TwokindsoffracturescanbeobservedintheSPH(smoothedparticlehydrodynamics)simulations,whicharethephysicalfractureandthenumericalfracture.Thephysicaloneexistsinreality,whilethenumericaloneisfictitious.Thispaperpresentstheeffectsofbothfracturesandproposesasimpleaddingparticletechniquetoa