中国科学院机构知识库网格系统: 检索

Study on Springback Behavior in Hydroforming of Micro Channels for a Metal Bipolar Plate 期刊论文 OAI收割
MATERIALS, 2024, 卷号: 17, 期号: 21, 页码: 20
作者: Su, Zonghui; Xie, Wenlong; Xu, Yong; Li, Changsheng; Xia, Liangliang

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收藏 | 浏览/下载：7/0 | 提交时间：2025/04/27

bipolar plate springback hydroforming deformation degree grain size

Evolution of mechanical parameters of Shuangjiangkou granite under different loading cycles and stress paths 期刊论文 OAI收割
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING, 2024, 卷号: 16, 期号: 4, 页码: 1113-1126
作者: Gu, Liangjie; Feng, Xia-Ting; Kong, Rui; Yang, Chengxiang; Xia, Yuelin

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收藏 | 浏览/下载：28/0 | 提交时间：2025/06/27

Triaxial cyclic loading and unloading test Stress path Deformation modulus and elastic deformation increment ratios Fracture degree Cohesion and internal friction angle

Y对无取向6.5%Si钢凝固组织、中温压缩变形和软化机制的影响 期刊论文 OAI收割
金属学报, 2023, 卷号: 59, 期号: 3, 页码: 399-412
作者: 李民; 王继杰; 李昊泽; 邢炜伟; 刘德壮

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收藏 | 浏览/下载：105/0 | 提交时间：2024/01/08

non-oriented 6.5%Si electrical steel Y warm deformation microstructure ordered degree work softening 无取向6.5%Si钢 Y 热压缩微观组织有序度加工软化

An improved algorithm to generate high quality progressive animation models (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Biomedical Engineering and Computer Science, ICBECS 2010, April 23, 2010 - April 25, 2010, Wuhan, China
作者: Zhao J.; Zhang S.

收藏 | 浏览/下载：55/0 | 提交时间：2013/03/25

In computer graphics investigation has been made in many years in progressive models generation to alleviate the workload of visualization processing. However most of the existing algorithms only focus on static meshes and very little works are to deal with animation models. In this paper we propose an improved method for generating progressive multiresolution animation models. By the method we first use a normal deviation parameter to improve the famous QEM method as our basic edge contraction metric to generate a base hierarchy. The sequence of the simplified models is generated progressively from the first frame to the last one. Based on the edge contraction sequence in the previous frame the contraction order in the current frame is adjusted according to the deformation degree. We demonstrate that our method works efficiently and can generate better approximations with well-preserved features than previous methods. 2010 IEEE.

Optimal multiresolution dynamic models generation based on triangle importance (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Image Analysis and Signal Processing, IASP'2010, April 12, 2010 - April 14, 2010, Xiamen, China
作者: Zhao J.; Zhang S.

收藏 | 浏览/下载：41/0 | 提交时间：2013/03/25

In this paper we propose an efficient method to generate optimal multiresolution dynamic models. By the method we define the triangle importance degree as a weight parameter to be embedded to the edge contraction cost so the new metric can not only measure distance error but also reflect geometric variation of local areas. A deformation degree weight is appended to the aggregated edge contraction cost for the whole animation thus sharp features on areas with large deformation can be preserved. In addition a process of mesh optimization and validity check can further alleviate the geometric distortion of the approximations. Our approach is efficient in operation easy for implementation and as a result high quality of dynamic approximations with well-preserved fine details can be generated at any given frame. 2010 IEEE.

A local feature based simplification method for animated mesh sequence (EI CONFERENCE) 会议论文 OAI收割
2010 2nd International Conference on Computer Engineering and Technology, ICCET 2010, April 16, 2010 - April 18, 2010, Chengdu, China
作者: Wang B.; Wang B.; Zhao J.; Zhang S.

