Commercial Vehicles

All modern commercial vehicles need to be reliable, cost-effective and environmentally friendly. TECOSIM assists truck, bus and van manufacturers in meeting such requirements at a low cost in a short space of time and in developing new solutions.

Our core expertise for the commercial vehicle industry

Crash simulation

TECOSIM simulates crash scenarios to show their effect on components and whole vehicles. In doing so, it calculates, analyses and simulates the energies and deformations produced by a crash and their effects on the structure. This delivers invaluable knowledge for new vehicle development, saves on costs and prototypes for real crash tests and reduces environmental impact.


Vehicle occupant safety

Occupant safety simulation is used to design and optimise vehicle modules which have an impact on driver and passenger injuries in a crash. Such modules include belt systems, dashboards, air bags, interior trim and seats. 


Computational fluid dynamics (CFD)

Numerical computational fluid dynamics (CFD) calculates phenomena which occur as gases and fluids flow over surfaces. Typical fields of use in the automotive industry include external aerodynamics, catalytic converters, ducting and brakes. 



During the early stages of structural component development, long before elaborate, expensive testing is possible, durability analyses are used to evaluate and enhance designs with regard to structural strength and, above all, cyclic resistance. This allows weak points to be identified and eliminated from a design at an early stage. This process often also reveals weight optimisation and minimises the number of necessary laboratory tests. 


Multi-body system simulation

Multi-body system simulation is primarily used for rigid body calculation for powertrains and chassis components as well as kinematic simulation of articulated joints and drives. The speed of multi-body system simulation enables complex modules such as entire chassis to be easily mapped and integrated into control circuits.


System simulation

System simulation is used to examine highly complex overall systems in which many sub-systems interact. Mapping and simulating such a system is a supreme discipline: the physical properties of all components and sub-systems which are interconnected with each other and exert influence on one another must be described in a mathematically correct way and their behaviour evaluated. It is essential not to lose sight of the overall system as a sum of all parts for all details. TECOSIM has specialised in 1D simulation.

NVH (Noise, Vibration, Harshness)

NVH calculations allow conclusions to be drawn on how to implement improvements regarding acoustics, vibrations and comfort. Typical fields of application include steering wheel shake, gear lever vibration and sound propagation in the passenger compartment. 



The use of different mathematical calculation methods identifies optimisation potential for individual components or component groups regarding their weight or other properties. Analysis results are incorporated into the development process just the once or as part of a continuous improvement process.
Typical fields of application in vehicle manufacture includes components in the powertrain, vehicle body and passenger compartment, or in overall structures. 


Coupled or multi-physics simulation

Depending on the project definition, it is often not sufficient to examine physical properties of components in isolation only. Wherever several physical phenomena are to be examined regarding their interaction with one another, this is referred to as multi-physics simulation. Findings established in this way often present a truer picture than separate studies of individual phenomena. Multi-physics simulations play an increasingly important role in all stages of a product’s life cycle, from the analysis of new material properties, their mapping in virtual material models and parameters, through to production process simulation and calculation of product resistance under the effect of flow.

Virtual benchmarking

Virtual benchmarking (TEC|BENCH) allows detailed comparisons with competitors’ full products or individual vehicle components and component assemblies. This method enables product development to be speeded up considerably while reducing costs at the same time. TECOSIM supplies an all-inclusive process with varying scope, depending on customer requirements.