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Tikhonov regularization 1

adaptive smoothing 1

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dislocation 1

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Finite element simulation for elastic dislocation of the North-Tehran fault: The effects of geologic

Pooya ZAKIAN; Hossein ASADI HAYEH

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4,   Pages 533-549 doi: 10.1007/s11709-022-0802-8

Abstract: The present study uses the finite element method for simulating the crustal deformation due to the dislocationheterogeneity, the results demonstrate both the capability and usefulness of the proposed models in the dislocation

Keywords： finite element method     fault dislocation     slip distribution     the North-Tehran fault     heterogeneity     geological    

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An end-to-end 3d seismic simulation of underground structures due to point dislocation source by using

Zhenning BA; Jisai FU; Zhihui ZHU; Hao ZHONG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1515-1529 doi: 10.1007/s11709-022-0887-0

Abstract: An advantage of this approach is that it realizes the entire process simulation from point dislocation

Keywords： source-to-structure simulation     FK-FEM hybrid approach     underground structures     point dislocation source    

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Adaptive simulation of wave propagation problems including dislocation sources and random media

Hassan YOUSEFI, Jamshid FARJOODI, Iradj MAHMOUDZADEH KANI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1054-1081 doi: 10.1007/s11709-019-0536-4

Abstract: An adaptive Tikhonov regularization is integrated with an h-adaptive grid-based scheme for simulation of elastodynamic problems, involving seismic sources with discontinuous solutions and random media. The Tikhonov method is adapted by a newly-proposed detector based on the MINMOD limiters and the grids are adapted by the multiresolution analysis (MRA) via interpolation wavelets. Hence, both small and large magnitude physical waves are preserved by the adaptive estimations on non-uniform grids. Due to developing of non-dissipative spurious oscillations, numerical stability is guaranteed by the Tikhonov regularization acting as a post-processor on irregular grids. To preserve waves of small magnitudes, an adaptive regularization is utilized: using of smaller amount of smoothing for small magnitude waves. This adaptive smoothing guarantees also solution stability without over smoothing phenomenon in stochastic media. Proper distinguishing between noise and small physical waves are challenging due to existence of spurious oscillations in numerical simulations. This identification is performed in this study by the MINMOD limiter based algorithm. Finally, efficiency of the proposed concept is verified by: 1) three benchmarks of one-dimensional (1-D) wave propagation problems; 2) P-SV point sources and rupturing line-source including a bounded fault zone with stochastic material properties.

Keywords： adaptive wavelet     adaptive smoothing     discontinuous solutions     stochastic media     spurious oscillations     Tikhonov regularization     minmod limiter    

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Shield Driven Tunneling in the Complex Layer：Direction Control of Shield and Preventing Segment Crack

Tan Zhongsheng,Hong Kairong,Wan Jianglin,Wang Mengshu

Strategic Study of CAE 2006, Volume 8, Issue 12,   Pages 92-96

Abstract: Furthermore, it is also difficult to prevent segment crack and local failure and dislocation of segment

Keywords： mixed ground     tunnel     attitude control     segment crack     segment dislocation    

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Defect passivation on cast-mono crystalline screen-printed cells

Alison WENHAM,Lihui SONG,Malcolm ABBOTT,Iskra ZAFIROVSKA,Sisi WANG,Brett HALLAM,Catherine CHAN,Allen BARNETT,Stuart WENHAM

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 60-66 doi: 10.1007/s11708-016-0443-5

Abstract: applying hydrogenation processes at moderate temperatures to finished screen print cells can passivate dislocationEfficiency enhancements of up to 2% absolute are demonstrated on wafers with high dislocation densitiesillumination was responsible for the further passivation of positively charged dangling bonds within the dislocation

Keywords： silicon solar cell     dislocation     cast-mono     laser     hydrogen passivation    

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Single-Seed Casting Large-Size Monocrystalline Silicon for High-Efficiency and Low-Cost Solar Cells Article

Bing Gao,Satoshi Nakano,Hirofumi Harada,Yoshiji Miyamura,Takashi Sekiguchi,Koichi Kakimoto

Engineering 2015, Volume 1, Issue 3,   Pages 378-383 doi: 10.15302/J-ENG-2015032

Abstract: To realize this technique, two challenges—polycrystalline nucleation on the crucible wall and dislocation

Keywords： single-seed casting     monocrystalline silicon     polycrystalline nucleation     dislocation multiplication     multicrystalline    

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Title Author Date Type Operation

Finite element simulation for elastic dislocation of the North-Tehran fault: The effects of geologic

Pooya ZAKIAN; Hossein ASADI HAYEH

Journal Article

An end-to-end 3d seismic simulation of underground structures due to point dislocation source by using

Zhenning BA; Jisai FU; Zhihui ZHU; Hao ZHONG

Journal Article

Adaptive simulation of wave propagation problems including dislocation sources and random media

Hassan YOUSEFI, Jamshid FARJOODI, Iradj MAHMOUDZADEH KANI

Journal Article

Shield Driven Tunneling in the Complex Layer：Direction Control of Shield and Preventing Segment Crack

Tan Zhongsheng,Hong Kairong,Wan Jianglin,Wang Mengshu

Journal Article

Defect passivation on cast-mono crystalline screen-printed cells

Alison WENHAM,Lihui SONG,Malcolm ABBOTT,Iskra ZAFIROVSKA,Sisi WANG,Brett HALLAM,Catherine CHAN,Allen BARNETT,Stuart WENHAM

Journal Article

Single-Seed Casting Large-Size Monocrystalline Silicon for High-Efficiency and Low-Cost Solar Cells

Bing Gao,Satoshi Nakano,Hirofumi Harada,Yoshiji Miyamura,Takashi Sekiguchi,Koichi Kakimoto

Journal Article