... objects are pipe flange connections tightened with aramid sheet gaskets. When a pipe flange connection is subjected to thermal load, the gasket stress usually decreases along unloading curves. The temperature dependency of gasket stiffness is considered by defining Young’s modulus in unloading E* , which...

...JianJun Chen; KeeBong Yoon; Shan-Tung Tu The creep behavior of a pressurized tank, which is assumed to be made of functionally graded materials, is studied in this paper. The elastic response under the internal and external pressures is first obtained when Young’s modulus obeys a power function...

... loads. The validity of the present analysis was checked by comparing the present results with those results available in literature. 25 01 2010 19 03 2010 15 10 2010 15 10 2010 buckling mechanical stability shear deformation shells (structures) Young's modulus...

... in an autofrettaged tube have been reported. It is still difficult to model the Bauchinger effect, which is dependent on the prior plasticity in an analytical solution. The reduced Young’s modulus during unloading affects residual stress distribution. However, until now this effect has not been considered in any...

... loading to the initial yield stress, is a measure of the magnitude of the BE. The aim of the present work is to quantitatively evaluate the influence of plastic deformation on other material properties such as Young’s modulus and Poisson’s ratio for gun barrel steel, thus extending the definition...

... modulus adjustment procedures described by Seshadri 6 , Marriott 8 , and Mackenzie and Boyle 10 are all examples of this approach. Good results have been obtained by starting with a uniform Young modulus E in the initial step, which is subsequently modified at each point (element) in the structure...

... received August 31, 1999. Technical Editor: S. Y. Zamrik. 24 November 1998 31 August 1999 crack-edge stress field analysis internal stresses plasticity Young's modulus elastoplasticity yield stress The crack problem of a semi-infinite sheet is one of the fundamental...