The invention relates to an applicator assembly system for applying pressure to a structure. An applicator assembly (602) for applying pressure to a composite structure (601) includes an external frame (614), an applicator casing (610) disposed substantially within the external frame (614), and an applicator (612) disposed substantially within the applicator casing (610). The applicator casing (610) includes a first membrane (616), and a first jamming material (618) disposed within the first membrane (616). The applicator (612) includes a second membrane (622), and a second jamming material (624) disposed within said second membrane (622).