The tensile and shear failure behavior dependence on chain length and temperature in amorphous polymers

摘要：

　　The tensile and shear failure behavior dependence on chain length and temperature in amorphous polymers are scrutinized using molecular dynamics simulations.A wide range chain length of alkane is tested under tension and shear with various temperatures.We find that the broken rate (the broken bond number to all polymer chain number ratios) under tension and shear increases with increasing chain length and temperature.For a given chain length and temperature,the broken rates under shear are always higher than those under tension at a same large strain.For a given chain length,the tensile and shear stresses decrease with increasing temperature.We propose three typical fracture mechanisms to effectively elucidate the ductile fracture response based on the predominance of chain scission process.

关键词： Failure Chain length Linear polymers Molecular dynamics

作者: Junhua Zhao Timon Rabczuk

作者单位: Institute of Structural Mechanics,Bauhaus-University Weimar,99423 Weimar,Germany

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-10

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）