...Takehisa Yamada; Mitsuru Ohata This study aims to propose the damage model based on of the mechanism for ductile fracture related to void growth and to confirm the applicability of the proposed model to ductile crack growth simulation for steel. To figure out void growth behavior, elastoplastic...

... the mechanical properties of the pipe. In this work, two-dimensional (2D) and three-dimensional (3D) finite element models (FEMs) of a large-diameter, heavy-wall API X80 LSAW pipe were established, and the stress distribution of the pipe was calculated to simulate the in-service gas transmission pipeline...

...-dimensional (3D) fracture simulation code, CRACK3D , are used to analyze the crack tunneling event (but not crack slanting) in the specimen. Results of this investigation suggest that the critical CTOD value (which is the fracture toughness) has a clear dependence on the crack-front stress constraint A m...

... were compared with the beach marks that were present in the fracture surface. A simulation study using the ray tracing method was carried out to model the ultrasonic wave propagation in the test specimen, and the results were compared with the experimental results. Figure 4a shows...

... . Manuscript received by the PVP Division, January, 2001; revised manuscript received November 2, 2001. Editor: S. Y. Zamrik. 22 July 2001 01 January 2001 02 November 2001 31 01 2003 pressure vessels steel carbon steel strain control fatigue fatigue cracks simulation water...

... continuum mechanics simulation joining processes heating elements 1/f noise finite element analysis A bolt is the most commonly used machine element when clamping machinery and structural members together. Different methods exist to tighten them. While most papers have been devoted to evaluate...

... (TDPRAs), has been used to generate the axisymmetric guided wave modes in hollow cylinders, and this is simulated by a finite element calculation. Unidirectional guided wave emission can be achieved by arranging a TDPRA’s parameters according to the principle of constructive and destructive interference...

... creep simulation pipe flow In recent years, the advance of trenchless techniques has reduced the interruptions to traffic and community in sewer pipeline rehabilitation by avoiding tedious and time-consuming dig-out operations. As in many cases, when the deteriorated sewer pipes are still...

... Determined Elastic Interaction Coefficients ,” ASME J. Pressure Vessel Technol. , 114 , pp. 439 – 443 . Weber, E. M., and Bibel, G. D., 1994, “Flange Bolt-Up Simulation Using 3-D Finite Element Modeling,” ASME PVP-Vol. 274, pp. 63–82. Goddard, D. L., and Bibel, G. D., 1994, “Bolt Preload Variation...

...Josette Devaux; Ge´rard Mottet; Jean-Michel Bergheau; Surender K. Bhandari; Claude Faidy This paper presents the state of the art and the progress made in the numerical simulation of the stress state in a complex multi-material structure, using not only sophisticated finite element tools, but also...

... closure were compared to existing formulations. Idealized test cases indicated that the numerical procedure is sound. Subsequent simulations of two-phase flow using realistic geometries and boundary conditions showed that the pressure distribution in the solid phase is fundamentally different for the Mohr...

...Xiang Ling; Shan-Tung Tu; Jian-Ming Gong Continuum damage theory has proven to be an effective tool in creep damage simulation. In order to establish some mechanical principles for life extension of components at elevated temperature, a numerical scheme based on the localized creep damage theory...

... in the literature in its ability to cycle the valves repeatedly and to measure the time-varying flow rates during operation. This dynamic testing provides much more insight into valve behavior than the single-pop or continuous flow tests commonly reported. The facility is additionally unique in its simulation...

... in the order of ε ˙ = 2000 s − 1 , a rate at which metals are also giving up their static properties. The aim of research at ISL is the construction of a fiber-reinforced sabot adapted for dynamic bearing. FE simulations support the construction process as well as allowing a detailed study of the mechanical...