Improved method of stress determination by three-dimensional photoelastic modeling

1978 ◽  
Vol 14 (4) ◽  
pp. 412-414
Author(s):  
N. P. Blokh ◽  
A. V. Zubkov ◽  
V. P. Lelikov
Keyword(s):  
Three Dimensional ◽  
Stress Determination ◽  
Improved Method

Efficient Finite Element Modelling For Complex Shaft Couplings Under Non-Symmetric Loading

2005 ◽  
Vol 40 (7) ◽  
pp. 655-673 ◽  
Author(s):  
W. S Sum ◽  
S. B Leen ◽  
E J Williams ◽  
R Sabesan ◽  
I. R McColl
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Fretting Fatigue ◽  
Improved Method ◽  
Fe Modelling ◽  
Fatigue Assessment ◽  
Dimensional Finite Element ◽  
Symmetric Loading ◽  
Three Dimensional Finite Element ◽  
Key Aspects

A number of key aspects of the three-dimensional finite element (FE) modelling of spline couplings for fretting and fatigue assessment are discussed. The primary issue addressed is the development of an efficient and accurate modelling technique for non-symmetric shaft loading of the couplings, which is an important mode of loading for fretting fatigue assessment. An improved method is presented for implementing an axial modification of the contact geometry, commonly referred to as barrelling, which is also important for fretting fatigue assessment of splines.

scholarly journals An Improved Method for Three-dimensional Reconstruction of Protein Expression Patterns in Intact Mouse and Chicken Embryos and Organs

2007 ◽  
Vol 55 (9) ◽  
pp. 925-930 ◽  
Author(s):  
Jonas Ahnfelt-Rønne ◽  
Mette C. Jørgensen ◽  
Jacob Hald ◽  
Ole D. Madsen ◽  
Palle Serup ◽  
...  
Keyword(s):  
Expression Patterns ◽  
Simultaneous Detection ◽  
Three Dimensional ◽  
Computer Software ◽  
Improved Method ◽  
Intact Mouse ◽  
Chicken Embryos ◽  
Tissue Sections ◽  
Cellular Resolution ◽  
Dimensional Reconstruction

We have developed a wholemount immunofluorescence protocol for the simultaneous detection of up to three proteins in mouse and chicken embryos. Combined with Murray's clearing reagent (BABB) and microscope objectives with long working ranges and high numerical apertures mounted on a confocal microscope, cellular resolution can be obtained in depths offering the possibility of examining expression patterns in entire organs or embryos. Three-dimensional projections of the optical confocal sections can be computed with computer software allowing rotation around any axis. The protocol is robust and we find that most antibodies working on tissue sections also work with this protocol. This manuscript contains online supplemental material at http://www.jhc.org . Please visit this article online to view these materials.

scholarly journals An improved method of three-dimensional displacement field generation in mining areas with a single InSAR pair

2019 ◽  
Vol 52 (1) ◽  
pp. 493-503 ◽  
Author(s):  
Hongdong Fan ◽  
Binfan Wen ◽  
Jie Liu ◽  
Jiuli Liu ◽  
Jianfeng Yin
Keyword(s):  
Displacement Field ◽  
Three Dimensional ◽  
Improved Method ◽  
Mining Areas ◽  
Field Generation

CAD/CAE on the Frame of Vertical Type High-Pressure Grouting Machine

2012 ◽  
Vol 557-559 ◽  
pp. 2114-2117
Author(s):  
Zhi Cheng Huang
Keyword(s):  
High Pressure ◽  
Three Dimensional ◽  
Maximum Load ◽  
Structure Design ◽  
Improved Method ◽  
Ansys Software ◽  
Stress Strain ◽  
Structural Improvement ◽  
Solid Models ◽  
Pressure Grouting

The frame of a type of 4MPa vertical high pressure grouting machine was taken as the research objec. The three-dimensional solid models of main parts of the frame were established by using Pro/E software and transmitted to ANSYS software via IGES format. The distributions of stress, strain and displacement were investigated under the maximum load, and based on this calculation, the improved method of structure design has been presented and the results provide the theoretical basiss for the structural improvement. The analysis results can provide a reference for design of the frame pares, and have some general engineering and practical value.

Margin Assessment of AP1000 Loss of Flow Transient

2006 ◽  
Author(s):  
Edward L. Carlin ◽  
Peter A. Hilton ◽  
Yixing Sung
Keyword(s):  
Three Dimensional ◽  
Reactor Core ◽  
Nucleate Boiling ◽  
Improved Method ◽  
Margin Assessment ◽  
Reactor Coolant ◽  
Power Profile ◽  
Canned Motor ◽  
Reactivity Insertion ◽  
Coolant System

The Reactor Coolant System (RCS) of the AP1000 plant consists of two circulating loops. Each loop contains two canned motor Reactor Coolant (RC) pumps that have a rotating inertia to provide RCS flow coastdown if power to the pumps is lost. Westinghouse analysis of the complete loss of flow (CLOF) accident in support of the AP1000 design certification was based on the USNRC-approved traditional methodology applied to operating plants. The RCS response during the transient was predicted using the LOFTRAN code based on a reactivity insertion curve highly skewed to the bottom of the reactor core, but the calculation of Departure from Nucleate Boiling Ratio (DNBR) was performed assuming a top-skewed axial power profile. A more realistic margin assessment can be made by using an improved method similar to Westinghouse RAVE methodology recently approved by the USNRC. The improved method uses the three-dimensional kinetic nodal code SPNOVA coupled with the reactor core thermal-hydraulic code VIPRE-W for predicting the reactor core response during the CLOF transient. The improved method significantly improves margin predictions by generating core power distributions consistent with the trip reactivity changes for the DNBR calculation. The margin assessment showed that the improved method resulted in a 19% DNBR increase as compared to the traditional method for the AP1000 CLOF transient.

Estimation of tree growth losses caused by pest activity

1980 ◽  
Vol 10 (2) ◽  
pp. 176-182 ◽  
Author(s):  
A. J. Thomson ◽  
G. A. Van Sickle
Keyword(s):  
Tree Growth ◽  
Growth Rates ◽  
Growth Pattern ◽  
Three Dimensional ◽  
Slight Modification ◽  
Height Growth ◽  
Improved Method ◽  
Program Impact ◽  
Site Characteristics ◽  
Competition Effects

An improved method of quantitative evaluation of pest-caused reduction of tree growth is described. Radial and height growth rates were measured from discs along the bole of the tree, and growth losses were evaluated by a computer program (IMPACT). The method is independent of site characteristics or competition effects. Use of the method was demonstrated for growth losses in Pseudotsugamenziesii attributable to defoliation by Choristoneuraoccidentalis, and with slight modification it may be applied to a range of tree-pest systems. A three-dimensional graphical procedure was used to display the growth pattern.

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