Crack propagation of Mg-Li alloys by impact load
Under impact load,using energy estimation and updated finite element method,the crack propagation of Mg-Li alloys was studied,and the relations between high speed impact,time interval and crack propagation velocity were deduced.The effects of impact pattern characteristic parameters such as impact range and time interval on impact fatigue crack growth and propagation rates were discussed.The results show that with the development of crack length,the crack propagation rate along the central sample alloy swiftly increases to the maximum.Then,the crack of other parts has different rate variations.The calculation and simulation results fit well with the experimental ones,which verifies the validity of energy estimation and updated finite element analysis.Impact loading usually induces materials and accelerates the fatigue crack growth.
crack propagation Mg-Li alloys impact load finite element
QU Zhi-ming LIANG Xiao-ying ZHOU Xin-quan SHI San-yuan
School of Civil Engineering,Hebei Engineering University,Handan 056038,China State Key Laboratory of Coal Resource and Safe Mining,China University of Mining and Technology,Beij
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）