scholarly journals The influence of Material Nonlinearity and Microstructural Damage on the Inplane Shear response of Carbon/Epoxy Composites

1992 ◽  
Vol 1 (1) ◽  
pp. 096369359200100 ◽  
Author(s):  
K Gipple ◽  
E T Camponeschi
Keyword(s):  
Finite Element Analysis ◽  
Nonlinear Response ◽  
Epoxy Composites ◽  
Nonlinear Material ◽  
Strain Response ◽  
Element Analysis ◽  
Material Models ◽  
Microstructural Damage ◽  
Failure Theory ◽  
Measured Response

Accurate nonlinear material models must include both material and damage related nonlinearities. Even at the specimen level macromechanical boundary conditions and specimen geometry can significantly affect the measured response. In this study two experimental techniques for determining shear stress strain response are compared and a micromechanical finite element analysis is used to determine the effect of failure theory on predicted nonlinear response.

Finite Element Analysis of Tire and Pavement Interaction

2011 ◽  
Author(s):  
Kwangwon Kim ◽  
Jaehyung Ju ◽  
Doo-Man Kim ◽  
Swangwa Rhie
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Interaction Model ◽  
Fe Analysis ◽  
Nonlinear Material ◽  
Stress Distributions ◽  
Element Analysis ◽  
Material Models ◽  
Interaction Models ◽  
Pavement Material

Nonlinear material models of a tire and a pavement appear to be important to precisely evaluate both tire performance and stresses of a pavement. In this paper, nonlinear tire and pavement material models are used and their contract pressures of a tire and stresses of a pavement are investigated. The results with the nonlinear material models are compared with those of simplified tire and pavement models. Finite element (FE) analysis with ABAQUS is used for simulating four different interaction models of tire and pavement. An interaction model with a hyperelastic tire and an elasto-viscoplastic pavement shows accurate contract pressures of a tire and stress distributions of a pavement.

Comparison of Different Material Models to Simulate 3-D Breast Deformations Using Finite Element Analysis

2013 ◽  
Vol 42 (4) ◽  
pp. 843-857 ◽  
Author(s):  
Maximilian Eder ◽  
Stefan Raith ◽  
Jalil Jalali ◽  
Alexander Volf ◽  
Markus Settles ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Material Models

scholarly journals Finite Element Analysis of Stress-Strain Response at the Tool Pin During Friction Stir Process

2015 ◽  
Vol 76 ◽  
pp. 522-527
Author(s):  
M. Shamil Jaffarullah ◽  
Nur’Amirah Busu ◽  
Cheng Yee Low ◽  
J.B. Saedon ◽  
Armansyah ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Strain Response ◽  
Stress Strain ◽  
Element Analysis ◽  
Friction Stir Process ◽  
Friction Stir ◽  
Tool Pin

scholarly journals On the Design of a Biodegradable POC-HA Polymeric Cardiovascular Stent

2012 ◽  
Author(s):  
Joonas Ponkala ◽  
Mohsin Rizwan ◽  
Panos S. Shiakolas
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Material Properties ◽  
Three Dimensional ◽  
Polymeric Composite ◽  
Coronary Stent ◽  
Element Analysis ◽  
Material Models ◽  
Solid Models ◽  
Biodegradable Stents

The current state of the art in coronary stent technology, tubular structures used to keep the lumen open, is mainly populated by metallic stents coated with certain drugs to increase biocompatibility, even though experimental biodegradable stents have appeared in the horizon. Biodegradable polymeric stent design necessitates accurate characterization of time dependent polymer material properties and mechanical behavior for analysis and optimization. This manuscript presents the process for evaluating material properties for biodegradable biocompatible polymeric composite poly(diol citrate) hydroxyapatite (POC-HA), approaches for identifying material models and three dimensional solid models for finite element analysis and fabrication of a stent. The developed material models were utilized in a nonlinear finite element analysis to evaluate the suitability of the POC-HA material for coronary stent application. In addition, the advantages of using femtosecond laser machining to fabricate the POC-HA stent are discussed showing a machined stent. The methodology presented with additional steps can be applied in the development of a biocompatible and biodegradable polymeric stents.

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