收藏 | 浏览/下载：47/0 | 提交时间：2013/03/25

Although animated meshes are frequently used in numerous domains only few works have been proposed until now for simplifying such data. In this paper we propose a new method for generating progressive animated models based on local feature analysis and deformation area preservation. We propose the use of solid angle and height value for a non-hyperbolic vertex to define the local feature parameter. This local factor is embedded to the vertex quadric error matrix when calculating the edge collapse cost. In order to preserve the areas with large deformation we add deformation degree weight to the aggregated quadric errors when computing the unified edge contraction sequence. Finally a mesh optimization process is proposed to further reduce the geometric distortion for each frame. Our approach is fast easy to implement and as a result good quality dynamic approximations with well-preserved fine details can be generated at any given frame. 2010 IEEE.

Animated models coarsening with local area distortion and deformation degree control (EI CONFERENCE) 会议论文 OAI收割
International Conference on Image Processing and Pattern Recognition in Industrial Engineering, August 7, 2010 - August 8, 2010, Xi'an, China
作者: Zhang S.; Zhao J.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

In computer graphics applications mesh coarsening is an important technique to alleviate the workload of visualization processing. Compared to the extensive works on static model approximation very little attentions have been paid to animated models. In this paper we propose a new method to approximate animated models with local area distortion and deformation degree control. Our method uses an improved quadric error metric guided by a local area distortion measurement as a basic hierarchy. Also we define a deformation degree parameter to be embedded into the aggregated quadric errors so areas with large deformation during the animation can be successfully preserved. Finally a mesh optimization process is proposed to further reduce the geometric distortion for each frame. Our approach is fast easy to implement and as a result good quality dynamic approximations with well-preserved sharp features can be generated at any given frame. 2010 SPIE.

A new algorithm to approximate deforming models based on torsion detection (EI CONFERENCE) 会议论文 OAI收割
2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010, September 23, 2010 - September 25, 2010, Chengdu, China
作者: Zhang S.; Wang G.

收藏 | 浏览/下载：48/0 | 提交时间：2013/03/25

In this paper we propose a new method to approximate deforming models based on torsion detection. We propose the use of surface torsion to represent local features on the original model and consider it as an additional weight factor when calculating the edge contraction cost during the simplification process. The approximations of the original deforming models are generated progressively from the first frame to the last one. Based on the edge contraction sequence in the previous frame the contraction order in the current frame is adjusted according to the deformation degree. Our approach is fast easy to implement and as a result good quality approximations with well-preserved fine details can be generated at any given frame. 2010 IEEE.

基于时变纹元的真实感草地枯萎模拟 期刊论文 OAI收割
软件学报, 2010, 卷号: 21, 期号: 9, 页码: 2224-2236
焦少慧; 杨刚; 吴恩华

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收藏 | 浏览/下载：61/0 | 提交时间：2011/05/23

时变纹元纹元变形点模型物理-生物模型时变度time-varying texel texel deformation point-based model physical-biological model weathering degree

Multiresolution animated models generation based on deformation distance analysis (EI CONFERENCE) 会议论文 OAI收割
2009 International Conference on Computer Modeling and Simulation, ICCMS 2009, February 20, 2009 - February 22, 2009, Macau, China
Shixue Z.; Enhua W.

收藏 | 浏览/下载：84/0 | 提交时间：2013/03/25

In computer graphics animated models have been widely used to represent time-varying data. Reducing the models complexly is a common way to overcome the rendering limitations. In this paper 2009 IEEE. we propose an efficient method for generating multiresolution animated models based on deformation distance analysis. Our method obtains different LOD models by performing iterative edge contraction operations. We use deformation distance to analysis the deformation degree of the triangle planes during the whole animation and define a deformation weight to be added to the aggregated edge contraction cost. Thus features in areas with large deformation can be preserved well. Besides we propose a mesh optimization method for dynamic model sequence which can efficiently improve the temporal coherence and reduce visual artifacts between adjacent frames. The results show our approach is efficient easy to implement and good quality animated approximations with well-preserved fine details can be generated at any given frame. copy