...Qiaochu Li; Junhua Chen Buried gas pipelines in karst area are inevitably affected by the geotechnical activities, which is difficult to resist the permanent ground displacement caused by soil dislocation and surface damage. In this paper, abaqus finite element software has been used to establish...

...-directional cold expansion procedure to realize the homogenization of residual stress in the thickness direction of the cold expanded hole, thereby further improved antifatigue performance of cold expanded hole. For this aim, a series of finite element (FE) simulations were carried out to investigate...

... pressures are determined through finite element analysis (FEA). The bottom uplift subjected to design pressures are obtained, and the yielding pressure at the roof-shell and shell-bottom junctions are also determined. The specific gravity of the stored liquid is raised from 1.0 to 1.2 in this study. A new...

.... In this article, ADINA finite element software is used to establish a pipe-soil-fluid three-phase coupling model based on fluid–structure interaction (FSI), and the influence of the parameters of pipe, fluid and fault on the mechanical properties of cross-fault buried gas pipeline is studied. The model...

... evaluation. The results and discussion about fatigue evaluation of API 12F tanks are presented in this report. e-mail:  feng293@purdue.edu e-mail:  guzey@purdue.edu 04 11 2020 14 03 2021 09 04 2021 storage tanks API 12F fatigue life finite element rectangular cleanout...

... their bending stiffness is very small compared to membrane stiffness. The theoretical formulation is based on a combination of the finite element method and classical shell theory. For a perfect geometrical consistency, two semi-analytical finite elements, conical and cylindrical, are used to model axisymmetric...

.... Finite element models were created having nonlinear material properties and large deformation capabilities. Three different tank geometries with liquid height to tank radius aspect ratios of 0.67, 1.0, and 3.0 were selected representing broad, nominal, and slender tanks. These tanks were subjected to two...

... that the post-buckling rupture is only plausible to occur in the pipe wall on the tensile side of the wrinkled cross section under the increased bending. Based on the experimental results, a finite element (FE)-based numerical model with a calibrated cumulative fracture criterion was proposed to conduct...

... received January 22, 2018; final manuscript received July 8, 2018; published online August 31, 2018. Assoc. Editor: Kiminobu Hojo. 22 01 2018 08 07 2018 Finite element Boundary element methods Tubular heat exchangers (HEXs), as shown in Fig. 1 , find extensive use in nuclear...

... is considered, where two different attempts are made to investigate the RPV integrity during PTS loading by employing the deterministic and probabilistic methodologies. For the deterministic integrity evaluation, three-dimensional computational fluid dynamics (3D-CFD) and finite element method (FEM) simulations...

... received September 4, 2017; final manuscript received July 3, 2018; published online August 22, 2018. Assoc. Editor: Steve J. Hensel. 04 09 2017 03 07 2018 Finite element Fluid-structure interaction Boundary element methods Due to environmental concerns, scientists...

... models. The combined bending moment and pressure load ramping is also studied. Design by analysis finite element damage mechanics numerical methods are applied to investigate post first ply failure (FPF) and stress redistribution. The study shows that different loading combinations can give rise...

... al. [ 50 ] using results based on a finite element method (FEM) study. Gibson et al. [ 50 ] also showed that the results provided by closed end and plane strain conditions were similar. In the case of a thick-walled sphere, the mechanical boundary conditions only consist of whether the outer wall...

... Fatigue Finite element High pressure engineering Metals Safety Fracture prediction Boundary element methods Reliability Non-metals It is generally believed that buckling loads of pressure vessel components under various loading condition can be extremely sensitive to imperfection...

... in estimated fatigue lives. This uncertainty may be reduced by using a more mechanistic approach such as physics based three-dimensional (3D) finite element (FE) methods. In a recent paper (Barua et al., 2018, ASME J. Pressure Vessel Technol., 140(1), p. 011403), a fully mechanistic fatigue modeling approach...

... received November 15, 2016; final manuscript received July 6, 2018; published online August 2, 2018. Assoc. Editor: Reza Adibi-Asl. 15 11 2016 06 07 2018 Fabrication Finite element Safety Boundary element methods Reliability A number of bolts and nuts are used when clamping...

... normal load. The sample seat surface is manufactured by face turning a tubular part under radial stress and waviness is obtained after elastic relaxation. Modeling is performed on a three-dimensional finite element model of the assembly, composed of the plug, the sample seat, and its holder. The upper...

... these issues. Preliminary studies to design a practical high-frequency phased-array acoustic microscope probe were explored. A linear phased-array, comprising 32 elements and operating at 5 MHz, was modeled using PZFlex, a finite element method software. This phased-array system was characterized in terms...

... potentially induced in pipes, leading to pipe buckling and possible rupture. In this paper, the buckling behavior of X80 pipe is studied numerically with an emphasis on the effects of steel stress–strain characteristics. A rigorous mechanics-based nonlinear finite element (FE) model of a buried X80 pipe...

... of microwave technology as an input to a neural network [ 1 – 7 ]. Finite element Life extension NDE Property databases Safety Boundary element methods Reliability Resonance frequency data from 2.2 GHz to 2.5 GHz were collected for 108 test cases. These cases utilized various combinations...