Optimized configurations of the cantilever beam (a) standard topology optimization, total dynamic compliance 10.21 KJ; maximum displacement 4.60 mm; maximum stress 188.6 MPa; the maximum joint load appears on fastener near the root of the beam and is 128.5 N. (b) topology optimization with fatigue constraint, total dynamic compliance 9.169 KJ; maximum displacement 5.11 mm; maximum stress 130 MPa; the maximum joint load appears on fastener near the root of the beam and is 90.3 N.