Sld mchncs (ls knwn s mchncs f slds) s th brnch f cntnm mchncs tht stds th bhvr f sld mtrls, spclly thr mtn nd dfrmtn ndr th ctn f frcs, tmprtr chngs, phs chngs, nd thr xtrnl r ntrnl gnts.
Sld mchncs s fndmntl fr cvl, rspc, nclr, bmdcl nd mchncl ngnrng, fr glgy, nd fr mny brnchs f physcs nd chmstry sch s mtrls scnc. t hs spcfc pplctns n mny thr rs, sch s ndrstndng th ntmy f lvng bngs, nd th dsgn f dntl prsthss nd srgcl mplnts. n f th mst cmmn prctcl pplctns f sld mchncs s th lr–Brnll bm qtn. Sld mchncs xtnsvly ss tnsrs t dscrb strsss, strns, nd th rltnshp btwn thm.
Sld mchncs s vst sbjct bcs f th wd rng f sld mtrls vlbl, sch s stl, wd, cncrt, blgcl mtrls, txtls, glgcl mtrls, nd plstcs.