A Study on Yielding Function of Aluminum Honeycomb

This paper describes newly developed yielding function of aluminum honeycomb. Physical compression tests of aluminum honeycomb were performed and it was found that yielding stress of aluminum honeycomb highly depended up on direction of compression. Using these test data, a yielding function was newly derived as a function of volumetric change and angle of compression. The yielding function was introduced to MAT126 as an option. ODB frontal collision analysis result with the yielding function showed much better correlation with test results than with MAT126 without the option.