Marqueur

Specialists in Numerical Simulation and Test Engineering

Cash in white, powertrain (GMP), interior equipment: our teams have acquired their experience from the largest car manufacturers and suppliers. We deal with various themes, such as vehicle lightening, the use of hybrid and electric engines for the reduction of CO2 emissions, the optimisation of active and passive safety elements or NVH performances.

Body in white and openable

The body in white and the openings are the first elements of passive safety. They also have an impact on the NVH performance of the car and represent a significant potential for lightening. We regularly work with manufacturers, OEMs and materials producers (steel, aluminium and composite) to offer innovative structural concepts that improve the technical performance of cars while reducing production costs and the ecological impact of vehicles.

Chassis and suspension

The dynamic behaviour of a vehicle depends largely on its ground link. The undercarriage is a state-of-the-art technology offering multiple axes of development. It includes many active safety devices such as the ever more efficient regulation and driver assistance systems (ADAS). The tools at our disposal allow us to optimise the chassis to ensure safety and driving comfort while minimising power losses.

Motorisation

The development of a propulsion system is a very demanding area where many challenges must be met, from the reduction of pollutant emissions to the reduction of energy consumption while improving the mechanical performance. Our expertise in numerical simulation can provide the key players in this sector precise and reliable tools to develop and optimise the energy efficiency of thermal, electric or hybrid engines.

Other equipment

The number of pieces of equipment in a vehicle is very important, passive safety elements (airbags) or plastic elements such as dashboards, air ducts or tanks, all require advanced development phases. CIMES can intervene at all levels to optimise your equipment, from their mechanical strength to the acoustic and vibratory comfort of the passenger compartment to electromagnetic compatibility.

Our actions

Initial design and lightweight design

  • Research of innovative structural concepts
  • Feasibility multi-material parts (steel, aluminium, composites)
  • Welded, riveted, bolted or glued joints

Multibody dynamics

  • Vehicle dynamic behaviour
  • Driving safety and comfort
  • Subsystem analysis
  • Fatigue, vibrations

Crash and security

  • Crash on rigid and distortable barriers (ODB, MDB, Side Pole, SORB, Roof Crush)
  • Passenger and pedestrian safety
  • Airbag deployment
  • Windshield modelling
  • NVH simulations
  • Sustainability
  • Body stiffness
  • NVH and crash multi-criteria optimisation (topological and parametric)

CFD, external and internal aerodynamics, heat exchange

  • Coefficients of drag on vehicle
  • Radiator and thermal under-hood cooling performance
  • Air intake pressure loss
  • Exhaust treatment
  • Interior climate control
  • Thermal components: motor, viewing lights

Acoustics/Electromagnetism

  • Vibroacoustic simulation
  • Electromagnetic compatability (EMC)
  • Antenna positioning

Tests

  • Active and passive safety: braking bench, catapult, pedestrian impact bench
  • Comfort: semi-anechoic chamber, aeraulic bench
  • Climate ageing
  • Test follow-up
  • Correlation of test calculations

Respect of norms and standards

  • ECE standards
  • Passive and Active Safety
    New Car Assessment Progams (NCAP): Euro NCAP, US NCAP, IIHS, ANCAP, JNCAP, KNCAP
  • Pollution and emissions
    Euro standards