scholarly journals A hybrid finite element analysis and evolutionary computation method for the design of lightweight lattice components with optimized strut diameter

2016 ◽  
Vol 90 (9-12) ◽  
pp. 2689-2701 ◽  
Author(s):  
Konstantinos Salonitis ◽  
Dimitrios Chantzis ◽  
Vassilios Kappatos
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Evolutionary Computation ◽  
Computation Method ◽  
Element Analysis ◽  
Hybrid Finite Element

The Finite Element Analysis and Optimization of Micro Free Piston Swing Engine’s Strain Interference

2010 ◽  
Vol 139-141 ◽  
pp. 938-942
Author(s):  
Ji Jing Lin ◽  
Yan Hong Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Computation Method ◽  
Element Analysis ◽  
Free Piston ◽  
New Type ◽  
Swing Engine

MFPSE, Micro Free Piston Swing Engine, is a new type of miniature internal combustion engine based on the working principle of two-stroke swing engine. The successful development and operation of this type of miniature internal combustion engine provide important significance for the miniaturization of the internal combustion engine, and provide a number of important research theory, computation method and experimental data. In this article, according to the work characteristics and co-ordination requirements of MFPSE (Micro Free Piston Swing Engine), whose strain interference is analyzed using finite element analysis software, the problems and interference of the center pendulum and cylinder is found evidently. The data of analysis provides theory basis for the MFPSE’s structural optimization, and is critical to improve the performance of MFPSE.

Hybrid finite-element analysis of Laplace's equation with singularities

AIAA Journal ◽  
1988 ◽  
Vol 26 (1) ◽  
pp. 119-121 ◽  
Author(s):  
Kuen Ting ◽  
Wen-Hwa Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Laplace’S Equation ◽  
Element Analysis ◽  
Laplace's Equation ◽  
Hybrid Finite Element

scholarly journals Realistic computer modelling of stent retriever thrombectomy: a hybrid finite-element analysis-smoothed particle hydrodynamics model

2021 ◽  
Vol 18 (185) ◽  
Author(s):  
S. Mostafa Mousavi J. S. ◽  
Danial Faghihi ◽  
Kelsey Sommer ◽  
Mohammad M. S. Bhurwani ◽  
Tatsat R. Patel ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Smoothed Particle Hydrodynamics ◽  
Computer Modelling ◽  
Blood Clot ◽  
Stent Retriever ◽  
Element Analysis ◽  
Hybrid Finite Element ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

Stent retriever thrombectomy is a pre-eminent treatment modality for large vessel ischaemic stroke. Simulation of thrombectomy could help understand stent and clot mechanics in failed cases and provide a digital testbed for the development of new, safer devices. Here, we present a novel, in silico thrombectomy method using a hybrid finite-element analysis (FEA) and smoothed particle hydrodynamics (SPH). Inspired by its biological structure and components, the blood clot was modelled with the hybrid FEA–SPH method. The Solitaire self-expanding stent was parametrically reconstructed from micro-CT imaging and was modelled as three-dimensional finite beam elements. Our simulation encompassed all steps of mechanical thrombectomy, including stent packaging, delivery and self-expansion into the clot, and clot extraction. To test the feasibility of our method, we simulated clot extraction in simple straight vessels. This was compared against in vitro thrombectomies using the same stent, vessel geometry, and clot size and composition. Comparisons with benchtop tests indicated that our model was able to accurately simulate clot deflection and penetration of stent wires into the clot, the relative movement of the clot and stent during extraction, and clot fragmentation/embolus formation. In this study, we demonstrated that coupling FEA and SPH techniques could realistically model stent retriever thrombectomy.

A Hybrid Finite Element Method for Calculating the Vibration of Co-Linear Beams in the Mid-Frequency Range

1999 ◽  
Author(s):  
Xi Zhao ◽  
Nickolas Vlahopoulos
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Theoretical Development ◽  
Frequency Range ◽  
Element Analysis ◽  
Hybrid Finite Element Method ◽  
Hybrid Finite Element ◽  
New Formulation ◽  
Element Method

Abstract The theoretical development of a hybrid finite element method is presented. It combines conventional Finite Element Analysis (FEA) with Energy Finite Element Analysis (EFEA) in order to achieve a numerical solution to mid-frequency vibrations. In the mid-frequency range a system is comprised by some members that contain several wavelengths and some members that contain a small number of wavelengths. The former are considered long members and they are modeled by the EFEA. The latter are considered short and they are modeled by the FEA. The new formulation is based on deriving appropriate interface conditions at the joints between sections modeled by the EFEA and the FEA methods. Since the work presented in this paper constitutes a fundamental step in the development of a hybrid method for mid-frequency analysis, the formulation for one flexural degree of freedom in co-linear beams is presented. The excitation is considered to be applied on a long member and the response of the entire system is computed. Uncertainty effects are imposed only on the long members of the system. Validation cases for several configurations are presented.

Hybrid Finite-Element Analysis of Leaky Surface Acoustic Waves in Periodic Waveguides

1996 ◽  
Vol 35 (Part 1, No. 5B) ◽  
pp. 2997-3001 ◽  
Author(s):  
Koji Hasegawa ◽  
Masanori Koshiba
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Element Analysis ◽  
Hybrid Finite Element
Sign in / Sign up

Export Citation Format

Share Document