are dependent on the normative codes used (RCC-M, CODAP, EUROCODES …). Complex designs use finite elements method to determine stresses and strains induced by mechanical/fluid or thermal loading. Assemblies are generally dimensioned analytically using worksheets. In order to optimize computation time, the coupling of beam/shell, shell/solid or sometimes beam/solid can be used.

Linear and non-linear static and transient analyzes

Fatigue

Modal, spectral, harmonic analysis

Our Skills in FEA

Buckling analysis

Thermomechanical

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Thermomechanical

  • Strong coupling

The method of resolution can take into account the coupling between thermal and mechanics by the simultaneous analysis of temperature and strain. This is called a strong coupling which is relatively heavy in computation.

  • Weak coupling

In the case where thermal and mechanical problems are uncoupled (material properties not very dependent on temperature or heat contribution due to mechanical strains negligible), it is advisable to adopt a weak coupling resolution consisting in the initial determination of temperature field and then evaluation of stresses/strains generated by this temperature field.

Seismic Calculations

G-met Technologies performs seismic sizing calculations for all types of industrial equipment, special machines or nuclear irradiation devices.

The design under seismic loading concerns the mechanical resistance of structural elements, their assemblies (welds, bolts) and their anchorages to civil engineering.

There are several seismic design methods used in the industry, including: 

  • The simplified static analysis method consisting of applying uniform acceleration at the peak of the spectrum to the structure. Depending on the type of structure, this method is not always conservative [1]. Thusly, a multiplicative coefficient of 1.5 is often used.
  • The spectral modal analysis method consists of determining the eigenmodes of the structure and then performing the spectral response by combining the eigenmodes (SRSS or CQC for example).
  • The transient analysis method, which, unlike the two previous ones, is concerned with the temporal response of the structure under the effect of seismic loading and not only with an estimate of the maximum forces induced. This method is much heavier in the calculation.

(1) Seismic calculation – Non-conservatism of the spectrum’s calculation “peak” –  Philippe MAUREL 2010.

ITER, ANSYS, CEA, iteration, RJH, RCCM, CATHARE, IRSN, EDF, APRR, énergie nucléaire, bureau d’etude, simulation, dispositif, irradiation, séismologie, thermomecanique, transfer thermique, nuclear, nuclear energy, nuclear power plant, nuclear reactor, nuclear engineering, nucléaire France, nucléaire définition, nucléaire énergie fossile, nucléaire civile, nuclear fusion, nuclear acid, nuclear power trio, engineer, engineer data, engineer electrical, engineer jobs, engineer design process, engineer tf2, case study case study example, naval, naval ship, naval news, naval groupe, naval group cherbourg, naval groupe ollioules, naval group news, naval energies, naval craft, CFD, Open source, build, marine, industry process, ITER, ANSYS, CEA, iteration, RJH, RCCM, CATHARE, IRSN, EDF, APRR, énergie nucléaire, bureau d’etude, simulation, dispositif, irradiation, séismologie, thermomecanique, transfer thermique, nuclear, nuclear energy, nuclear power plant, nuclear reactor, nuclear engineering, nucléaire France, nucléaire définition, nucléaire énergie fossile, nucléaire civile, nuclear fusion, nuclear acid, nuclear power trio, engineer, engineer data, engineer electrical, engineer jobs, engineer design process, engineer tf2, case study case study example, naval, naval ship, naval news, naval groupe, naval group cherbourg, naval groupe ollioules, naval group news, naval energies, naval craft, CFD, Open source, build, marine, industry process,
ITER, ANSYS, CEA, iteration, RJH, RCCM, CATHARE, IRSN, EDF, APRR, énergie nucléaire, bureau d’etude, simulation, dispositif, irradiation, séismologie, thermomecanique, transfer thermique, nuclear, nuclear energy, nuclear power plant, nuclear reactor, nuclear engineering, nucléaire France, nucléaire définition, nucléaire énergie fossile, nucléaire civile, nuclear fusion, nuclear acid, nuclear power trio, engineer, engineer data, engineer electrical, engineer jobs, engineer design process, engineer tf2, case study case study example, naval, naval ship, naval news, naval groupe, naval group cherbourg, naval groupe ollioules, naval group news, naval energies, naval craft, CFD, Open source, build, marine, industry process,

G-MET Technologies is a consulting firm specialized in numerical simulations applied to computational fluid dynamics (CFD), structural mechanics, and heat transfers​. In order to know more about us or to get in touch please visit our contact page or click on the button below.

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