An anthropomorphic test device includes an abdomen component, a base member, and a resilient flange coupled to and extending from the base member. The base member has opposing inner and outer surfaces and peripheral edge, with the inner surface defining a first cavity. The resilient flange includes opposing flange inner and outer surfaces and a connecting flange peripheral edge surface, with the flange inner surface defining a second cavity and with the second cavity extending from and open with the first cavity. The abdomen component is partially contained within the first and second cavity and coupled to the pelvis and resilient flange such that a first portion of an outer surface of the abdomen component is engaged with the inner surface of the base member and such that a second portion of the outer surface of the abdomen component received is resiliently retained by the resilient flange.