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Simulative Investigation of Wheel Brakes in Terms of the Anchor Load and Pad Movement
Technical Paper
2011-01-2383
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In the research project between the Institute of Automotive
Engineering (FZD) of the Technische Universität Darmstadt (TUD) and
Continental Teves AG & Co. oHG a new modeling concept has been
developed. With the aim to enhance the current development process,
the brake caliper is modeled based on coupled rigid bodies
integrated into a nonlinear system model. Using an explicit
interface definition, the number of degrees of freedom is minimized
and the calculation of caliper performance is possible over a wide
range of parameters. Compared to models based on the Finite Element
Method (FEM), fully parameterized geometry from CAD is not
necessary, thus the caliper can be optimized for a variation of its
geometrical and physical parameters. With this modeling approach,
typical performance criteria such as caliper fluid displacement,
hysteresis, uneven pad wear and residual torque can be calculated
in a virtual bench test. Additionally, the pull-push-characteristic
and the tendency towards radial pad movement can be assessed. The
results are generated before assigning the design parameters in CAD
and are suitable to achieve frontloading in the development
process. In this paper, the basic approach and the experimental
validation regarding the force distribution between inner and outer
pad and also the radial pad movement are described. For the
validation a high-performance flywheel-dynamometer is used. The
tangential load and the pull-push-characteristic are measured with
strain gauges on the anchor arms. The inductive linear displacement
sensors gauge the radial pad movement. The results show the
development process of radial pad movement over time and the
sensitivity of different parameter variations.
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Authors
Citation
Haag, M., Fan, J., Winner, H., Ungethuem, U. et al., "Simulative Investigation of Wheel Brakes in Terms of the Anchor Load and Pad Movement," SAE Technical Paper 2011-01-2383, 2011, https://doi.org/10.4271/2011-01-2383.Also In
References
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