scholarly journals Calculation of Stress-Strain Curves of Fabric Reinforced Composite Materials using the Endochronic Theory of Plasticity

2017 ◽  
Author(s):  
Б.С. Сарбаев ◽  
◽  
А.Н. Барышев ◽  
Keyword(s):  
Composite Materials ◽  
Stress Strain ◽  
Endochronic Theory ◽  
Reinforced Composite ◽  
Theory Of Plasticity

A Multiscale Approach for Composite Materials as Multifield Continua

2007 ◽  
Vol 539-543 ◽  
pp. 2551-2556 ◽  
Author(s):  
Patrizia Trovalusci ◽  
Vittorio Sansalone ◽  
Fabrizio Cleri
Keyword(s):  
Composite Materials ◽  
Size Effects ◽  
Continuum Model ◽  
Lattice System ◽  
Numerical Analyses ◽  
Multiscale Approach ◽  
Stress Strain ◽  
Scale Parameters ◽  
Reinforced Composite ◽  
Internal Scale

A continuum model for composite materials made of short, stiff and tough fibres embedded in a more deformable matrix with distributed microflaws is proposed. Based on the kinematics of a lattice system made of fibres, perceived as rigid inclusions, and of microflaws, represented by slit microcracks, the stress-strain relations of an equivalent multifield continuum is obtained. These relations account for the shape and the orientation of the internal phases and include internal scale parameters, which allow taking into account size effects. Some numerical analyses effected on a sample fibre-reinforced composite pointed out the influence of the size and orientation of the fibres on the gross behaviour of the material.

scholarly journals Modeling of a Stress-Strain State of Detachable Connection in Details of Reinforced Composite Materials with Cea Method

2020 ◽  
Vol 70 (1) ◽  
pp. 17-28
Author(s):  
Dovhopolov Andrii ◽  
Nekrasov Sergiy ◽  
Zhyhylii Dmytro ◽  
Savchenko Yevheniy ◽  
Stupin Borys
Keyword(s):  
Composite Materials ◽  
Strain State ◽  
Performance Parameters ◽  
Stress Strain ◽  
Element Analysis ◽  
Threaded Joint ◽  
Stress Strain State ◽  
Reinforced Composite ◽  
Machine Parts ◽  
Main Thread

AbstractIn order to study the strength of the proposed rope threaded joint for machine parts made of reinforced composite materials, a modeling of a stress-strain state was conducted using the software of finite-element analysis LS-DYNA. Stress-strain state modeling was conducted for a rope threaded joint, affecting on the main performance parameters considered to be p – thread pitch (p = 4 mm), and t – thread depth (t = 1 mm). The main thread parameters taken for the model were up to the metric thread М6 (ISO 724:1993) parameters.

Investigations into Moisture Diffusion of Fiber Reinforced Composite Materials.

2018 ◽  
Author(s):  
Karla Rosa Reyes ◽  
Karla Rosa Reyes ◽  
Adriana Pavia Sanders ◽  
Lee Taylor Massey ◽  
Corinne Hagan ◽  
...  
Keyword(s):  
Composite Materials ◽  
Moisture Diffusion ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite

scholarly journals A General Temperature-Dependent Stress–Strain Constitutive Model for Polymer-Bonded Composite Materials

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1393
Author(s):  
Xiaochang Duan ◽  
Hongwei Yuan ◽  
Wei Tang ◽  
Jingjing He ◽  
Xuefei Guan
Keyword(s):  
Composite Materials ◽  
Constitutive Model ◽  
Model Parameters ◽  
Temperature Dependent ◽  
Stress Strain ◽  
Proposed Model ◽  
Single Temperature ◽  
Testing Data ◽  
Bonded Composite ◽  
Tension And Compression

This study develops a general temperature-dependent stress–strain constitutive model for polymer-bonded composite materials, allowing for the prediction of deformation behaviors under tension and compression in the testing temperature range. Laboratory testing of the material specimens in uniaxial tension and compression at multiple temperatures ranging from −40 ∘C to 75 ∘C is performed. The testing data reveal that the stress–strain response can be divided into two general regimes, namely, a short elastic part followed by the plastic part; therefore, the Ramberg–Osgood relationship is proposed to build the stress–strain constitutive model at a single temperature. By correlating the model parameters with the corresponding temperature using a response surface, a general temperature-dependent stress–strain constitutive model is established. The effectiveness and accuracy of the proposed model are validated using several independent sets of testing data and third-party data. The performance of the proposed model is compared with an existing reference model. The validation and comparison results show that the proposed model has a lower number of parameters and yields smaller relative errors. The proposed constitutive model is further implemented as a user material routine in a finite element package. A simple structural example using the developed user material is presented and its accuracy is verified.

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