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Importance of pipe arrangement to track the complicated
movement of a hose
 A
brake hose transmits the power generated when a brake pedal is depressed.
The essential factors required for the product are durability and
a low expansion rate to contain the expansion of the hose caused by
hydraulic pressure. As the brake hose is assembled to the body and
movable wheel parts (absorbers and brake calipers), it shows a complicated
relative movement, and a limited space to be attached also affects
the movement. Finding a better pipe arrangement based on precise understanding
of its complicated movement is our challenge in the development of
brake hoses.
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FEM and a robot to move a brake hose yield test results
more similar to actual movement in driving
 Simulation
technology is used to analyze the complicated movement of a brake
hose when considering pipe arrangement. In a traditional simulation,
there was a big difference in torsion rigidity between the evaluations
of simulation and actual driving, therefore we could not accurately
understand the movement in a three-dimensional way. TG introduced
a finite element method, FEM to include the nonlinear movement property
of a brake hose in track calculation. It improved analysis accuracy
and yielded results more similar to those in an actual driving evaluation.
TG also uses a robot to move the hose to understand the movement more
similar to that in an actual driving. Better analysis of the movement
has realized proper pipe arrangement in a shorter time, and contributes
to shorter development period. We will step up efforts to improve
the development processes of hose material and structure, so that
we will be able to solve the paradoxical problem of better durability
and lower expansion and earn greater reliability for our products.
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