Results 141 to 150 of about 336,542 (173)

Improvement to method of equivalent thicknesses (MET) for calculation of critical strains for flexible pavements

International Journal of Pavement Engineering, 2016
AbstractThis paper presents the results of a sensitivity analysis carried out to compare the values of asphalt and subgrade strains (as well as associated fatigue and deformation lives) obtained with the method of equivalent thicknesses (MET) with those calculated with the BISAR software.
Paola Dalla Valle, Nick Thom
openaire   +1 more source

Compressive Creep of Virgin HDPE Using Equivalent Strain Energy Density Method

Journal of Materials in Civil Engineering, 2010
This paper presents a predictive model for compressive creep behavior of high-density polyethylene (HDPE) commonly used to manufacture polymeric piling and geosynthetics. Accelerated methods to predict the tensile creep of polymers are already available. In this paper, a method to predict the compressive creep of viscoelastic polymers is proposed based
Amir Bozorg-Haddad, Magued Iskander, Hsiao-Lun Wang   +2 more
openaire   +1 more source

A NEW METHOD FOR SIMULATING CONTACT FORCE BASED ON STATIC STRAIN EQUIVALENCE HYPOTHESIS

Journal of Sound and Vibration, 2002
Abstract In this paper, a strain-based contact force simulation method (abbreviated as strain-based method or stain method) for low-velocity impact is proposed on the basis of static strain equivalence hypothesis, in which a straine at the contact point of a structure is selected as a quantity to evaluate the contact force.
Y. ZHAO, J. JIANG, T. XIAO
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EQUIVALENCE BETWEEN ENHANCED ASSUMED STRAIN METHOD AND ASSUMED STRESS HYBRID METHOD BASED ON THE HELLINGER-REISSNER PRINCIPLE

International Journal for Numerical Methods in Engineering, 1996
For the title problem, we prove that not only the displacements but also the stresses of the enhanced assumed strain (EAS) elements calculated from the strains are identical to those of the corresponding hybrid-elements, at least at the Gauss integration points provided the spaces of the trial functions for enhanced assumed strains and for assumed ...
Yeo, ST, Lee, BC Lee, Byung Chai
openaire   +2 more sources

Structural Multi-Damage Identification Based on Modal Strain Energy Equivalence Index Method

International Journal of Structural Stability and Dynamics, 2014
In order to solve structural multi-damage identification problems, a damage detection method based on modal strain energy equivalence index (MSEEI) is presented. First, an accurate expression of modal strain energy (MSE) before and after damage occurs is given.
Hui Yong Guo, Zheng Liang Li
openaire   +1 more source

Strain-based equivalent temperature gradient in concrete pavement and comparison with other quantification methods

Road Materials and Pavement Design, 2016
It is well known that temperature along the depth of concrete pavement slabs is highly nonlinearly distributed. Utilising appropriate methods is crucial for quantifying an equivalent temperature gradient and the associated curling and stress calculations.
Xiang Gao, Ya Wei, Wei Huang
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The group equivalent reaction: An improved method for determining ring strain energy

Journal of Chemical Education, 1990
An algorithm for choosing adequate reference systems for ring strain energy by making a modification to the standard homodesmic reaction scheme.
openaire   +1 more source

Investigation on the bending behaviors of reinforced thermoplastic pipes using a strain energy equivalence method and a continuum damage numerical model

Polymer Composites, 2023
AbstractThis paper investigates the bending stiffness and progressive failure of reinforced thermoplastic pipes (RTPs) under bending loads, in which a theoretical method based on the strain energy equivalence of multi‐layered anisotropic cylinders, is proposed.
Xindong Ding, Wencheng Liu, Shuqing Wang, Jiarun Bu   +3 more
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Buckling collapse study for the carcass layer of flexible pipes using a strain energy equivalence method

Ocean Engineering, 2016
When a flexible pipe is subjected to high external hydraulic pressure, the innermost carcass layer serves to resist buckling and collapse. The maximum external pressure that the carcass layer can withstand before buckling collapse must be considered during pipe design. To study this problem, a strain energy equivalence method is proposed to transform a
Minggang Tang, Qingzhen Lu, Jun Yan, Qianjin Yue   +3 more
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Analytical Model and Testing Method for Equivalent Stress-Strain Relation of Anisotropic Thin-Walled Steel Tube

Journal of Testing and Evaluation, 2018
Abstract The deformation behavior of sheet metal is currently presented by the stress-strain curve, which gives the variation of flow stress as strain increases. The correlation between stress and strain is also used to characterize the material hardening under different stress states.
Shijian Yuan, Wencai Xie, Yanli Lin, Zhubin He   +3 more
openaire   +1 more source