.... Evidence was found on the hysteretic and viscoplastic behavior of amorphous silicon in nanoscratch that is also seen in indentation. Furthermore, it is found that this material is unstable under stress within small scales. Indications of phase transformation, (reverse) densification, and transition...

...C. W. Wu; G. J. Ma; H. S. Sun A mathematical programming solution based on finite element method is used to analyze wall slip of viscoplastic lubrication in a metal-rolling inlet zone. Slip velocity can be directly obtained by parametric quadratic programming without an iterative process between...

..., 2002) using an inverse analysis of the indentation test, the mechanical behavior of polymers is modeled with Young’s modulus for the elastic part and with the G’sell-Jonas’ law with an exponential strain hardening for the viscoplastic part. The strain hardening coefficient is the main characteristic...