def METHOD_NAME(self, card_count):
    ncards = card_count[self.type]
    if ncards:
        self.n = ncards
        float_fmt = self.model.float_fmt
        #: Element ID
        self.element_id = zeros(ncards, 'int32')
        #: Property ID
        self.property_id = zeros(ncards, 'int32')
        self.node_id = zeros(ncards, 'int32')
        self.coord_id = zeros(ncards, 'int32')
        self.mass = zeros(ncards, float_fmt)
        self.x = zeros((ncards, 3), float_fmt)
        self.I = zeros((ncards, 6), float_fmt)