Structural simulation

MMI integrated structural simulation supports engineers in understanding the real behavior of parts before moving ahead with the production phase. Learn more about the benefits of our structural simulation services!


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The most relevant use case for TECHNYL® polyamides is for parts with demanding technical specifications in harsh environmental or chemical conditions from -40°C to more than +200°C, with complex mechanical loads. A complex design and development process then leads to the validation of the parts. Virtual prototyping and virtual testing play an increasingly important role in this process.

Here, MMI integrative mechanical simulation considering local glass-fiber orientation helps to evaluate and reliably prove the performance of the part by using numerical models for the parts and the polyamide material. Different part behaviors can be assessed, starting from calculations of local stresses and strains in the part, up to failure prediction.

And this can be done for different load cases, from static loads up to crash test simulation, thermal loads or fatigue.

Static and dynamic loadings/part type

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

MMI integrated structural simulation has been supporting engineers for more than 15 years, enabling you to understand the real behavior of parts before moving forward into the production phase. Helping avoid costly re-engineering and development iterations, the MMI process allows you to simulate fiber-reinforced parts made with TECHNYL® materials with unprecedented structural analysis accuracy. Reliable laboratory data enables you to fully exploit key material properties at the lowest cost, optimizing new designs and reducing material usage when redesigning existing parts.

Image: Virtual simulation model of MMI beam testing on the shaker

Structural simulation


Contact us

  • Request related Digimat material cards for your application
  • Request simulation support from our CAE experts
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DOMO‘s unique TECHNYL HUB service concept

DOMO’S MMI simulation support platform offers three main services to use the full potential of the TECHNYL® materials in the engineering process. Find out more on MMI integrated simulation concept.

Design optimization
Molding simulation