欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
合理选择输入杆、输出杆长度和合适的应变片贴片位置,以实现拉伸应力波。利用PBX压缩强度远大于拉伸强度的性质,不采用承压环,在反射式霍普金森拉杆（SHTB）上对采用与铝杆端面粘接的PBX动态拉伸样品进行动态拉伸性能测试。结果显示,TATB基炸药的动态拉伸强度,在30 s-1应变率下动态拉伸强度达到了13 MPa,远高于准静态下的拉伸强度7 MPa。采用扫描电镜对样品细微破坏形貌进行了观察,结果表明,由于动静态下裂纹不同发展方式和动态下温升使粘结剂发生了软化,准静态下的拉伸破坏模式和动态下的模式明显不同,准静态下是沿晶断裂和穿晶断裂共存,动态拉伸下属于粘结剂脱粘破坏。
英文摘要：
Through designing dynamic tensile sample of PBX,selecting length of input bar and output bar,placing strain gauge in proper position,improving experiment methods based on properties of PBX which compressive strength was greater than tensile strength,it was realized dynamic tensile strength in the reflected split Hopkinson press bar（SHTB）.It showed dynamic tests beared high tensile strength.Dynamic tensile strength of PBX attained 13 MPa in 30 s-1 strain rate while quasi-static tensile strength was only 7 MPa.Through observed by SEM,quasi-static tension failure was different with dynamic tension failure because crack had different expand methods and temperature rise induced binder soften.Destroyed model in quasi-static tension was transcrystalline fracture and intergranular fracture and it was binder debonded in dynamic tension.
同期刊论文项目
同项目期刊论文
Compressional punch loading test of a polymer bonded explosive simulant using digital image correlat
Simulation Studies of the Interfaces of Incompatiable Glycidyl Azide Polymer/Hydroxyl-Terminated Pol
Theoretical studies on the heats of formation,densities,and detonation properties of substituted s-t
Accurately Predicting the Density and Hydrostatic Compression of Hexahydro-1,3,5-Trinitro-1,3,5-Tria
Accurately predicting the structure, density, and hydrostatic compression of crystalline Beta-1,3,5,
Calculations of radiation characteristics of reflector antennas with surface deformation and perfora
A Micromechanical Model for Predicting Combined Damage of Particles and Interface Debonding in PBX E
Characterization of RDX-Based Thermosetting Plastic Bonded Explosive by Cone-beam Microfocus Compute
Anisotropic shock sensitivity for beta-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine energetic ma
Orientation-dependent Constitutive Model with Nonlinear Elasticity for Shocked beta-HMX Single Cryst
Multiscale analysis of particle size dependent steady compaction waves in granular energetic materia
Thermal Mechanical Anisotropic Constitutive Model and Numerical Simulations for Shocked beta-HMX Sin
Study on Fracture Behaviour of a Polymer-Bonded Explosive Simulant Subjected to Uniaxial Compression
期刊信息
位置：