Full Description

This work is an outgrowth of previous PVRC work, which defines the problems and issues involved in assessing stress results from three-dimensional (3-D) finite element analyses (FEA) in terms of the ASME Boiler and Pressure Vessel Code stress limits in the design by analysis Section III (Class 1, NB) and Section VIII, Division 2. The initial project presented six short-term recommendations, four areas for additional consideration, and a number of issues requiring long-term research. The current project addresses four areas of consideration: (1) the relation between failure mechanisms and the ASME Code stress categories, (2) the appropriate stresses for each category, (3) the appropriate locations for assessing each stress category, and (4) the appropriate stresses for obtaining the membrane plus bending stresses. Although the relationships are interrelated, they are developed individually and then synthesized. To enhance understanding of the four areas of consideration, 11 geometries are defined and evaluated through discussion and finite element results. Each of the four areas of consideration is discussed in detail and two-dimensional (2-D) axisymmetric and 3-D example geometries are presented. Recommended Code guidance is presented in a set of seven "Recommended Guidelines," which Sections VIII and III of the Code may use to update appropriate portions of their codes.

Product Details

Published: 1998 Number of Pages: 147 File Size: 1 file , 11 MB