Reinforcement design for the anchorage of externally prestressed bridges with "tensile stress region"

2013 ◽  
Vol 11 (5) ◽  
pp. 383-397
Author(s):  
C. Liu ◽  
D. Xu ◽  
B. Jung ◽  
G. Morgenthal
Keyword(s):  
Tensile Stress ◽  
Stress Region ◽  
Reinforcement Design

Quantification of slip planes in the stem wood of Eucalyptus grandis

Holzforschung ◽  
2019 ◽  
Vol 73 (3) ◽  
pp. 269-275
Author(s):  
Jordão Cabral Moulin ◽  
José Tarcísio Lima
Keyword(s):  
Tensile Stress ◽  
Slip Plane ◽  
Microfibril Angle ◽  
Eucalyptus Grandis ◽  
Natural Occurrence ◽  
Plane Angle ◽  
Wood Fibers ◽  
Stem Wood ◽  
Stress Region ◽  
Slip Planes

AbstractThe objective of this work was to analyze the natural occurrence of slip planes (SPs) inEucalyptus grandiswood fibers in terms of their characterization, distribution in the stem and associations with other wood characteristics. A 28-year-oldE. grandiswas studied, whose stems were sampled in the base-top direction. The longitudinal compressive stress regions (LCompSR, in the inner part of the stem) and longitudinal tensile stress region (LTensSR, in the outer parts of the stem) were separately considered. The following parameters were measured: microfibril angle (MFA), slip plane angle (SPA), number of SPs per millimeter (SP mm−1), slip plane index (SPI) and the relative abundance of SP in the fiber. The SPAs differ only slightly between LCompSR (76°) and LTensSR (77°). The base of the stem, which supports a larger mass, contains the most SPs and the number of SPs decreases from the base to the top. In the LCompSR, the SPI reduction was from 21 to 8%, and in the LTensSR, from 18 to 7%.

Working Performance of Anti-Arch Segments on the Left Bank Slope of Xiangjiaba Gravity Dam

2014 ◽  
Vol 580-583 ◽  
pp. 2063-2070
Author(s):  
Qiu Jing Zhou ◽  
Peng Gao ◽  
Zhao Guang Gong ◽  
Hai Feng Li
Keyword(s):  
Tensile Stress ◽  
Gravity Dam ◽  
Left Bank ◽  
Gravity Dams ◽  
Bank Slope ◽  
Transverse Joint ◽  
Stress Region ◽  
Sliding Stability ◽  
Working Performance ◽  
Deformation Stress

The working performance of gravity dam with an anti-arch shape differs from that of conventional gravity dams. To understand the working performance of anti-arch segments on the bank slope of Xiangjiaba dam, linear and non-linear finite element methods were used to analyze the deformation, stress as well as the state of transverse joint and cracks during the operation period. The coefficient of anti-sliding stability of each dam segment and the safety degree of dam body were also calculated. The results show that under the conditions of non-grouting of transverse joints and well grouting of cracks, the deformation rules are consistent for all segments investigated and accord well with that of the conventional gravity dam. Both the dam heel and dam toe are subjected to compressive stress. In the cold seasons, there is a tensile stress region on the top of the dam body, where the tensile stress is smaller than the tensile strength. The transverse joints are opened, while the cracks are generally closed under compression and stable on the whole. The anti-sliding stability coefficient and the safety degree of each dam segment are above 3.0, which satisfies the design code.

Study of Magnetic Annealing on Magnetostriction in Grain-Oriented 3.2 % Si Steels

2004 ◽  
Vol 449-452 ◽  
pp. 129-132 ◽  
Author(s):  
Sang Yun Cha ◽  
I.B. Chudakov ◽  
Jong S. Woo ◽  
Jong Kweon Kim ◽  
Young Rae Cho
Keyword(s):  
Magnetic Field ◽  
Tensile Stress ◽  
Compressive Stress ◽  
Significant Role ◽  
Pulsed Magnetic Field ◽  
Magnetic Annealing ◽  
Electrical Steels ◽  
Surface Conditions ◽  
Stress Region ◽  
Three Samples

The effects of magnetic annealing on a magnetiostriction in commercial grain-oriented 3.2 at.% Si steels were investigated. A combined (constant+strong pulsed) magnetic field during the magnetic annealing played a significant role in reducing the magnetostriction. The reduction ratio in magnetostriction was greatly dependent on surface conditions such as whether it was a bare metallic, tension coated and laser-scribed surface for grain-oriented electrical steels. For all three samples, the effect of the magnetic annealing on reduction in maganetostriction is more clearly observed in the compressive stress rather than in the tensile stress region.

Failure of the Asphalt–Aggregate Interface under Tensile Stress: Insight from Molecular Dynamics

2021 ◽  
Vol 33 (3) ◽  
pp. 04021008
Author(s):  
Zhao Du ◽  
Xingyi Zhu ◽  
Feng Li ◽  
Siqi Zhou ◽  
Ziwei Dai
Keyword(s):  
Molecular Dynamics ◽  
Tensile Stress

Evolution of plasticity zones in vicinity of pores in steels under stress corrosion conditions

2020 ◽  
pp. 130-136
Author(s):  
A.N. Chukanov ◽  
V.A. Tereshin ◽  
A.E. Gvozdev ◽  
A.A. Shatul’sky ◽  
A.P. Navoev ◽  
...  
Keyword(s):  
Tensile Stress ◽  
Stress Corrosion ◽  
Structural Steels ◽  
Gas Pressure

Method for determining of the coordinates of the plasticity zones boundaries formed in the vicinity of pores under loading of cast and powder structural steels in contact with aggressive media is proposed. The effect of external tensile stress and gas pressure in pores is taken into account.

Visualization of Tensile Stress Induced Material Response at a Crack Tip in Polymers under Critical Load by NMR Imaging

2000 ◽  
Vol 33 (13) ◽  
pp. 4836-4841 ◽  
Author(s):  
P. Adriaensens ◽  
L. Storme ◽  
R. Carleer ◽  
D. Vanderzande ◽  
J. Gelan ◽  
...  
Keyword(s):  
Tensile Stress ◽  
Critical Load ◽  
Crack Tip ◽  
Nmr Imaging ◽  
Material Response
Sign in / Sign up

Export Citation Format

Share Document