Image Processing, Symbolic PDE Computing, and FEA: A Simulation Study of Stress Distribution in Heterogeneous Material

2021 ◽  
pp. 421-429
Author(s):  
Israr Bin M. Ibrahim ◽  
Syarizal Fonna ◽  
Ramana M. Pidaparti
Keyword(s):  
Image Processing ◽  
Stress Distribution ◽  
Simulation Study ◽  
Heterogeneous Material

Simulation Study on Tapered and Spherical Shaped Charge under Underwater Explosion

2012 ◽  
Vol 157-158 ◽  
pp. 852-855
Author(s):  
Fang Yi Zhou ◽  
Tao Jiang ◽  
Wei Li Wang ◽  
Fa Min Zhan ◽  
Ke Yu Zhang
Keyword(s):  
Numerical Simulation ◽  
Stress Distribution ◽  
Simulation Study ◽  
Underwater Explosion ◽  
Shaped Charge ◽  
Damage Effect ◽  
Tapered Angle ◽  
Underwater Target ◽  
Shaped Charge Jet

For improving the damage effect to underwater target of warhead, a kind of metamorphic tapered angle shaped charge is designed, and the damge mechanism is analyzed. The physics modle of tapered and spherical shaped charge under underwater explosion is built, numerical simulation is done by LS-DYNA, the stress distribution and velocity of jet are got. The result shows that the shaped charge jet formed by this kind of structure can provide moving space for latter EFP, which improving the damage effect to target.

Explicit Haar–Schauder multiwavelet filters and algorithms. Part II: Relative entropy-based estimation for optimal modeling of biomedical signals

2019 ◽  
Vol 17 (05) ◽  
pp. 1950038 ◽  
Author(s):  
Makerem Zemni ◽  
Malika Jallouli ◽  
Anouar Ben Mabrouk ◽  
Mohamed Ali Mahjoub
Keyword(s):  
Image Processing ◽  
Relative Entropy ◽  
Simulation Study ◽  
Wavelet Theory ◽  
Biomedical Signal ◽  
New Approach ◽  
Biomedical Signals ◽  
Image Processing And Analysis ◽  
Signal Image ◽  
Optimal Modeling

Biomedical signal/image processing and analysis are always fascinating tasks in scientific researches, both theoretical and practical. One of the powerful tools in such topics is wavelet theory which has been proved to be challenging since its discovery. One of the best measures of the optimality of reconstruction of signals/images is the well-known Shannon’s entropy. In wavelet theory, this is very well known and researchers are familiar with it. In the present work, a step forward is proposed based on more general wavelet tools. New approach is proposed for the reconstruction of signals/images provided with multiwavelets Shannon-type entropy to evaluate the order/disorder of the reconstructed signals/images. Efficiency and accuracy of the approach is confirmed by a simulation study on several models such as ECG, EEG and DNA/Proteins’ signals.

scholarly journals A Simulation Study on the Stress Distribution of the Transplanting Part of Artificial Knee Joint due to Elastic Modulus

2015 ◽  
Vol 28 (3) ◽  
pp. 89-93
Author(s):  
J.H. Lee ◽  
G.W. Hwang ◽  
J.U. Cho ◽  
Seong S. Cheon
Keyword(s):  
Elastic Modulus ◽  
Stress Distribution ◽  
Knee Joint ◽  
Simulation Study

Numerical Simulation of Fracture Propagation of Heterogeneous Material

2012 ◽  
Vol 170-173 ◽  
pp. 581-584 ◽  
Author(s):  
Ze Qi Zhu ◽  
Qian Sheng ◽  
Xiao Dong Fu
Keyword(s):  
Image Processing ◽  
Numerical Modeling ◽  
Finite Difference ◽  
Failure Process ◽  
Heterogeneous Material ◽  
Modeling Method ◽  
Uniaxial Compression Test ◽  
Fuzzy Clustering Method ◽  
Heterogeneous Rock ◽  
Mineral Components

For the Three Gorges granite, a finite difference software package FLAC was used to study failure process of heterogeneous rock material. Based on mineral components identification results of the granite and fuzzy clustering method, the actual image date was transformed into the finite difference grid by applying image processing techniques. A convenient and efficient two-dimensional numerical modeling method for heterogeneous geomaterials was presented. Then, failure process of the granite were simulated in uniaxial compression test based on experimental strain soft model, and the stress concentration phenomenon was analyzed. The results show that the numerical modeling method based on digital image processing can be used to calculate the mechanical responses of geomaterials by taking their heterogeneities into considerations.

Residual Stress Distribution Through the Thickness of WC-10Co-4Cr Coating Deposited by HVOF: Experimental and Simulation Study

2020 ◽  
Vol 29 (6) ◽  
pp. 1351-1364
Author(s):  
Maedeh Sadat Zoei ◽  
Tara Farizeh ◽  
Mohammad Hosein Sadeghi ◽  
Mehdi Salehi
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Simulation Study ◽  
Residual Stress Distribution

NUMERICAL SIMULATION STUDY ON WATER-LUBRICATED RUBBER BEARING

2008 ◽  
Vol 07 (01) ◽  
pp. 111-114 ◽  
Author(s):  
XIAOJIN WU ◽  
JIAXU WANG ◽  
KE XIAO ◽  
JUANJUAN ZHU
Keyword(s):  
Numerical Simulation ◽  
Stress Distribution ◽  
Simulation Study ◽  
Three Dimensional ◽  
Material Design ◽  
Numerical Approach ◽  
Capital Cost ◽  
Water Lubrication ◽  
Rubber Bearing ◽  
Rubber Bearings

Water-lubricated rubber bearings are one of the most appropriate bearings for underwater use. Because of the configuration and special application environment, numerical simulation is difficult with FEM software and relevant report is rare. The water lubrication is especially interesting in terms of cost and convenience. As a result of capital cost of water-lubricated rubber bearing and time consuming experiment, the numerical approach with FEM prevails. But owning to the petty gap where lubrication fluid is bounded in, the modeling is very difficult. Three dimensional free modal and stress distribution of the bearing are analyzed in numerical simulating with FEM software. The present work of analyzing model is further worthwhile as the model can give yield results according to experiments. The modal and harmonic analyzing results can be used directly in material design and also the improvement of structure.

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