scholarly journals An elastic–plastic constitutive model for ceramic composite laminates

2014 ◽  
Vol 66 ◽  
pp. 44-57 ◽  
Author(s):  
Varun P. Rajan ◽  
John H. Shaw ◽  
Michael N. Rossol ◽  
Frank W. Zok
Keyword(s):  
Constitutive Model ◽  
Composite Laminates ◽  
Ceramic Composite ◽  
Elastic Plastic

A New Micromechanical Elasto-Plastic Constitutive Model for Fiber-Reinforced Composite Laminates

2010 ◽  
Vol 654-656 ◽  
pp. 2459-2462 ◽  
Author(s):  
Hua Shan Zhang ◽  
Yi Xia Zhang
Keyword(s):  
Constitutive Model ◽  
Composite Laminates ◽  
Plastic Material ◽  
Material Behavior ◽  
Elastic Behavior ◽  
Matrix Elements ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Elastic Plastic ◽  
Reinforced Composite

A micromechanical elastic-plastic bridging constitutive model is developed in this paper for accurate representation of material behavior of fiber-reinforced composite laminates. In the bridging constitutive model, elastic behavior is represented by bridging matrix elements and interaction between the average stresses in matrix with those in fibers are included. A transient plastic bridging matrix is developed to describe accurately the elastic-plastic material properties of the fiber reinforced composites, and the effects of the material parameters of matrix and fiber on the bridging matrix elements have been accounted for. The proposed constitutive model is validated against experiment investigation.

Delamination Resistance of Two Hybrid Ceramic-Composite Laminates

2005 ◽  
Vol 80 (12) ◽  
pp. 3029-3037 ◽  
Author(s):  
Willard A. Cutler ◽  
Frank W. Zok ◽  
Fred F. Lange ◽  
Panos G. Charalambides
Keyword(s):  
Composite Laminates ◽  
Ceramic Composite ◽  
Delamination Resistance ◽  
Hybrid Ceramic ◽  
Two Hybrid

A Practical Saturated Sand Elastic-Plastic Dynamic Constitutive Model and Application

2012 ◽  
Vol 446-449 ◽  
pp. 1621-1626 ◽  
Author(s):  
Yan Mei Zhang ◽  
Dong Hua Ruan
Keyword(s):  
Constitutive Model ◽  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Stone Columns ◽  
Saturated Sand ◽  
Multidimensional Model ◽  
Excess Pore Water Pressure ◽  
Elastic Plastic ◽  
Excess Pore

A practical saturated sand elastic-plastic dynamic constitutive model was developed on the base of Handin-Drnevich class nonlinear lag model and multidimensional model. In this model, during the calculation of loading before soil reaches yielding, unloading and inverse loading, corrected Handin-Drnevich equivalent nonlinear model was adopted; after soil yielding, based on the idea of multidimensional model, the composite hardening law which combines isotropy hardening and follow-up hardening, corrected Mohr-Coulomb yielding criterion and correlation flow principle were adopted. A fully coupled three dimension effective stress dynamic analysis procedure was developed on the base of this model. The seismic response of liquefaction foundation reinforced by stone columns was analyzed by the developed procedure. The research shows that with the diameter of stone columns increasing, the excess pore water pressure in soil between piles decreases; with the spacing of columns increasing, the excess pore water pressure increases. The influence of both is major in middle and lower level of composite foundation.

A Second-Order Cell-Centered Lagrangian Method for Two-Dimensional Elastic-Plastic Flows

2017 ◽  
Vol 22 (5) ◽  
pp. 1224-1257 ◽  
Author(s):  
Jun-Bo Cheng ◽  
Yueling Jia ◽  
Song Jiang ◽  
Eleuterio F. Toro ◽  
Ming Yu
Keyword(s):  
Constitutive Model ◽  
Riemann Problem ◽  
Wave Structure ◽  
Solution Procedure ◽  
Second Order ◽  
Rarefaction Waves ◽  
Elastic Plastic ◽  
Yielding Condition ◽  
Nested Iterations ◽  
Von Mises

AbstractFor 2D elastic-plastic flows with the hypo-elastic constitutive model and von Mises’ yielding condition, the non-conservative character of the hypo-elastic constitutive model and the von Mises’ yielding condition make the construction of the solution to the Riemann problem a challenging task. In this paper, we first analyze the wave structure of the Riemann problem and develop accordingly aFour-Rarefaction wave approximateRiemannSolver withElastic waves (FRRSE). In the construction of FRRSE one needs to use an iterative method. A direct iteration procedure for four variables is complex and computationally expensive. In order to simplify the solution procedure we develop an iteration based on two nested iterations upon two variables, and our iteration method is simple in implementation and efficient. Based on FRRSE as a building block, we propose a 2nd-order cell-centered Lagrangian numerical scheme. Numerical results with smooth solutions show that the scheme is of second-order accuracy. Moreover, a number of numerical experiments with shock and rarefaction waves demonstrate the scheme is essentially non-oscillatory and appears to be convergent. For shock waves the present scheme has comparable accuracy to that of the scheme developed by Maire et al., while it is more accurate in resolving rarefaction waves.

Multi-Axial Concrete Models for Nonlinear Analysis

2014 ◽  
Vol 1065-1069 ◽  
pp. 2099-2103
Author(s):  
Hu Qi ◽  
Yun Gui Li
Keyword(s):  
Constitutive Model ◽  
Nonlinear Analysis ◽  
Damage Model ◽  
Nonlinear Characteristic ◽  
Plastic Model ◽  
Elastic Plastic ◽  
Plastic Damage ◽  
Damage Constitutive Model

The most widely used multi-axial concrete models including elastic-plastic model and elastic plastic damage model are expounded and it is recognized that the elastic plastic damage model is more reasonable to reflect nonlinear characteristic of concrete. The development and application of elastic plastic damage model is comprehensively appraised and a practical elastic plastic damage constitutive model is established. Finally the dynamic trend of constitutive model of concrete development is introduced.

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