Numerical Wave Speed Sensitivity Study for Assessment of Myocardial Elasticity in a Simplified Linear Elastic and Isotropic Left Ventricle Model

The total strain, elastic plus plastic, was measured with strain gages on valve bodies with internal pressure that caused surface yielding. The correlation of the simulated maximum principal strain was compared to strain gage data. A mesh sensitivity study shows that in regions of large plastic strain, mesh elements are required that are an order of magnitude smaller than what is used for linear elastic stress analysis for the same structure. A local mesh refinement was adequate to resolve the local high strain values. Both the location and magnitude of the maximum strain changed with a local mesh refinement. The local mesh refinement requirement was consistent over several structures that were tested. The test and simulation work will be presented along with the mesh sensitivity study. Some results on using an energy stabilization technique to aid convergence will be presented in terms of the impact on the predicted plastic strain.

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The role of wave speed in wave intensity analysis: a sensitivity study in coronary arterial data

Journal of Biomechanics ◽

10.1016/s0021-9290(06)85554-5 ◽

2006 ◽

Vol 39 ◽

pp. S614-S615

Author(s):

J. Aguado-Sierra ◽

J. Davies ◽

J. Mayet ◽

D. Francis ◽

A.D. Hughes ◽

...

Keyword(s):

Wave Speed ◽

Sensitivity Study ◽

Wave Intensity ◽

Intensity Analysis ◽

Wave Intensity Analysis

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Analysis of the 17-segment left ventricle model using generalized estimating equations

Journal of Nuclear Cardiology ◽

10.1007/s12350-015-0186-4 ◽

2015 ◽

Vol 23 (5) ◽

pp. 1110-1111 ◽

Cited By ~ 2

Author(s):

Samantha R. Seals ◽

Inmaculada B. Aban

Keyword(s):

Left Ventricle ◽

Generalized Estimating Equations ◽

Estimating Equations ◽

Left Ventricle Model ◽

Generalized Estimating

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Mechanical characterization of jute fiber based biocomposite to manufacture automotive components

Journal of Applied Research and Technology ◽

10.22201/icat.24486736e.2021.19.5.1220 ◽

2021 ◽

Vol 19 (5) ◽

pp. 472-491

Author(s):

Jorge Antonio Velasco Parra ◽

Bladimir A Ramón Valencia ◽

William Javier Mora Espinosa

Keyword(s):

Static Analysis ◽

Research Work ◽

Sensitivity Study ◽

Jute Fiber ◽

Scale Model ◽

Elastic Behavior ◽

Linear Elastic ◽

Operating Stress ◽

Work Samples ◽

Flexural Tests

In this research work, samples of the biocomposite were manufactured using the vacuum assisted resin transfer molding (VARTM) technique, whose matrix is a polyester resin and the reinforcement is a biaxial fabric (90°) made with jute fiber. Then, tensile and flexural tests were carried out on standardized specimens under ASTM standards, in order to mechanically characterize the jute-polyester biocomposite. In both destructive tests, the results showed a linear-elastic behavior with brittle fracture and greater strength of the jute-polyester biocomposite, with respect to the thermosetting matrix’s properties. Subsequently, a finite element based static analysis was performed, with the help of the ANSYS software, to determine the mechanical behavior of interior opening handle for a car door. In it, a model sensitivity study was run to determine the influence of the mesh type and identify the convergence of mesh. Later, the static analysis results were obtained: critical zone, maximum operating stress and safety factors. The results obtained computationally validate the use of jute-polyester biocomposite, as a substitute for the manufacture of an interior opening handle for a car door. Finally, a scale model of the piece made with jute-polyester biocomposite was manufactured.

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