Virtual Bicycle Test Centre

SAFE AND RELIABLE BICYCLE

It is the one which fulfils the international quality standards documented in:

ISO:

 ISO 4210 – Safety requirements for bicycles (Superseded: EN 14764 – city and trekking bicycles, EN 14766 – Mountain bicycles, EN 14781 – Racing bicycles)

 EN 14872 – Accessoires for bicycles

American:

 ASTM F2273 – Standard Test Methods for Bicycle Forks

 ASTM F2274 – Standard Specification for Condition 3 Bicycle Forks

 ASTM F2711 – Standard Test Methods for Bicycle Frames

 16 CFR 1512 – Requirements for bicycles

Above standards describe in details the requirements how bicycle and individual parts shall be design and which tests shall fulfill to assure durability and safety.

An example of bicycle parts test is shown.

During testing various service loads are simulated like: standing on the pedals, cyclic jumping, braking, impact and crash loads. The most common form of frame failure is fatigue failure. Cyclic loads cause initiation and propagation of fatigue cracks, especially in the notch regions like weld toe & root. Depends on the bicycle type (mountain, racing, city) different tests are required to verify the design.

The virtual bicycle tests are conducted with the use of dedicated engineering software for advanced finite element analysis which ensure good agreement with the test.

VKB Tech offers FEA services including:

 Structural analysis with material non-linearities and contact phenomena

 Fatigue analysis of steel, aluminium ,composites components and welds

 Impact analysis – fork and frame impact test

 FEA and modelling of composites components like carbon-fibre (CFRP, CRP, CFRTP) frames and forks

The application of special modelling technique of weld joints (submodeling) allowing us to accurately predict stress amplitudes at weld toe/root, that is where usually fatigue cracks starts. Knowing the stress range and material fatigue data we can accurately predict durability performance at the early design stage and efficiently improve the design to avoid potential issue during real testing.

DESIGN OF CUSTOM BICYCLE FRAME

You have a frame design or a concept, but you don’t know whether your frame is strong enough. We can test it in our virtual lab by conducting strength and durability tests according to ISO 4210-6 standard. We create FE model based on delivered CAD geometry file (.igs or .stp) or 2D drawings/sketches. Within few days you will get an answer whether your frame will perform well during services and whether and how improve the design.

Please contact us for more information or if you wish to talk to us about a specific project.

We support the R&D project of innovative and lightweight agricultural machines

We are using advance engineering simulations to test and verify many design concepts of agricultural machines without building prototypes. We deliver essential data for the designers to make correct decision about concept selection for further development. We are showing opportunities to improve design, reduce the weight and increase durability. We support R&D projects of lightweight sprayer booms, mainframes and tillage tools.

If you would like to know more about our services for agricultural machinery industry or want to receive an offer, please contact us.