Strain rate dependent modeling of polymer matrix composites

Publisher: National Aeronautics and Space Administration, Glenn Research Center, Publisher: National Technical Information Service, distributor in [Cleveland, Ohio], [Springfield, Va

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  • Strain rate.,
  • Strain distribution.,
  • Polymer matrix composites.,
  • Peek.,
  • Fiber orientation.,
  • Impact loads.

Edition Notes

StatementRobert K. Goldberg, Donald C. Stouffer.
SeriesNASA/TM -- 1999-209433., NASA technical memorandum -- 209433.
ContributionsStouffer, Donald C., NASA Glenn Research Center.
The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL15559332M

5. Department of Defense-Army Research Office: Dynamic Failure of Aluminum and Polymer Matrix Composites at High Strain Rates (PI: $,, ). 6. Department of Defense-Air Force Office of Scientific Research: Microstructure-Sensitive Fatigue Design for . R. Frassine and A. Pavan, Viscoelastic effects on the interlaminar fracture behaviour of thermoplastic matrix composites: I. Rate and temperature dependence in unidirectional PEI/carbon-fibre laminates, Composites Science and Technology, 54, 2, (), ().Cited by: This the third volume of six from the Annual Conference of the Society for Experimental Mechanics, , brings together 56 chapters on Time-Dependent Constitutive Fracture and Failure. It presents early findings from experimental and computational investigations on Time Dependent Materials.   Carbon fiber (CF)/polymer composites are a transformative class of high-performance, lightweight material, where high aspect ratio carbon fibers 1,2,3,4,5 reinforce a polymer matrix (i.e., a Cited by:

Resistance to time-dependent deformation of polymer-based nanocomposites Sat, - Jinglei Yang The broad engineering applications of polymers and composites have become the state of the art due to their numerous advantages over metals and alloys, such as lightweight, easy processing and manufacturing, as well as acceptable. A polymer (/ ˈ p ɒ l ɪ m ər /; Greek poly-, "many" + -mer, "part") is a large molecule, or macromolecule, composed of many repeated subunits. Due to their broad range of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that. The matrix of the nanocomposite was polystyrene (PS) which was reinforced with carbon nanotubes (CNTs). To study the mechanical strain energy d issipation of nanocomposites, we measured the ratio of loss to storage modulus for different CNT concentrations and alignments. CNT alignment was achieved via hot-drawing of PS-CNT. The continuous development of constitutive equations for the finite strain deformation of glassy polymers has resulted in a number of sophisticated models that can accurately capture the materials' intrinsic behavior. Numerical simulations using these models revealed that the thermal history plays a crucial role in the macroscopic by:

The present chapter covers the designing, development, properties and applications of carbon nanotube-loaded polymer composites. The first section will provide a brief overview of carbon nanotubes (CNTs), their synthesis, properties and functionalization routes. The second section will shed light on the CNT/polymer composites, their types, synthesis routes and by: KEYWORDS: Polymers, Particles, Composites, Scanning electron microscopy, Thulium, Acoustic emission, Neodymium, Acoustics, Atmospheric particles, Atmospheric modeling Read Abstract + Toughness of a polymer is a key material property for energy absorbing capability for . BOOK, BOOK CHAPTERS, EDITED JOURNAL SPECIAL ISSUES, MAGAZINE ARTICLES, AND EDITED PROCEEDINGS Exner, M., and Tomar, V., , An Investigation into Strain Rate Dependent Constitutive Properties of a Sandwiched Epoxy Interface , “Interface Mechanics and its Correlation with Plasticity in Polycrystalline Metals, Polymer Composites.

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Strain rate dependent modeling of polymer matrix composites (OCoLC) Online version: Goldberg, Robert K. Strain rate dependent modeling of polymer matrix composites (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors.

Strain rate dependent modeling Strain rate dependent modeling of polymer matrix composites book polymer matrix composites (OCoLC) Microfiche version: Goldberg, Robert K.

Strain rate dependent modeling of polymer matrix composites (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type: Internet Resource, Computer File. The failure patterns at two different strain rates, 10 −2 /s and 10 2 /s, are shown in Fig.

(a) and (b), respectively. At the lower strain rate of 10 −2 /s, the failure of fracture occurs horizontally, with cracks propagating along the mortar and interface elements of the specimen.

