Abstract: By considering the stress interaction between an inhomogeneity embedded in an elastic brittle-like solid and the preexisting microcracks (“Griffith cracks”) inherent to the solid, several puzzling ...

Abstract: A numerical method is proposed for a direct local determination of stresses in a general twisted and sheared cracked bar. Conceptually, the method employs the integral approach of the potential ...

Abstract: A detailed study of the plasticity and crack-tip blunting effects on toughening materials with rectilinear anisotropy is presented. The most important results are the prediction of the extent ...

Abstract: A multistage continuous extrusion process based on a new concept is described and studied. The billet is driven through a series of dies by the viscous drag of a fluid flowing along its ...

Abstract: The geometrical and material constraints which limit the quality of hydroforming products in regard to failure by wrinkling (buckling) and/or rupture (tensile instability) are investigated in a ...

Abstract: The concept of Maximum Drawing Ratio (MDR), supplementary to the well-known Limit Drawing Ratio (LDR), is defined, examined, and illustrated by experiments. In essence the MDR is reached when ...

Abstract: Limit-analysis procedures for time-dependent materials are utilized for assessing some essential technological parameters in high-speed strip rolling (i.e., the torque, the separation force, the ...

Abstract: The classical ironing process by which walls of cups (or cans, etc.) are thinned is hereby replaced by a new fluid-pressure assisted process. This “hydrostatic ironing process” has the advantage ...