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DOMO’s material models for mechanical simulation

Matching material models and mechanical load case is essential for reliable results and to optimize computation time. Thus, the material models for our TECHNYL® grades correspond to a variety of load cases. When prediction of local failure is needed, a pseudo-grain-based failure criteria (FPGF) allows detailed insight into the loading of the material and the likelihood of exceeding the glass-fiber orientation-dependent material limits.

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Static and dynamic loadings / part type

Use the form below to select between static and dynamic loadings and then choose the part type. We offer the material model types:

Static loadings

Dynamic loadings

Typical examples of application and test conditions including failure

  • Structural parts like mounts, supports and fixation
  • Covers or caps with gasket or external loads​
  • Pump housings, radiator end tanks, pipes under pressure​

Recommended material model including effect of temperature and moisture:

  • Elasto-plastic with permanent deformation and prediction of failure: – EP_FPGF
  • For parts in contact with automotive glycol-based coolants, DOMO offers data on material aging.

Recommended material model including effect of temperature, moisture and coolant aging:

  • Elastic or elasto-plastic with permanent deformation including plasticization and aging phenomena: EP_FPGF with aging

Parts under constant high loads with relaxation and retardation

  • Vessels under pressure
  • Sealing compression behavior in the long term
  • Leakage prediction
  • Self-tapping screws
  • Engine mounts
  • Fan/shrouds interaction

Recommended material model including effect of temperature and moisture:

  • Visco-elastic long-term model: CREEP

Parts with short-term highly dynamic crash loads

  • Airbag housing during airbag inflation
  • Front end modules
  • Oil pan stone impact in engines
  • Seat structures during vehicle crash
  • Ski bindings

Recommended material model including effect of temperature and moisture:

  • Strain-rate dependent elasto-plasticity with failure (short-term): SREP_FPGF

Parts with vibration or cyclic loads and analysis of vibration and damping characteristics

  • Visco-elastic behavior (short-term): VE

Parts under cyclic vibration fatigue loads 

  • Consider effect of alternate loading, with frequency and load ratio, for elastic and visco-elastic behavior: Fatigue E and VE

 

Parts under thermo-mechanical loads during heating and cooling cycles with thermal dilatation and warpage

Typical parts:

  • Differential assembly part warpage due to thermal loading
  • Leakage prediction
  • Hybrid assemblies, over-molded parts under thermal load
  • Self-tapping screws
  • Behavior of assemblies with long-time deformation under thermal loading

Recommended material model including effect of temperature and moisture:

  • Thermo-elasto-plastic behavior with failure: TEP_FPGF
  • Thermal-Strain-Rate dependent Elasto-Plastic behaviour with failure: TSREP_FPGF

Parts under cyclic vibrational fatigue loads 

  • Engine mounts
  • Brake pedals
  • Brackets
  • Furnitures, door handles, hinges
  • E-motor mount and other e-mobility structural parts

Recommended material model including effect of temperature and moisture:

  • Visco-elastic behavior (short-term): VE

Available material models

See our full overview of model availability for each application, type of loading and test condition here: 

Recommended material model: 

Elasto-plastic with permanent deformation and prediction of failure

⇒ EP_FPGF 

Recommended material model: 

Consider effect of alternate loading, with frequency and load ratio, for elastic and visco-elastic behavior

⇒ Fatique

⇒ VE

Recommended material model: 

⇒ TEP_FPGF and TSREP_FPGF

Recommended material model

Visco-elastic behavior (short-term)

⇒ VE

Recommended material model

Elastic or elasto-plastic with permanent deformation including plasticization and aging phenomena

⇒ EP_FPGF with ageing

 

Recommended material model

Strain-Rate dependent elasto-plasticity with failure (short-term)

⇒ SREP_FPGF

Recommended material models: 

⇒ EP_FPGF

⇒ TSREP_FPGF

⇒ CREEP

Video: Explaining DOMO's material models

Besides classic elasto-plastic mechanical models, DOMO offers a range of unique material laws for our PA6 and PA66 TECHNYL® glass fiber reinforced materials. 

 

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Contact our dedicated team now: 

  • Request related Digimat material cards for your application
  • Request simulation support from our CAE experts
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