Lightweight Threshing Rack under Multisource Excitation Based on Modal Optimization Method

Figure 14

The six modes of the vibration mode of the rack. (a) 1st-order mode (16.476 Hz). (b) 2nd-order mode (27.913 Hz). (c) 3rd-order mode (35.426 Hz). (d) 4th-order mode (45.523 Hz). (e) 5th-order mode (56.366 Hz). (f) 6th-order mode (58.634 Hz).

(a)

(b)

(c)

(d)

(e)

(f)