solid propellantDICEquivalent Principle of Time-Temperature-Strain Ratestress relaxation testuniaxial constant tensile rate testdoi:10.1002/prep.201900114Xuan LvWei Yong ZhouZhi Bin ShenHui Ru CuiJohn Wiley & Sons, LtdPropellants, Explosives, Pyrotechnics...
Loading modeβ angle[°]Axial strain rate[s−1]Shear strain rate[s−1]Equivalent strain rate [s-1]Young's modulus[MPa]Shear modulus [MPa]Ultimate tensile strength[MPa]Ultimate shear strength[MPa]Fracture strain (axial)[-]Fracture strain (shear)[-]Repetitions Quasi-static tension-torsion 72...
This means that an increase in strain rate is nearly equivalent to a decrease in temperature. The strain rate sensitivity values are dependent on the strain rate range considered, as well as on the temperature and plastic deformation range chosen. The strain rate sensitivity decreases with ...
In fact, both the PP tape and the UHMW-PP fibre show similar performance on this graph, since UHMW-PP falls near the curve of equivalent performance for PP tapes. Using the design criteria described above, it can be seen that the PP tape used in this research would have a performance ...
modelsindescribingthe effectsofworkhardening,temperature,andstrainratearealsoanalyzedseparately.Theresultsshow thatthesemodelshavevariouscapabilitiesinthecharacterizationofdifferentaspectsofmaterialbe- haviors,buttheprecisionofpredictionrelieslargelyonthatofdescription.Differentmodelsshouldbe selectedconsideringthespecific...
aLet represent the ratio of the current equivalent plastic strain, , to the equivalent plastic strain on the limit curve evaluated at the current values of ; strain rate, ; temperature, ; and predefined field variables, : 让代表当前等效塑料张力的比,与等效塑料张力在极限曲线被评估在当前值; 变形...
analyzed large amounts of seismic data29 and found that 65% of the maximum load amplitude was the equivalent amplitude of the cyclic load. Therefore, the load amplitude of this test was \({\tau }_{e}=\) 0.65 \({\tau }_{max}\). Graded loading was used, and σmin remained constant...
Real-Time Temperature Prediction of Power Devices Using an Improved Thermal Equivalent Circuit Model and Application in Power Electronics As a core component of photovoltaic power generation systems, insulated gate bipolar transistor (IGBT) modules continually suffer from severe temperature s... Z Hu,M...
This is equivalent to the total delamination length. The total delaminated length was calculated by summing the upper delaminated length (LU) and the lower delaminated length (LL). The nominal strain, ε, in the PVB ligament for the single cracked specimens was calculated using Eq. (3). Fig...
According to Lemaitre's strain-equivalent principle (Lemaitre, 1984), the constitutive relationship of damaged material (D≠0) can be obtained from the constitutive equation of non-damaged material (D = 0), and the nominal stress in the relationship of non-damaged material can be replaced ...