Numerical simulation and validation of distributed impact events

A precision impact test machine was designed and fabricated, and low velocity impact tests were conducted to experimentally determine the panel responses for each impact configuration. Overall, the numerical predictions correlated well with the experimental results. However, better correlation may be achievable if more complex hyperelastic material models are used for the rubber materials in the composite and the impactor, a more detailed representation of the test frame-distributed impactor interface is included, and a static preload is numerically included in the panel-to-support interface. Details of the panel configurations, general impact solution methods, numerical simulations, precision impact equipment and impact tests, and comparisons between simulation and test results are presented.