Effect of Tissue Material Properties in Blast Loading: Coupled Experimentation and Finite Element Simulation

2018 ◽  
Vol 47 (9) ◽  
pp. 2019-2032 ◽  
Author(s):  
Molly T. Townsend ◽  
Eren Alay ◽  
Maciej Skotak ◽  
Namas Chandra
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Material Properties ◽  
Blast Loading ◽  
Element Simulation ◽  
Tissue Material

Rate-Dependent Material Properties of Adhesively Bonded Joints - Must Have or Nice to Have?

2020 ◽  
Vol 858 ◽  
pp. 14-19
Author(s):  
Michael May
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Material Properties ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Crash Simulation ◽  
Adhesively Bonded Joints ◽  
Rate Dependent ◽  
Element Simulation ◽  
Good Agreement

In the context of automotive crash simulation, rate-dependent properties are sought for all materials undergoing deformation. Measuring rate-dependent properties of adhesively bonded joints is a challenging and associated with additional cost. This article assesses the need for having rate-dependent properties of adhesively bonded joints for the example of a typical automotive structure, an adhesively bonded metallic T-joint. Using Finite Element simulation it could be shown that good agreement between experiment and simulation was only achieved if rate-dependent properties were considered for the adhesive.

Formability of Heat Treated AA19000, AA5052 and Simulation using ABAQUS/CAE

2017 ◽  
Vol 9 (4) ◽  
Author(s):  
K. Logesh ◽  
V.K. Bupesh Raja ◽  
D. Surryaprakash ◽  
R. Desigavinayagam
Keyword(s):  
Finite Element ◽  
Tensile Test ◽  
Finite Element Simulation ◽  
Material Properties ◽  
Aluminium Alloys ◽  
Magnesium Content ◽  
Annealed Condition ◽  
Element Simulation ◽  
Heat Treated ◽  
Erichsen Cupping Test

In this paper the formability of heat treated AA19000 and AA5052 aluminium alloys was studied through experimentation and finite element simulation. The aluminium alloys of 1mm thickness as received and annealed condition were subjected to tensile test and Erichsen cupping test. The experimental results showed that AA5052 possessed better formability than AA19000, due to its magnesium content. The material properties obtained from the tests were validated through simulation using ABAQUS/CAE.

scholarly journals Damage dependent material properties in a Finite Element Simulation of a hybrid forward extrusion process

2017 ◽  
Vol 207 ◽  
pp. 437-441 ◽  
Author(s):  
Stephan Hojda ◽  
Karl J.X. Sturm ◽  
Michael Terhorst ◽  
Fritz Klocke ◽  
Gerhard Hirt
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Material Properties ◽  
Extrusion Process ◽  
Forward Extrusion ◽  
Element Simulation

Interface Bonding Property of Fiber-Reinforced Resin Mineral Composite

2012 ◽  
Vol 253-255 ◽  
pp. 499-502
Author(s):  
Xiu Hua Ren ◽  
Ze Ning Wang ◽  
Tao Wang ◽  
Jian Hua Zhang
Keyword(s):  
Finite Element ◽  
Mechanical Strength ◽  
Finite Element Simulation ◽  
Surface State ◽  
Material Properties ◽  
Resin Matrix ◽  
Interface Bonding ◽  
Microstructure Characteristics ◽  
Element Simulation ◽  
Bonding Property

Resin mineral composite (RMC) reinforced by fibers belongs to a multiphase material, whose mechanical strength depends on its material properties of components and microstructure characteristics of fibers including surface state, shape, and so on. The interface mechanism between fiber and matrix was analyzed. Finite element simulation was employed to discuss the reinforced effect of fiber on resin matrix, and the influence of fiber shape, surface state on interface bonding property respectively. Research results showed that linear fibers with surface dents or fibers shaped like S, U, V, N, W English letters performed well, and had much better reinforced effects on matrix than ordinary linear fibers.

