Data acquisition and failure simulation of Metal Bumper for Heavy Commercial Vehicle

Paper #:
  • 2017-01-0381

Published:
  • 2017-03-28
Abstract:
This abstract report on data acquisition procedure followed for a critical metal bumper to be used for a commercial application and consequently the validation methodology and defining the target duration based on life of the vehicle. Covariance is considered to be a major phenomenon in proving ground data acquisition and it is be maintained less than 0.05. In this project, importance of covariance in data acquisition studied before simulation of acquired data. In addition to that, multiple testing conditions like uni-axial and bi-axial carried out to achieve failure. Proving ground tracks data is used for bi-axial vibration test and constant spectrum signal of 5 Hz to 40 Hz & 3g acceleration is used for uni-axial vibration test. Target hours for uni-axial test (Z direction) are arrived using pseudo damage calculation which helps a lot in accelerating the test duration. Strain gauges were installed in failure locations to compare field data and rig data as well as to calculate strain life. Failure was simulated in bi-axial vibration test.
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