This is quite similar to the failure pattern of normal static tests. Here, A k (t) is the cross-sectional area of kth fibril and A is the cross-sectional area of the RVE. In Roy and Reddy (), the multiaxial viscoelastic stress–strain law for an individual polymer fibril may be expressed in matrix notation as () {σ (t)} fibril = [M (t)] ({ε (t)} − {H (t)}) where [M(t)] is a 6 × 6 matrix of time-dependent viscoelastic stiffness coefficients, {ε(t Author: S.

Roy. As such, a detailed understanding of the high strain rate behavior of the constituents, particularly the strain rate, temperature, and pressure dependent polymer matrix, is paramount.

In this paper, preliminary efforts in modeling experimentally observed temperature rises due to plastic deformation in PMCs subjected to dynamic loading are Cited by: 3. A research program is in progress to develop strain rate dependent deformation and failure models for the analysis of polymer matrix composites subject to impact loads.

A new strain rate dependent material and failure model referred to as the M2C Model was generated suitable for modeling the static and dynamic material behavior of fiber reinforced composites. Abstract.

The strain-rate-dependent matrix-dominated failure of multiple fiber-reinforced polymer matrix composite systems was evaluated over the range of quasi-static (10 −4) to dynamic (10 3 s −1) strain rates using available experimental data from strain rate dependent parameter, m, was found to relate strain-rate dependent lamina behavior linearly to the logarithm of Author: Joseph D.

Schaefer, Brian T. Werner, Isaac M. Daniel. In this paper, after a review of reported sources of complexities in impact modeling of fiber reinforced polymer composites, two simplified approaches are presented for fast simulation of out-of-plane impact response of these materials considering four main effects: (a) strain rate dependency of the mechanical properties, (b) difference between Cited by: 4.

The inelastic deformation behavior of polymerization of monomeric reactants (PMR) neat resin, a high-temperature thermoset polymer, was investigated at ° C ⁠.The experimental program was designed to explore the influence of strain rate changes in the 10 − 6 – 10 − 3 s − 1 range on tensile loading, unloading, and strain recovery behavior, as well as on the relaxation Cited by: Polymer matrix composites (PMCs) consist of a polymer resin reinforced with fibers, an example of which is the combat helmet.

PMCs can be subdivided into two categories, based on whether the fiber reinforcement is continuous or discontinuous. PMCs with discontinuous fibers (less than mm long. A strain-rate-dependent micro-mechanical material model using ply-level progressive failure criteria has been used to simulate the initiation and propagation of delamination.

A methodology of assigning physical significance to the choice of damage parameters has been : Sandeep Medikonda, Ala Tabiei. A 3D Orthotropic Strain-Rate Dependent Elastic Damage Material Model.

Full Record orthotropic elastic constitutive model with continuum damage and cohesive based fracture is implemented for a general polymer matrix composite lamina. The formulation assumes the possibility of distributed (continuum) damage followed b y localized damage. To make better use of fiber reinforced polymer composites in automotive applications, a clearer knowledge of its interfacial properties under dynamic and thermal loadings is necessary.

In the present study, the interfacial behavior of glass fiber reinforced polypropylene (PP) composites under different loading temperatures and strain rates were investigated via molecular dynamics : Muhan Zhang, Bingyan Jiang, Chao Chen, Dietmar Drummer, Zhanyu Zhai.

The previous results indicated that the composite was a strain rate-dependent material, and its tensile strength and stiffness increased with the increasing of the strain rates.

R.K. Micromechanical modeling of the effects of adiabatic heating on the high strain rate deformation of Author: Junjia Cui, Shaoluo Wang, Shuhao Wang, Guangyao Li, Peilin Wang, Chengsong Liang. A rate dependent model proposed for the stress-strain curve of plain concrete in the earlier study by the authors (Al-Salloum et al., ) is extended to incorporate the effect of fibers.

The influence of strain rate and the fibers on the rate dependent characteristics of HFRC composites are by: 9. Micromechanical Modeling of Viscoplastic Behavior of Laminated Polymer Composites With Thermal Residual Stress Effect Incorporation of Mean Stress Effects Into the Micromechanical Analysis of the High Strain Rate Response of Polymer Matrix Composites Micromechanical Modeling on the Rate-Dependent Viscoplastic Behavior of Polymer Cited by: 8.

Zheng and Binienda incorporated the rate dependence of elastic modulus of the polymer matrix constituent in an existing constitutive model originally developed for metal and analyzed the nonlinear, strain-rate-dependent deformation behavior of polymer matrix composites.

For polymer matrix composites subjected to large strain rates, it is important to correctly characterize the nonlinear and strain rate dependent response of polymers. For this purpose, viscoplastic constitutive equations originally implemented for metals have been modified to account for the effects of hydrostatic effects and inelastic strains.

