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浏览/检索结果: 共55条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 The Influence of Different Sublevel Heights on the Stability of Faults under Sublevel-Filled Synergistic Mining 期刊论文  OAI收割 APPLIED SCIENCES-BASEL, 2023, 卷号: 13, 期号: 23, 页码: 20 作者:  Li, Fangrui;  Guo, Jie;  Ma, Fengshan;  Li, Guang;  Song, Yewei   |  收藏  |  浏览/下载：18/0  |  提交时间：2024/01/09 coordinated mining  fault dynamic response  lower-layer filling method  mining impact  sublevel caving method without the sill pillar  sublevel height   Elastic equivalent numerical modeling based on the dynamic method of Longmaxi Formation shale digital core 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2020, 卷号: 63, 期号: 7, 页码: 2786-2799 作者:  Jian ShiKai;  Fu LiYun;  Wang ZhiWei;  Han TongCheng;  Liu JianLin   |  收藏  |  浏览/下载：31/0  |  提交时间：2020/09/28 Longmaxi Formation shale  Digital core  Elastic equivalent numerical modeling based on the dynamic method  Biot poroelastic equation  Finite-difference simulation   The continuous-discontinuous cellular automaton method for elastodynamic crack problems 期刊论文  OAI收割 ENGINEERING FRACTURE MECHANICS, 2018, 卷号: 204, 期号: -, 页码: 482-496 作者:  Yan, Fei;  Pan, Peng-Zhi;  Feng, Xia-Ting;  Li, Shao-Jun   |  收藏  |  浏览/下载：85/0  |  提交时间：2020/04/08 The time domain continuous-discontinuous  cellular automaton  Cellular automaton method  Fast updating scheme  Dynamic stress intensity factor  Elastodynamic problem   Dynamic thermo-mechanical coupled simulation of statistically inhomogeneous materials by statistical second-order two-scale method 期刊论文  OAI收割 ACTA MECHANICA SINICA, 2015, 卷号: 31, 期号: 5, 页码: 762-776 作者:  Yang, Zihao;  Cui, Junzhi;  Nie, Yufeng;  Huang, Zhiqiang;  Xiang, Meizhen   |  收藏  |  浏览/下载：30/0  |  提交时间：2018/07/30 Statistically inhomogeneous materials  Dynamic thermo-mechanical coupled performances  The SSOTS method  The thermo-mechanical coupling effect   Structural design of primary mirror subassembly for space telescope (EI CONFERENCE) 会议论文  OAI收割 2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan 作者:  Xu H. 收藏  |  浏览/下载：69/0  |  提交时间：2013/03/25 In order to design a large aperture primary mirror with the diameter of 1150 mm  the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail  including material selection  diameter-thickness ratio  the number of the support points  location selection and lightweight structure  etc. A novel space mirror structure system was put forward  and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements. (2013) Trans Tech Publications  Switzerland.   Research on soybean security of China based on system dynamics (EI CONFERENCE) 会议论文  OAI收割 31st Chinese Control Conference, CCC 2012, July 25, 2012 - July 27, 2012, Hefei, China 作者:  Gao M.-H. 收藏  |  浏览/下载：33/0  |  提交时间：2013/03/25 Based on considerations of soybean production  imports and exports trade  processing and consumption  we study the soybean industry of China with the method of system dynamics. Firstly  we build the SD model of soybean industry. Secondly  we optimize soybean security policy simulation dynamic model and simulate the model based on our country specific situation. At last  on the basis of the simulation results  we analyze current domestic soybean industry security situation and provide a method to make suggestions for soybean security policy. 2012 Chinese Assoc of Automati.   Stochastic and dynamic modeling of MEMS gyroscopes (EI CONFERENCE) 会议论文  OAI收割 2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China 作者:  Wang Y.;  Wang Y.;  Wang Y.;  Wang Y.;  Wang Y. 收藏  |  浏览/下载：36/0  |  提交时间：2013/03/25 The paper introduce two methods to identify the MEMS gyroscope  Allan variance method and AR(n) model. Both the method has broadly used in engineering. Through the two method  the statistical mathematical properties and dynamic system properties of MEMS gyroscope are proclaimed. 2012 IEEE.   The linear detection of glass feet billet based on Sobel (EI CONFERENCE) 会议论文  OAI收割 2012 International Conference on Computer Science and Information Processing, CSIP 2012, August 24, 2012 - August 26, 2012, Xi'an, Shaanxi, China 作者:  Li Y.;  Li Y.;  Li Y.;  Li Y. 收藏  |  浏览/下载：36/0  |  提交时间：2013/03/25 In the process of producing glass feet billet  how to detect the qualification of the products has became an important part. For this situation  this paper designs a detection system of the linear of glass feet billet. In this system  first  make Sobel edge detection to the images from the camera. Then this paper proposes a dynamic threshold segmentation method  this method can draw the upper edge curve of the glass feet billet quickly and accurately. This method can detect the qualification of the products very accurate. This system has been successfully applied to the products site. 2012 IEEE.   Parameter optimization of passive dynamic walking biped with knees (EI CONFERENCE) 会议论文  OAI收割 2012 2nd International Conference on Materials Science and Information Technology, MSIT 2012, August 24, 2012 - August 26, 2012, Xi'an, Shaan, China 作者:  Zhang P. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 A method to find the optimized parameter values of passive dynamic walking biped is presented. The effects of biped physical parameters on the stability property of passive gaits are studied by simulation experiments. The chosen parameters include the mass distribution  length of leg and slope angle. The stability property of passive walking limit cycles is used as criterion of optimization calculation  including the orbital stability described by eigen-values of linearized Poincare map and the global property described by size of attraction region. The simulation results show how the stability of limit cycle varies when physical parameters of the passive biped change. The work is useful to explore the inherent property of passive dynamic walking and can be used as an important instruction in the mechanical design of biped robots based on principle of passive dynamic walking. (2012) Trans Tech Publications  Switzerland.   Tracking error estimate for theodolite based on general regression neural network (EI CONFERENCE) 会议论文  OAI收割 3rd international Conference on Manufacturing Science and Engineering, ICMSE 2012, March 27, 2012 - March 29, 2012, Xiamen, China 作者:  Li M. 收藏  |  浏览/下载：33/0  |  提交时间：2013/03/25 To efficiently evaluate the tracking index of theodolite  as well as avoiding influence resulted from higher harmonics when used opto dynamic target and use equivalent sine to evaluate the tracking index  in this paper  we resorted to General Regression Neural Network to do the new research on theodolite tracking accuracy evaluation method. Experimental results indicate that the method realized the equivalent sine to evaluate the tracking index of theodolite and avoided the higher harmonics influence with opto dynamic target. The research in this paper has important value to the engineering practice. (2012) Trans Tech Publications.