Truck and Bus Design, Simulation and Testing

Optimize driving dynamics and durability, and improve driver and passenger comfort through closed-loop design simulation and verification

Although manufacturers of trucks and buses face challenges similar to those of automotive manufacturers, successive prototype testing is often not an option due to lower production volumes. By providing an integrated design, simulation and manufacturing environment, Siemens PLM Software helps engineers make decisions early in the development process by providing a closed-loop view between requirements, design and verification across disciplines and enables you to find the right balance between critical functional performance characteristics, including:

  • Driving dynamics
  • Noise, vibration and harshness (NVH)
  • Durability
  • Acoustics
  • Fuel economy
  • Energy management

Our simulation and testing tools enable complete virtual prototyping, as well as efficient model validation against physical prototype test results, so that you can refine and have complete confidence in your final design while reducing the number of physical prototypes.

Truck Simulation and Testing for Optimal Performance and Driver Comfort

Fuel costs and emission regulations are major considerations in the transportation business, and therefore fuel consumption is a major differentiator between your products and those of your competitors. Trucks typically have large diesel engines which can transport the heavy loads, and often truck manufacturers combine these engines with secondary energy sources for other functions, such as auxiliary hydraulic systems or powered lift gates. Siemens PLM Software solutions help you optimize the entire driveline and powertrain for efficient fuel consumption, and research and develop alternative power supply architectures for applications such as electric delivery or garbage trucks in urban environments. Our software offers dedicated 1D solutions and specialized model libraries so that you can compare truck design alternatives and to define the best parameters for efficient performance in the early stages of design.

Trucks are designed to carry heavy loads and operate on different road types in varying environmental conditions and duty cycles. In this context, driving dynamics and durability are critical attributes, directly related to the perceived quality of your product. We provide you all required 3D truck simulation and testing tools to analyze the behavior of the system even before the first prototype has even been made.

Cabin comfort is also an important differentiator. Truck drivers spend their entire workday in the cabin, so it is important for it to be a comfortable workspace. You need to provide an optimized HVAC system, and ensure that the cabin is well isolated from road vibrations as well as the noise of the large diesel engines. Our truck simulation and testing software helps you isolate structural vibrations, reduce engine noise, design the cabin panels for better noise isolation, and optimize the cabin for thermal comfort. Thermal comfort, including HVAC system functions, can be modeled and optimized in the early design stage using 1D solutions and dedicated model libraries. Noise and vibration comfort can also be optimized using one of the many 3D simulation techniques. This simulation can be complemented by advanced structural and acoustic testing, either for design verification or to add real-life data to the 3D models.

Bus Designs for a Comfortable Ride

Besides driving dynamics, bus manufacturers must offer all passengers a comfortable seat. It’s important to isolate certain low frequency vibrations that cause motion sickness from the bus compartment, and ensure that panels suppress most of the external noises from the road, wind and engine. For luxury buses and coaches in particular, a comfortable seat also means enjoying a well-designed, in-vehicle audio system, as well as an optimized HVAC system. Siemens PLM software offers simulation and testing solutions that help you optimize noise and vibration comfort at the seats, design audio systems for optimal speech intelligibility, and ensure thermal comfort.

The local governments who purchase buses for public transport often require new ecological and environmental standards for lower emissions and noise reduction. Bus manufacturers have to look into alternatives to the classic internal combustion engine, and make sure that the impact of their product on the environment is minor. Siemens PLM Software’s bus simulation and testing solutions help you research and design new, efficient powertrain architectures. Solutions are also available to help you meet pass-by-noise regulations.

Using virtual simulation and testing to make smarter design decisions today, you can create better products for tomorrow’s trucks and buses.

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