Robert K. Goldberg, Gary D. Roberts, Justin D. Littell and Wieslaw K. Binienda, Approximation of Nonlinear Unloading Effects in the Strain Rate Dependent Deformation Analysis of Polymer Matrix Materials Utilizing a State Variable Approach, Journal of Aerospace Engineering, 21, 3, (), ().Cited by: A composite material (also called a composition material or shortened to composite, which is the common name) is a material made from two or more constituent materials with significantly different physical or chemical properties that, when combined, produce a material with characteristics different from the individual components.

The individual components remain separate and distinct within. @article{osti_, title = {High-temperature viscoelastic creep constitutive equations for polymer composites: Homogenization theory and experiments}, author = {Skontorp, A. and Wang, S.S. and Shibuya, Y.}, abstractNote = {In this paper, a homogenization theory is developed to determine high-temperature effective viscoelastic constitutive equations for fiber-reinforced polymer composites.

The flow-induced orientation in the microstructure leads to anisotropy in the mechanical response. In addition to the mechanical anisotropy, SFRTs show time dependent behavior because of the thermoplastic matrix. The developed model captures the effects of both material orientation and loading rate on the yield behavior.

Mechanics of Three-Dimensional Textile Structural Composites: Performance Modeling; T.-W. Chou, K. Pochiraju.

Testing and Modeling of Inelastic Behaviour of Fibrous Composites; C.T. Sun. Characterization of Strain Rate-Dependent Behaviour in Polymeric Composites; C.T. Sun. This important book reviews the latest research in modeling and predicting creep and fatigue in polymer matrix composites.

The first part of the book reviews the modeling of viscoelastic and viscoplastic behavior as a way of predicting performance and service life. Part two discusses techniques for modeling creep rupture and failure.

AbstractShape memory polymers (SMPs) can be programmed to a temporary shape, and then recover its original shape by applying environmental stimuli when needed. To expands the application space of SMPs, the shape memory polymer composites (SMPCs) were fabricated either to improve the mechanical properties, or to incorporate more stimulus : Ming Lei, Zhen Chen, Haibao Lu, Kai Yu.

Both are critical factors in the long-term performance and reliability of materials such as polymer matrix composites, which are often exposed to these types of stresses in civil engineering and other applications. This important book reviews the latest research in modeling and predicting creep and fatigue in polymer matrix composites.

Similar Items. Strain rate dependent deformation and strength modeling of a polymer matrix composite utilizing a micromechanics approach / by: Goldberg, Robert K., Published: () Critique of macro flow/damage surface representations for metal matrix composites using micromechanics / by: Lissenden, Cliff Jesse, et al.

Published: (). Code. General Survey. Detailed Information. Note. methodology follows the progressive-failure approach, in which it is recognized that a laminated composite structure can develop local failures or exhibit such local damage as matrix cracks, fiber breakage, fiber/matrix debonds, and delaminations under normal operating conditions and that such damage can contribute to the eventual failure of.

Strain-Rate-Dependent Failure Criteria for Composite Laminates: Application of the Northwestern Failure Theory to Multiple Material Systems Schaefer, J.

D., Werner, B. & Daniel, I. M., Jan 1Mechanics of Composite and Multi-functional Materials- Proceedings of the Annual Conference on Experimental and Applied Mechanics.

Ma, H. M. and Gao, X.-L. (). A three-dimensional Monte Carlo model for electrically conductive polymer matrix composites filled with curved fibers. Poly Gao, X.-L. (). Analytical solution for the stress field around a hard spherical particle in a metal matrix composite incorporating size and finite volume.Qida Bing and C.T.

Sun, "Modeling and Testing Strain Rate Dependent Compressive Strength of Carbon/Epoxy Composite," Composites Science and Technology, Vol. 65,pp. — Z.—H. Jin and C.T. Sun, "Cohesive Zone Modeling of Interface Fracture in Elastic Bi—Materials," Engineering Fracture Mechanics, Vol.

72,pp. BOOK CHAPTERS. M. B. Ruggles-Wrenn and M. P. Wilkinson, Fatigue of 2D and 3D Carbon-Fiber-Reinforced Polymer Matrix Composites and of a Unitized Polymer/Ceramic Matrix Composite at Elevated Temperature, Fifty Years of Progress in Carbon Fiber Research, P.

W. R. Beaumont, C. Soutis, A. Hodzic, eds., Springer, in press.