Constitutive modeling of aluminum nitride for large strain, high-strain rate, and high-pressure applications

Research on aluminum alloy sheet thermoplastic deformation behavior based upon warm bulging test

“…By contrast, when using the method of pressure rate control, only relative pressure is needed. In fact, as for sheet bulging, there is necessary relation between strain-rate and pressure-rate, [18][19][20][21] in other words, pressure rate can also indicate forming speed, 11,16 which is of great meaning for sheet hydroforming technology.…”

Numerical Simulation of the Dynamic Performance of the Ceramic Material Affected by Different Strain Rate and Porosity

“…Figure2. Description of the JH-2 ceramic model [12] Figure3. Strength versus pressure for intact and damaged material [13] JH-2 model include a damage parameter that can describe the material from intact to yield which can be used to simulate damage.…”

Numerical and experimental studies of damage generation in multi-layer composite materials at high strain rates

“…The JH-2 model [4][5][6][7][8][9][10] was used to simulate the damage evolution and dynamic failure of the ceramic. This is a pressure and strain-rate sensitive material model which, although developed for ballistic impact velocity range, has been successfully applied to relatively low impact velocities [11,12].…”

“…The JH-2 model was proposed by Johnson and Holmquist [4,6,7] in order to improve the efficiency of a previous ceramic model which is referred to as JH-1. The constitutive behavior described by this model as follows.…”

“…(8) is an additional incremental pressure determined from energy considerations to include the dilatation effect after compression failure. Details on the JH-2 ceramic material model are described in the literature [4,6,7].…”