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New Findings from X.X. Cui and Co-Authors in the Area of Computer-Aided Design Reported (A Coupled Finite Difference Material Point Method and Its...

August 14, 2014



New Findings from X.X. Cui and Co-Authors in the Area of Computer-Aided Design Reported (A Coupled Finite Difference Material Point Method and Its Application in Explosion Simulation)

By a News Reporter-Staff News Editor at Computer Weekly News -- Research findings on Computer-Aided Design are discussed in a new report. According to news originating from Beijing, People's Republic of China, by VerticalNews correspondents, research stated, "The material point method (MPM) discretizes the material domain by a set of particles, and has showed advantages over the mesh-based methods for many challenging problems associated with large deformation. However, at the same time, it requires more computational resource and has difficulties to construct high order scheme when simulating the fluid in high explosive (HE) explosion problems."

Our news journalists obtained a quote from the research, "A coupled finite difference material point (CFDMP) method is proposed through a bridge region to combine the advantages of the finite difference method (FDM) and MPM. It solves a 3D RE explosion and its interaction with the surrounding structures by dividing the problem domain into FDM region and MPM region in space. FDM is employed to simulate the region where the detonation products disperse into the surrounding air, while the FSI region is simulated by MPM. A bridging region is employed to exchange the information. In the bridge region, MPM provides the boundary condition for FDM region by mapping the variables from MPM background grid nodes to FDM fictitious points, while FDM provides the boundary condition for MPM region by mapping the variables from FDM cell-centre points to MPM interface grid nodes. The transportation between the two computational regions is implemented by moving particles in the bridge region. Numerical results are in good agreement with those of theoretical solutions, empirical formula and experiments."

According to the news editors, the research concluded: "No obvious interface effect are observed in the bridge region in numerical tests."

For more information on this research see: A Coupled Finite Difference Material Point Method and Its Application in Explosion Simulation. Cmes-Computer Modeling in Engineering & Sciences, 2014;98(6):565-599. Cmes-Computer Modeling in Engineering & Sciences can be contacted at: Tech Science Press, 6825 Jimmy Carter Blvd, Ste 1850, Norcross, GA 30071, USA.

The news correspondents report that additional information may be obtained from X.X. Cui, Beijing Inst Special Engn Design & Res, Beijing 100028, People's Republic of China. Additional authors for this research include X. Zhang, X. Zhou, Y. Liu and F. Zhang.

Keywords for this news article include: Asia, Beijing, Computer-Aided Design, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Computer Weekly News


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