The
aim of this paper is to present a simple but comprehensive model for
the dynamical response of cracked rotor. The mechanical system is made
of two rigid bars connected with a nonlinear spring. The two bars
represent the uncracked parts of the rotor, and, the nonlinear spring
represents the cracked section. The breathing mechanism of the crack is
taken into account by considering special periodic variation of the
global stiffness of the system. The differential equations system is
soled using the harmonic balance method. Some possibilities for early
crack detection are established.

I am trying to analyse a beam subject to elevated temperature using smeared cracking model for concrete. Its sequentially coupled thermal stress analysis. I am a newbie as far as ABAQUS is concerned. Can someone please help me out with the smeared cracking model. I am not able to figure the tension stiffening properties that I need to enter. Please help.

Specific Coatings are used to further increase performance of titanium alloy parts at elevated temperatures. More specifically, Chromium Nitride (CrN) Coatings are designed to perform under conditions of high load and temperature. By using scratch testing it is possible to detect premature adhesive failure of the CrN coating in real-life applications. The test was performed at standard temperature but the test could also be performed at high temperature to better simulate the conditions to which the coating is subjected.