A model for mechanical behavior of metallic materials under impulse loading

1978 ◽  
Vol 10 (5) ◽  
pp. 594-599 ◽  
Author(s):  
G. V. Stepanov
Keyword(s):  
Mechanical Behavior ◽  
Impulse Loading ◽  
Metallic Materials

Porous Gradient Implant for Mandible and Craniofacial Surgery

2008 ◽  
Vol 396-398 ◽  
pp. 269-272
Author(s):  
E.S. Antunes ◽  
T. H. S. Sousa ◽  
C.A. Fortulan ◽  
Jonas Carvalho ◽  
B. de M. Purquerio
Keyword(s):  
Health Service ◽  
Mechanical Strength ◽  
Mechanical Behavior ◽  
Castor Oil ◽  
Biological Interaction ◽  
Bone Reconstruction ◽  
Metallic Materials ◽  
High Mechanical Strength ◽  
Bioactive Material ◽  
Material Composite

Non metallic materials like polyurethane has been successfully used for bone reconstruction in general and specifically in craniofacial and in mandible surgeries as an implantable material. However, any polymer alone cannot be universally successful as a medical device or structural implant because the eventual lack of well defined porous geometry, inherent interconnected porosity, the non dispensable need for a combined mechanical behavior with biological interaction and manufacturing feasibility. In this work, a bioactive material composite with high mechanical strength was designed using a castor oil polyurethane (PU) structure with a functional gradient having a dense core and a porous bioactive surface. The models and replicas for the implants were processed with Rapid Prototyping (RP) techniques and their application (case studies) were fulfilled according to the SUS (Brazilian Health Service) with the support of Santa Tereza Hospital, Petropolis, RJ.

Mechanical and Functional Properties of Titanium Alloys Processed by Severe Plastic Deformation

2011 ◽  
Vol 683 ◽  
pp. 137-148 ◽  
Author(s):  
Vladimir V. Stolyarov
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Mechanical Behavior ◽  
Titanium Alloys ◽  
Functional Properties ◽  
Coarse Grained ◽  
Cyclic Loads ◽  
Metallic Materials ◽  
Ultrafine Grained

Systematized literature data related to the study of mechanical and functional properties of ultrafine-grained and nanostructured metallic materials processed by deformation methods are presented. Special attention is given to the mechanical behavior of titanium materials under tension, as well as under impact and cyclic loads. The advantage of the materials under investigation over their coarse-grained analogues is shown.

Constitutive Modeling of Mechanical Behavior of Metallic Materials with Nanocrystalline Surface Layer

2013 ◽  
Vol 634-638 ◽  
pp. 2813-2817
Author(s):  
Yao Mian Wang ◽  
Cong Hui Zhang
Keyword(s):  
Surface Layer ◽  
Mechanical Behavior ◽  
Yield Stress ◽  
Strain Curve ◽  
Strain Rates ◽  
Metallic Materials ◽  
Stress Strain Curve ◽  
Grain Sizes ◽  
Iron Sample ◽  
Nanocrystalline Layer

A constitutive model, adopting the modified Khan, Huang and Liang (KHL) viscoplastic model to describe plastic deformation of metallic materials with different grain sizes in the range of nanometers to micrometers at different strain rates, was presented to simulate the mechanical behavior of iron sample with nanocrystalline surface layer. Stress-strain curve and yield stress of the iron sample were calculated by means of this model. Influence of grain size distribution in the cross section was also investigated. The simulation results indicate that the yield stress can be increased after the formation of the nanocrystalline surface layer. And an increment of the fraction of the nanocrystalline layer can improve the yield stress further.

Generation of Nanostructures on 316L Stainless Steel and Its Effect on Mechanical Behavior

2005 ◽  
Vol 490-491 ◽  
pp. 625-630 ◽  
Author(s):  
T. Roland ◽  
Delphine Retraint ◽  
K. Lu ◽  
Jian Lu
Keyword(s):  
Residual Stress ◽  
Mechanical Behavior ◽  
316L Stainless Steel ◽  
Mechanical Response ◽  
High Strength ◽  
Nanostructured Material ◽  
Surface Mechanical Attrition Treatment ◽  
Metallic Materials ◽  
Mechanical Attrition ◽  
Compressive Residual Stresses

Improved mechanical behavior of surface nanostructured metallic materials produced by means of a surface mechanical attrition treatment (S.M.A.T) is investigated experimentally. Based on microscopic observations and residual stress measurements, factors leading to the high strength and yielding are discussed. The effects due to treatment, as compressive residual stresses, are in that way studied for a better understanding of their influence on the global mechanical response of the nanostructured material. In regards of this, a simple way to increase the ductility of such a nanostructured material is also presented.

Sign in / Sign up

Export Citation Format

Share Document