scholarly journals MODIFIED INTEGRATION ALGORITHM IN THE STRAIN SPACE FOR RATE AND TEMPERATURE DEPENDENT ELASTO-PLASTIC CONSTITUTIVE MODEL

2008 ◽  
Vol 22 (09n11) ◽  
pp. 1243-1248 ◽  
Author(s):  
SANG-SOON CHO ◽  
HOON HUH
Keyword(s):  
Constitutive Model ◽  
Accuracy Assessment ◽  
Constitutive Relations ◽  
Fem Analysis ◽  
Temperature Dependent ◽  
Model Accuracy ◽  
Order Accuracy ◽  
Integration Algorithm ◽  
Strain Space ◽  
Raphson Method

This paper is concerned with modified integration algorithm in the strain space for rate and temperature dependent elasto-plastic constitutive relations in order to obtain more accurate results in numerical implementation. The proposed algorithm adopts both the 2-stage Lobatto IIIA with second-order accuracy and the iteration procedure using the Newton–Raphson method to enfoce consistency at the end of the step. The algorithm enables to consider the convective stress rates on the yield surface in the strain space in the numerical integration of the constitutive model. Accuracy assessment using the isoerror maps and FEM analysis of the adiabatic shear band is carried out in order to demonstrate the accuracy of the proposed algorithm.

scholarly journals Issues Related to Parameter Estimation in Model Accuracy Assessment

2013 ◽  
Vol 18 ◽  
pp. 1969-1978 ◽  
Author(s):  
Thomas C. Henderson ◽  
Narong Boonsirisumpun
Keyword(s):  
Parameter Estimation ◽  
Accuracy Assessment ◽  
Model Accuracy

Model accuracy assessment

2013 ◽  
pp. 469-554 ◽  
Author(s):  
William L. Oberkampf ◽  
Christopher J. Roy
Keyword(s):  
Accuracy Assessment ◽  
Model Accuracy

Rapid mapping accuracy assessment using low-cost UAV and open-source Structure from Motion

2020 ◽  
Vol 52 ◽  
pp. 55-61
Author(s):  
Ettore Potente ◽  
Cosimo Cagnazzo ◽  
Alessandro Deodati ◽  
Giuseppe Mastronuzzi
Keyword(s):  
Open Source ◽  
Structure From Motion ◽  
Accuracy Assessment ◽  
Low Cost ◽  
Mapping Accuracy ◽  
Rapid Mapping ◽  
Source Structure
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