1-20 of 84
Keywords: simulation
Close
Sort by
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2021
ISBN: 978-0-8031-7690-4
... in the prismatic plane in unirradiated conditions. In order to understand this phenomenon, discrete dislocation dynamics (DD) simulations, on complex configurations, have been performed. The input parameters of this code have been adjusted on molecular dynamics simulations. Then interactions between loops...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2020
ISBN: 978-0-8031-7692-8
... matter or uncontrolled contact of mating surfaces. The influence of such surface deformations on the bearing fatigue life has long been and still is a topic of research for bearing suppliers as well as for customers. In this work, the effect has been studied by a stringent simulation approach starting...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2017
ISBN: 978-0-8031-7647-8
... criterion is too stringent. Assemblies known to have satisfactory performance in the field do not meet the criterion under hygrothermal simulation. A recent addendum to ASHRAE Standard 160 replaced the simplified mold criterion with a state-of-the-art empirical model that describes mold growth and decline...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2015
ISBN: 978-0-8031-7529-7
... A three-dimensional finite element method (FEM) analysis of the hot extrusion process of Zr 2.5 %Nb was carried out. Simulations were carried out for bringing out the role of extrusion temperature, extrusion ratio, ram velocity, and profile of die on the extrusion process. The effect...
eBook Chapter
Series: ASTM Manuals
Publisher: ASTM International
Published: 2013
ISBN: 978-0-8031-7022-3
... processing fossil fuels biofuels feedstocks products heavy oil fluid catalytic cracking hydroisomerization unit design catalysts hydrogen advanced process control automated refineries computerization of refineries inspection and maintenance simulation corrosion quality control product...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2012
ISBN: 978-0-8031-7515-0
..., momentum, and solute transport equations, under laminar or turbulent flow conditions, during the remelting and cooling of a cylindrical ingot. An important part of the overall work is the careful validation of numerical simulations. For this purpose, specific sets of thermophysical data have been...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-7511-2
... within the accuracy of the measurements. The calculated joint loads are consistent with results from the literature. The forward dynamics model can be used to simulate consecutive ski turns. With parameter studies, the effects of slope, tracks, segment properties, ski-snow friction, and velocity...
eBook Chapter
Series: ASTM Manuals
Publisher: ASTM International
Published: 2010
ISBN: 978-0-8031-7018-6
... To prevent failure in nuclear components, one needs to understand the interactions between adjacent materials and the changes in their physical properties during all phases of reactor operation. Three examples from CANDU reactors are described to illustrate the use of simulations that imitate...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2010
ISBN: 978-0-8031-7505-1
... of the cooling load to off-peak times and lower the peak space cooling load of the building. From analyses of experimental data, it was found that it was very likely that the PCMs, once integrated into the walls, would “start” the phase change process from partially melted states. Currently used simulation...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2010
ISBN: 978-0-8031-7510-5
... reason is that no standard sample exists with known cleanliness properties. To solve this problem, we have developed a simulation approach. In this case, the different methods of cleanliness assessment are simulated on virtual samples. The inclusion populations are perfectly known in this kind of sample...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2009
ISBN-10: 0-8031-3409-6
ISBN: 978-0-8031-3409-6
... A computer model was developed to simulate consecutive ski turns. The model consists of a segment model for two skis and a single body for the skier. It was implemented in the multibody simulation software LMS Virtual.Lab. The interaction of ski and snow leads to a normal and a shearing force...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2007
ISBN-10: 0-8031-3406-1
ISBN: 978-0-8031-3406-5
... In this paper, a method is proposed to quantitatively estimate the decrease in threshold stress intensity factor (SIF) range due to high maximum SIF, that is observed for some materials in constant maximum SIF fatigue crack growth tests. The parameters for the simulation were inversely...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2007
ISBN-10: 0-8031-3491-6
ISBN: 978-0-8031-3491-1
... statistical properties of the methods. The results are reported here. They give a basis for comparison of steel heats that takes account of knowledge of the confidence level of the various measurement methods. bearing steel inclusions cleanness test method simulation Eric Hdnault 1 Journal...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2004
ISBN-10: 0-8031-3478-9
ISBN: 978-0-8031-3478-2
... prediction, including FORM/SORM (First/Second Order Reliability Method) and related “fast probability integration” methods. life prediction crack growth Paris equation probability statistics simulation Monte Carlo nondeterministic probabilistic joint conditional marginal multivariate...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2003
ISBN-10: 0-8031-2899-1
ISBN: 978-0-8031-2899-6
... This research focuses on modeling the microstructure of aluminum and simulating the initiation of fatigue cracks along grain boundaries using a cohesive zone model. Initial observations about the use of the cohesive zone model and the grain boundary response were made using simulations...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2003
ISBN-10: 0-8031-3467-3
ISBN: 978-0-8031-3467-6
... behavior cyclic hardening relaxation modeling simulation hysteresis loop Ernst E. Affeldt, ~Joachim Hammer, 2 and Lorena Cerdrn de la Cruz 3 Modeling of Deformation During TMF-Loading REFERENCE: Affeldt, E. E., Hammer, J., and Cerd~n de la Cruz, L., "Modeling of Deformation During TMF-Loading...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2003
ISBN-10: 0-8031-3465-7
ISBN: 978-0-8031-3465-2
... with the applied load. By choosing summable parameters for the components of D and by breaking down the load into incremental load changes Δ L this non-scalar approach enables the damage growth with an applied load to be described in terms of numerical methods for evaluation and simulation. Furthermore...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2003
ISBN-10: 0-8031-3456-8
ISBN: 978-0-8031-3456-0
... with the experimental results, it was found that the initial fatigue crack should occur at the point of maximum shear stress range near the contact edge, and would propagate in the direction of maximum tangential stress range. An analytical simulation of fretting fatigue crack propagation has been carried out...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2002
ISBN-10: 0-8031-2890-8
ISBN: 978-0-8031-2890-3
... used to animate this machine are typically created from combinations of both time histories and cycle counted data. Simulations are accelerated through the utilization of only those events that produce significant stresses on the structure. This paper describes the test bed and its vehicle interfaces...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2002
ISBN-10: 0-8031-2890-8
ISBN: 978-0-8031-2890-3
.... An example of a simple cantilever beam with two actuators connected to an analog servo-controller is described. It was possible to simulate the beam using four modes and two actuators with integration step sizes of up to 1 ms. The interaction between actuators could be demonstrated, and the system shows...