Effect of Indenter Geometries on Material Properties: A Finite Element Simulation

2011 ◽  
Vol 70 ◽  
pp. 219-224 ◽  
Author(s):  
J.J. Kang ◽  
A.A. Becker ◽  
W. Sun
Keyword(s):  
Finite Element ◽  
Elastic Modulus ◽  
Finite Element Simulation ◽  
Material Properties ◽  
Plastic Strains ◽  
Fe Simulations ◽  
Element Simulation ◽  
Different Types ◽  
Indentation Tests

In this study, numerical indentation tests are carried out to examine the sensitivity of FE solutions with respect to different types of substrate models. Axisymmetric, 3D-quarter and 3D-half geometry substrates with a perfectly sharp indenter are modelled. Numerical evaluations of three different indenters, namely Berkovich, Vickers and conical indenters with perfectly sharp tips are investigated. From the FE simulations, the loading-unloading curves can be obtained. From the slope of the unloading curve, the hardness and elastic modulus can be calculated by using the Oliver-Pharr method. The results are compared to investigate the effects of using different indenter geometries. The equivalent plastic strains and the effects of different face angles of the indenters are analysed.

scholarly journals Finite Element Simulation of Medium-Range Blast Loading Using LS-DYNA

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Yuzhen Han ◽  
Huabei Liu
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Numerical Models ◽  
Fluid Structure Interaction ◽  
Blast Loading ◽  
Fluid Structure ◽  
Scaled Distance ◽  
Structure Interaction ◽  
Element Simulation ◽  
Loading Scheme

This study investigated the Finite Element simulation of blast loading using LS-DYNA. The objective is to identify approaches to reduce the requirement of computation effort while maintaining reasonable accuracy, focusing on blast loading scheme, element size, and its relationship with scale of explosion. The study made use of the recently developed blast loading scheme in LS-DYNA, which removes the necessity to model the explosive in the numerical models but still maintains the advantages of nonlinear fluid-structure interaction. It was found that the blast loading technique could significantly reduce the computation effort. It was also found that the initial density of air in the numerical model could be purposely increased to partially compensate the error induced by the use of relatively large air elements. Using the numerical approach, free air blast above a scaled distance of 0.4 m/kg1/3was properly simulated, and the fluid-structure interaction at the same location could be properly duplicated using proper Arbitrary Lagrangian Eulerian (ALE) coupling scheme. The study also showed that centrifuge technique, which has been successfully employed in model tests to investigate the blast effects, may be used when simulating the effect of medium- to large-scale explosion at small scaled distance.

FINITE ELEMENT SIMULATION OF IN VIVO TOOTH MOBILITY IN COMPARISON WITH EXPERIMENTAL RESULTS

2003 ◽  
Vol 03 (01) ◽  
pp. 79-94 ◽  
Author(s):  
CHRISTINA DOROW ◽  
JUERGEN SCHNEIDER ◽  
FRANZ G. SANDER
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Material Properties ◽  
Biological Tissues ◽  
Experimental Results ◽  
Geometry Model ◽  
Tooth Mobility ◽  
Element Simulation

The objective of this study was to characterize the material properties of the periodontal ligament (PDL). Since the PDL undergoes the largest deformations when a load is applied to the tooth crown, its material properties mainly govern the resulting tooth deflection. By comparing experiments on tooth mobility with a Finite Element simulation using individual and realistic geometry models of the measured teeth, information about the mechanical properties of the PDL can be obtained. To investigate in vivo tooth mobility, a special experimental setup has been developed. The experimental results showed highly non-linear and time dependent material properties of tooth deflection as they are known for other soft biological tissues.6 Since in vivo tooth deflection is not an uniaxial tensional experiment, it is not possible to determine material parameters of the PDL. For this reason, a geometry model of the measured tooth was generated using computer tomography data and in a Finite Element simulation tooth deflection under external forces was calculated. A comparison of the simulation with the experimental data lead to an optimized characterization of the PDL in view of its mechanical properties.

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