strain-hardening material

But the fracture coalescence path is winding under static loading, which is different from dynamic loading. So, the inertia effect of the fracture propagation is regarded as the main cause of the strength increase of the brittle material under slow to medium strain rate.

这与静载下岩桥处的贯通常通过分支裂纹拐折扩展、相连不同，这也是导致裂隙试样中低应变速率下强度增大（即速率效应）的主要原因。

It has been found out that the major culprits for the corrosion cracking are the concentration of harmful ions from caustic wash and material settlement and residue tension strain.

装置碱洗、物料沉积导致有害离子浓缩及设备存在残余拉应力是造成腐蚀开裂的主要原因。

The HCPCF F-P sensor is analyzed from strain effects induced by the pressure, the thermal expansion effect of material and thermo-optic effects, experimentally and theoretically.

主要从压强引起的应变效应、材料热膨胀效应、热光效应几个方面对HCPCF F-P干涉传感器进行了理论和实验分析。

Development of Material Testing Apparatus for Intermediate Strain Rate Test

中应变率材料试验机的研制

Tangent stiffness matrix for spatial concrete filled steel tubular ( CFST) pole element of geometric nonlinearity coupled with material nonlinearity under large displacement and large strain which was deduced with co-rotational coordinate method was proposed.

采用共旋坐标法导出钢管混凝土杆单元在大位移、大应变条件下的空间几何、材料非线性耦合的单元切线刚度矩阵；