... 27 07 2022 12 12 2022 design plastic material Ramos formulation viscoelasticity waterhammer Cavitation piping systems, consequent upon abrupt changes in the flow conditions, poses significant challenges to designing engineers. In fact, this phenomenon may be encountered...

... Mech. , 227 ( 3 ), pp. 777 – 793 . 10.1007/s00707-015-1493-13 [19] Triki , A. , 2018 , “ Dual-Technique Based Inline Design Strategy for Water-Hammer Control in Pressurized-Pipe Flow ,” Acta Mech. , 229 ( 5 ), pp. 2019 – 2039 . 10.1007/s00707-017-2085-z [20] Trabelsi...

... designate the discrete cavity volumes predicted at the current time-step and at 2 Δ t time-steps earlier, respectively, and 0.5 ≤ ψ ≤ 1 corresponds to a weighting factor [ 34 , 35 ]. Additionally, the perfect gas law for an isothermal evolution of the cavity is discretized as (7...

... behaviors, which are equally embedded in the design stage of hydraulic systems. Accordingly, this paper examined these last parameters to provide relevant information on the entire design key parameters. The numerical solver used the Method of Characteristics for discretizing the extended one-dimensional...

... rate for the VMP method being considerably faster. Later, Farshi and Bidabadi [ 83 ] devised a method for the optimum design of rotating disks by accounting for creep in the disk. This method involved the creep solution by Jahed and Bidabadi [ 82 ], along with an optimization technique...

...J. Christopher; B. K. Choudhary Additive creep rate model has been developed to predict creep strain-time behavior of materials important to engineering creep design of components for high temperature applications. The model has two additive formulations: the first one is related to sine hyperbolic...

... . Manuscript received November 24, 2017; final manuscript received May 8, 2018; published online June 18, 2018. Assoc. Editor: San Iyer. 24 11 2017 08 05 2018 Elevated temperature analysis Fabrication Metals Design Non-metals Submerged arc welding is preferred with most...

..., an austenitic heat-resistant HR3C (ASME TP310NbN) steel was developed for metal creep resistance. As the designed life time of a typical thermal plant is 150,000 h, it is very important to predict long-term creep behavior. In this study, a three-state variable continuum damage model (CDM) was modified...

...Chandan Pandey; Manas Mohan Mahapatra; Pradeep Kumar; N. Saini Creep strength ferritic/martensitic modified 9Cr-1Mo-V-Nb (P91) steel also designated as ASTM A335 and P92 steel are used for piping, cladding, ducts, wrappers, and the pressure vessel in Gen IV nuclear reactors. In the present...

..., and when reducing loads, its resilience can compensate loss of gasket stress. In this case, the stress on sealing surface of gasket remains stable so that the leakage rate can keep in a stable range. Because of its unique structure in design, the inner contact stress of new MMC gasket increases...

...Jian-Guo Gong; Fang Liu; Fu-Zhen Xuan Fatigue design method for 2.25Cr-1Mo-V steel reactors in code case 2605 (CC 2605) is reviewed. Main factors such as the accelerating function of fatigue action, the cyclic frequency, the strain damage factor ( β ) related to the fatigue design curves...

... dimensional analysis has been proposed for estimation of the weld cooling time (t 8/5 ) for variable plate thicknesses. The proposed model is based on rotatable central composite designed submerged arc welding (SAW) experiments. The model considers material properties, weld parameters, and environmental...

... failure mode of an ellipsoidal head of steel containment vessel under internal pressure. First, a vessel was designed to measure buckling pressure and shape of the ellipsoidal head. Second, an experiment was successfully performed on an ellipsoidal head which has a diameter of 4797 mm, a radius-to-height...

... of software Design Reliability Qualification of software 06 12 2016 07 08 2017 Contributed by the Pressure Vessel and Piping Division of ASME for publication in the J OURNAL OF P RESSURE V ESSEL T ECHNOLOGY . Manuscript received December 6, 2016; final manuscript received August 7...

...Daniele Barbera; Haofeng Chen; Yinghua Liu; Fuzhen Xuan The linear matching method (LMM) subroutines and plug-in tools for structural integrity assessment are now in extensive use in industries for the design and routine assessment of power plant components. This paper presents a detailed review...

...Jian-Guo Gong; Qi-Wei Xia; Fu-Zhen Xuan Based on a tee joint, the simplified creep design methods of ASME code, elastic-perfectly plastic (EPP) analysis of Code Case N-861 (CC N-861) and the inelastic analysis by isochronous stress strain (ISS) curve, were evaluated and compared to nonlinear finite...

... Seismic analysis Design Reliability Qualification of software In a nuclear power plant (NPP), there are a lot of small-bore pipings, such as vent piping, drain piping, and instrument piping, which are connected to the main piping, such as the primary coolant piping, pumps, and tanks...

... V ESSEL T ECHNOLOGY . Manuscript received June 27, 2016; final manuscript received February 23, 2017; published online April 24, 2017. Assoc. Editor: Xian-Kui Zhu. 27 06 2016 23 02 2017 Elevated temperature analysis PVP materials Safety Design Reliability Due...

...Mohammad Shafinul Haque; Calvin Maurice Stewart The classic Kachanov–Rabotnov (KR) creep damage model is a popular model for the design against failure due to creep deformation. However, the KR model is a local approach that can exhibit numerically unstable damage with mesh refinement...

... element High pressure engineering Inelastic analysis Design Boundary element methods The in-vessel retention (IVR) strategy for most advanced nuclear power plants (NPPs) is adopted to keep the reactor pressure vessel (RPV) intact under severe accident (SA) of core melt. The so-called “IVR...